CN107063948B - Full-automatic pulverized coal sampling analyzer - Google Patents
Full-automatic pulverized coal sampling analyzer Download PDFInfo
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- CN107063948B CN107063948B CN201710528304.9A CN201710528304A CN107063948B CN 107063948 B CN107063948 B CN 107063948B CN 201710528304 A CN201710528304 A CN 201710528304A CN 107063948 B CN107063948 B CN 107063948B
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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
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- 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
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- 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
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- 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
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- 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
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- 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
The invention discloses a full-automatic pulverized coal sampling analyzer which comprises a bracket, a sampler, an analysis system, a control unit and a weighing device, and is characterized in that the sampler and the analysis system are sequentially fixed on the bracket from top to bottom, an output port of the sampler is communicated with an input port of the analysis system, the sampler is used for extracting pulverized coal samples and inputting the pulverized coal samples into the analysis system, the analysis system classifies the pulverized coal samples according to different particle sizes, the weighing device weighs the pulverized coal samples with different particle sizes, and the control unit is used for controlling the operation of the sampler, the analysis system and the weighing device. The full-automatic pulverized coal sampling analyzer improves the accuracy of analysis results, reduces the labor intensity of operators, has no adverse effect on the health and environment of the operators, has fixed test time, and improves the working efficiency.
Description
Technical Field
The invention relates to the technical field of coal dust sampling and coal dust fineness measurement, in particular to a full-automatic coal dust sampling analyzer.
Background
The boiler generally adopts pulverized coal suspension mode combustion, and pulverized coal fineness is an important parameter for boiler combustion adjustment, and directly influences the safety and economy of boiler operation. The finer the pulverized coal, the higher the burnout, the smaller the mechanical and chemical incomplete combustion losses, the lower the residual carbon content of the fly ash, and the reduction of boiler slagging (commonly known as coking) is facilitated. However, the finer the pulverized coal, the higher the power consumption of the pulverizing system, and the running cost increases significantly. Therefore, when the boiler is operated, the fineness of the pulverized coal needs to be accurately and timely measured and controlled according to the change of the combustion coal quality of the boiler so as to maintain the fineness of the pulverized coal within a certain range, so that the boiler is operated in an optimal state, and meanwhile, the cost of the pulverized coal is controlled.
The coal powder fineness is measured by adopting a fuel test method of an electric power industry standard DL/T567.5-95 thermal power plant, namely weighing a certain mass of coal powder, placing the coal powder into a specified test sieve, and calculating the coal powder fineness according to the mass of residual coal powder on the test sieve after the coal powder fineness is completely sieved. The coal dust sample is extracted from the primary air pipe by a sampling device, but the subsequent analysis is completed manually, such as screening, weighing and the like. The screening mainly has manual screening and vibration screening, and manual screening intensity of labour is great, and screening time is longer, all has adverse effect to operating personnel's health and environment, is difficult to guarantee the uniformity of screening time and screening dynamics moreover. Although the vibration screening reduces the labor intensity of operators, the screening time and the screening force can be basically ensured, the operators still need to manually place the pulverized coal samples on the screening machine, and after the vibration screening is finished, the weighing is carried out again, namely, each step needs the assistance of the operators, so that the analysis time is difficult to ensure, and the health and the environment of the operators are still adversely affected. In addition, because the pulverized coal particles are smaller, the weight is lighter, the pulverized coal particles are easy to drift in the manual screening and vibration screening processes, so that the collection and weighing are difficult, the weighing result is influenced, and finally the measurement accuracy of the pulverized coal fineness is reduced.
Disclosure of Invention
The invention aims to provide a full-automatic pulverized coal sampling analyzer which is used for solving the problems that the measurement accuracy is poor, the analysis time is difficult to ensure and adverse effects on the health of operators and the surrounding environment exist in the existing pulverized coal fineness analysis.
In order to achieve the above purpose, the full-automatic pulverized coal sampling analyzer provided by the invention comprises a bracket, a sampler, an analysis system, a weighing device and a control unit, wherein the sampler and the analysis system are sequentially fixed on the bracket from top to bottom, an output port of the sampler is communicated with an input port of the analysis system, the sampler is used for extracting pulverized coal samples and inputting the pulverized coal samples into the analysis system, the analysis system classifies the pulverized coal samples according to different particle sizes, the weighing device weighs the pulverized coal samples with different particle sizes, and the control unit is used for controlling the operation of the sampler, the analysis system and the weighing device.
The sampler comprises a rotary sampling gun, a cyclone separator, a middle storage tank and a storage tank valve, wherein an output port of the cyclone separator is communicated with an input port of the middle storage tank, an output port of the middle storage tank is communicated with an input port of an analysis system, the storage tank valve is arranged between an output port of the middle storage tank and the input port of the analysis system, the cyclone separator is used for extracting a coal dust sample, the middle storage tank is used for storing the coal dust sample extracted by the cyclone separator, and the storage tank valve is used for cutting off or communicating the middle storage tank with the analysis system.
The analysis system comprises a shell, a first screen, a second screen, a driving motor, a horizontal rotating shaft, a vertical vibrating electromagnet, a horizontal vibrating shaft and a horizontal vibrating electromagnet, wherein the horizontal rotating shaft, the first screen and the second screen are arranged in the shell, the first screen and the second screen are nested and fixed inside and outside the horizontal rotating shaft by taking the horizontal rotating shaft as shafts, a driving shaft of the driving motor is connected with the horizontal rotating shaft, the horizontal rotating shaft drives the first screen and the second screen to rotate by the horizontal rotating shaft under the driving of the driving motor, the vertical vibrating shaft and the horizontal vibrating shaft are fixed outside the shell and are mutually perpendicular, the vertical vibrating electromagnet is fixed on the support and is positioned above the shell, and the vertical vibrating electromagnet is attracted or separated from the vertical vibrating shaft, so that vibrating force in the vertical direction is provided for the shell, the first screen and the second screen; the horizontal vibration electromagnet is fixed on the bracket and positioned on the side surface of the shell, and the horizontal vibration electromagnet is attracted to or separated from the horizontal vibration shaft, so that horizontal vibration force is provided for the shell, the first screen and the second screen.
Wherein the mesh number of the first screen is 60-80 meshes, and the mesh number of the second screen is 150-200 meshes.
The weighing device comprises a first weighing device, a second weighing device and a third weighing device, wherein the first weighing device is arranged at the bottom of the first screen and is used for weighing the pulverized coal sample trapped on the first screen; the second weighing device is arranged at the bottom of the second screen and is used for weighing the pulverized coal sample trapped on the second screen; the third weighing device is arranged at the bottom of the analysis system and is used for weighing the pulverized coal sample with the smallest particle size passing through the first screen and the second screen.
The third weighing device comprises a weighing tank and a weighing sensor, the weighing tank is arranged at the bottom of the analysis system, an input port of the weighing tank is communicated with an output port of the analysis system, the pulverized coal sample with the smallest particle size obtained by the analysis system sequentially passes through the output port of the analysis system and the input port of the weighing tank and enters the weighing tank, and the weighing sensor is arranged at the bottom of the weighing tank and is used for weighing the pulverized coal sample with the smallest particle size.
Preferably, the full-automatic pulverized coal sampling analyzer further comprises an air feeder, wherein a feeding pipe of the air feeder is communicated with the discharge port of the weighing tank, and the pulverized coal sample is fed into the designated position through air flow in the air feeder.
Preferably, the full-automatic pulverized coal sampling analyzer further comprises an air knife cleaning system, wherein the air knife system comprises an air compressor, an air nozzle and a connecting pipe for connecting the air compressor with the air nozzle, the air nozzle is arranged in the shell, and compressed air provided by the air compressor sweeps the inside of the shell through the air nozzle.
Preferably, the analysis system further comprises a vacuum pump, wherein an air extraction opening of the vacuum pump is communicated with the shell, and the vacuum pump is used for vacuumizing the shell.
Preferably, the full-automatic pulverized coal sampling analyzer further comprises an upper computer, and the upper computer is connected with a data transmission interface of the full-automatic pulverized coal sampling analyzer through a 485 interface so as to obtain test data of the full-automatic pulverized coal sampling analyzer.
The invention has the following advantages:
according to the full-automatic pulverized coal sampling analyzer provided by the invention, the sampler is directly connected with the analysis system, the pulverized coal sample can be added into the analysis system without manual operation of an operator, and the analysis process is automatically completed by the analysis system, so that the accuracy of an analysis result is remarkably improved, the labor intensity is greatly reduced, the health and the environment of the operator are not adversely affected, the analysis time is fixed, and the improvement of the analysis work efficiency is facilitated.
As a preferred embodiment of the invention, since the screening process is carried out in a closed shell, the pulverized coal sample is not lost, and the weighing result is accurate, thereby improving the measurement accuracy of the pulverized coal fineness.
Drawings
Fig. 1 is a schematic structural diagram of a full-automatic pulverized coal sampling analyzer according to an embodiment of the present invention.
Fig. 2 is a flowchart of the operation of the full-automatic pulverized coal sampling analyzer according to the embodiment of the invention.
Detailed Description
The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1, the full-automatic pulverized coal sampling analyzer comprises a bracket 11, a sampler, an analysis system 13, a control unit and a weighing device, wherein the sampler and the analysis system 13 are sequentially fixed on the bracket 11 from top to bottom. The sampler is fixed on the top of the bracket 11 and is used for extracting a coal dust sample from a coal dust pipeline, an output port of the sampler is communicated with an input port of the analysis system 13, and the coal dust sample collected by the sampler 12 enters the analysis system 13 through the input port of the analysis system 13. The analysis system 13 classifies the pulverized coal samples according to different particle sizes, the weighing device is used for weighing the pulverized coal samples with different particle sizes, and the control unit is used for controlling the operation of the sampler, the analysis system 13 and the weighing device.
The sampler of the embodiment comprises a cyclone sampler 10, a cyclone separator 12, an intermediate storage tank 15 and a storage tank valve 17, wherein the cyclone sampler 10, the cyclone separator 12 and the intermediate storage tank 15 are sequentially communicated, namely, the output port of the cyclone sampler 10 is communicated with the input port of the cyclone separator 12, the output port of the cyclone separator 12 is communicated with the input port of the intermediate storage tank 15, the output port of the intermediate storage tank 15 is communicated with the input port of the analysis system 13 through a coal dust conveying pipe 16, and the storage tank valve 17 is arranged between the output port of the intermediate storage tank 15 and the input port of the analysis system 13. The cyclone sampler 10 is used for extracting a coal dust sample from a coal dust pipeline, the coal dust sample extracted by the cyclone sampler 10 is a mixture of gas and coal dust, the cyclone separator 12 is used for separating the coal dust sample from the mixture of gas and coal dust, the middle storage tank is used for storing the coal dust sample separated by the cyclone separator 12, and the storage tank valve 17 is used for cutting off or communicating the middle storage tank 15 and the analysis system 17.
The analysis system 13 sorts the pulverized coal samples according to different particle sizes. Specifically, the analysis system 13 includes a housing 25, a first screen 18, a second screen 19, a driving motor 20, a horizontal rotation shaft (not shown in the figure), a vertical vibration shaft 21, a vertical vibration electromagnet 22, a horizontal vibration shaft 23, and a horizontal vibration electromagnet 24, wherein the horizontal rotation shaft, the first screen 18, and the second screen 19 are fixed in the housing 25, the first screen 18, and the second screen 19 are nested inside and outside the horizontal rotation shaft with the horizontal rotation shaft as axes, a driving shaft of the driving motor 20 is connected to the horizontal rotation shaft, the horizontal rotation shaft drives the first screen 18, and the second screen 19 to rotate with the horizontal rotation shaft under the driving of the driving motor 20, the vertical vibration shaft 21 and the horizontal vibration shaft 23 are fixed outside the housing 25 and are perpendicular to each other, the vertical vibration electromagnet 22 is fixed to the bracket 11 and is located above the housing 25, and the vertical vibration electromagnet 22 is attracted to or separated from the vertical vibration shaft 21, thereby providing a vibration force in a vertical direction to the housing 25, the first screen 18, and the second screen 19; the horizontal vibration electromagnet 24 is fixed to the bracket 11 and located at a side of the housing 25, and the horizontal vibration electromagnet 24 is attracted to or separated from the horizontal vibration shaft 23, thereby providing a vibration force in a horizontal direction to the housing 25, the first screen 18, and the second screen 19. It will be appreciated that the entire screening process is carried out within the housing 25 and thus does not adversely affect the health and environment of the operator.
In this example, the mesh number of the first screen is 60 to 80 mesh, which entraps the pulverized coal sample having a particle size larger than R90. The mesh number of the second screen is 150-200 meshes, and the second screen intercepts coal dust samples with the particle size larger than R200. If the first screen adopts an 80-mesh screen, the second screen adopts a 170-mesh screen.
The weighing means includes a first weighing means (not shown in the drawing), which is provided at the bottom of the first screen 18 for weighing the weight of the pulverized coal sample having a particle size greater than R90 trapped on the first screen 18, a second weighing means (not shown in the drawing), and a third weighing means 14. The second weighing device is arranged at the bottom of the second screen 19 and is used for weighing the pulverized coal sample with the particle size larger than R200 which is trapped on the second screen 19. It will be appreciated that the first screen 18 and the second screen 19 retain pulverized coal samples of different particle sizes, and that only pulverized coal samples of the smallest particle size (fine) can pass through the first screen 18 and the second screen 19 to the bottom of the analysis system 13.
The third weighing device 14 comprises a weighing tank 26 and a weighing sensor 27, the weighing tank 26 is arranged at the bottom of the analysis system 13, an input port of the weighing tank 26 is communicated with an output port of the analysis system 13, and pulverized coal samples with minimum particle sizes, which pass through the first screen 18 and the second screen 19 to reach the bottom of the analysis system 13, sequentially enter the weighing tank 26 through the output port of the analysis system 13 and the input port of the weighing tank 26. The weighing sensor 27 is arranged at the bottom of the weighing tank 26, and the weighing sensor 27 weighs the pulverized coal sample with the smallest particle size stored in the weighing tank 26. Specifically, when the pulverized coal particles are not stored in the weighing tank 26, the weighing sensor 27 obtains the weight of the weighing tank 26; when the pulverized coal particles are stored in the weighing tank 26, the weighing sensor 27 obtains the total weight of the weighing tank 26 and the pulverized coal particles, and the weight of the pulverized coal sample with the smallest particle size can be obtained by subtracting the net weight of the weighing tank 26 from the total weight.
It will be understood that the first weighing device, the second weighing device and the third weighing device 14 weigh the pulverized coal sample with the particle size larger than R90, the pulverized coal sample with the particle size between R90 and R200 and the pulverized coal sample with the particle size smaller than R200 respectively, so that the weights of the pulverized coal samples with the three particle sizes are obtained, and the precision of the first weighing device, the second weighing device and the third weighing device 14 can reach 0.01g, thereby completely meeting the standard of measuring the fineness of the pulverized coal in national standards.
In addition, the full-automatic pulverized coal sampling analyzer further comprises an air feeder 28, the air feeder 28 is arranged at the bottom of the weighing tank 26, a feeding pipe of the air feeder 28 is communicated with a discharge outlet of the weighing tank 26, and the pulverized coal sample with the particle size smaller than R200 is fed into a designated position by air flow in the air feeder 28, for example, conveyed to a pulverized coal pipeline. The pulverized coal sample having a particle diameter larger than R90 and the pulverized coal sample having a particle diameter of R90 to R200, which are trapped by the first screen 18 and the second screen 19, are discharged from the input port of the analysis system, that is, the input port of the analysis system is directed downward by the rotary housing 25, whereby the pulverized coal sample having a particle diameter larger than R90 and the pulverized coal sample having a particle diameter of R90 to R200 are discharged.
In order to smoothly discharge the pulverized coal sample with the particle size larger than R90 and the pulverized coal sample with the particle size of R90-R200, the full-automatic pulverized coal sampling analyzer is cleaned, and particularly, the inside of the shell 25 is kept clean. The full-automatic pulverized coal sampling analyzer further comprises an air knife cleaning system (not shown in the figure), the air knife cleaning system comprises an air compressor, an air nozzle and a connecting pipe for connecting the air compressor and the air nozzle, the air nozzle is arranged in the shell 25, compressed air provided by the air compressor sweeps the inside of the shell 25 through the air nozzle, and therefore pulverized coal samples with the particle size larger than R90 and pulverized coal samples with the particle size between R90 and R200 are discharged from an input port of the analysis system. The air knife cleaning system is beneficial to discharging the pulverized coal sample, cleans the inside of the shell 25, and prepares for the next analysis test so as to improve the analysis precision of the full-automatic pulverized coal sampling analyzer.
Preferably, the full-automatic pulverized coal sampling analyzer further comprises a vacuum pump (not shown in the figure), wherein an extraction opening of the vacuum pump is communicated with the shell 25, the vacuum pump is used for vacuumizing the interior of the shell 25, and the vacuum pump is matched with the air knife cleaning system to clean the first screen 18, the second screen 19 and the shell 25. Specifically, after the full-automatic pulverized coal sampling analyzer completes analysis, the air knife cleaning system sweeps the first screen 18, the second screen 19 and the shell 25, then the sweeping is stopped, the vacuum pump vacuumizes the shell 25, the air knife cleaning system sweeps the first screen 18, the second screen 19 and the shell 25 again, and after the circulation is repeated, the first screen 18, the second screen 19 and the shell 25 are cleaned.
The full-automatic pulverized coal sampling analyzer of the embodiment further comprises an upper computer, wherein the upper computer is connected with a data transmission interface of the full-automatic pulverized coal sampling analyzer through a 485 interface, and particularly, the upper computer is connected with data output interfaces of the first weighing device, the second weighing device and the third weighing device through the 485 interface so as to obtain test data of the full-automatic pulverized coal sampling analyzer. The upper computer can obtain the total weight of the coal dust sample through calculation, and can obtain the percentages of the coal dust samples with different particle sizes.
It should be noted that, the upper computer can be connected with a plurality of full-automatic pulverized coal sampling analyzers, can analyze and test a plurality of pulverized coal samples simultaneously, can complete all test processes by pressing the start key, greatly reduces the labor intensity of operators, has no adverse effect on health and environment, and meanwhile, has fixed test time, is favorable for integrally controlling the test time, thereby improving the working efficiency.
It should be noted that, in actual use, the full-automatic pulverized coal sampling analyzer may be fixed at one position, i.e. may be designed as a fixed full-automatic pulverized coal sampling analyzer, or may be designed as a movable full-automatic pulverized coal sampling analyzer by setting rollers below the support 11 as required.
Referring to fig. 1 and 2 in combination, the workflow of the fully automatic pulverized coal sampling analyzer comprises the steps of:
s1, a cyclone sampling gun collects coal dust samples from a coal dust pipeline, and the coal dust samples are stored in an intermediate storage tank after being separated.
The sampler of the embodiment collects the coal dust sample in a cyclone sampling mode, the collection mode can collect the coal dust sample continuously, the obtained coal dust sample can better reflect the characteristic of coal dust in a coal dust pipeline, the cyclone sampling robs to obtain the coal dust sample which is a mixture of gas and coal dust, the cyclone separator separates the gas to obtain the coal dust sample, and the coal dust sample is stored in the middle storage tank.
And S2, conveying the pulverized coal sample from the intermediate storage tank to an analysis system.
The storage tank valve 17 is opened, the pulverized coal sample in the intermediate storage tank 15 enters the shell 25 of the analysis system 13 by gravity, and the pulverized coal sample just entering the shell 25 is in the first screen 18.
And S3, starting a driving motor and screening the pulverized coal sample.
The driving motor 20 is started to rotate the first screen 18 and the second screen 19 while alternately and intermittently vibrating the first screen 18 and the second screen 19 in the horizontal direction or the vertical direction, the pulverized coal sample having a particle size larger than R90 is trapped in the first screen 18, the pulverized coal sample having a particle size between R90 and R200 is trapped in the second screen 19, and only the pulverized coal sample having a particle size smaller than R200 can be screened to the bottom of the housing 25 through the first screen 18 and the second screen 19 and enter the weighing pot 26.
And S4, respectively weighing the pulverized coal samples with different particle sizes.
The first weighing device, the second weighing device and the third weighing device 14 respectively weigh the pulverized coal sample with the particle size larger than R90, the pulverized coal sample with the particle size between R90 and R200 and the pulverized coal sample with the particle size smaller than R200 to obtain the weight of the pulverized coal samples with different particle sizes, and the accuracy can reach 0.1g.
And S5, calculating the percentages of coal dust samples with different particle sizes.
The first weighing device, the second weighing device and the third weighing device 14 send measured data to an upper computer through a 485 interface, and the upper computer obtains the total weight of the coal dust samples and the percentages occupied by different coal dust samples through calculation.
And S6, conveying the pulverized coal sample back to the pulverized coal pipeline.
After the pulverized coal samples are tested, all the pulverized coal samples are returned to the designated positions, such as pulverized coal pipelines, through the air feeder.
Step S7, cleaning the analysis system.
The air knife cleaning system and the vacuum pump are started to clean the analysis system, so that the inside of the shell 25, the first screen 18 and the second screen 19 are kept clean, and preparation is made for the next test.
The full-automatic pulverized coal sampling analyzer provided by the embodiment is characterized in that the sampler is directly connected with the analysis system, an operator is not required to manually operate the sampler, a pulverized coal sample can be added into the analysis system, the analysis process is automatically completed by the analysis system, the accuracy of an analysis result is improved, the labor intensity is greatly reduced, the health and the environment of the operator are not adversely affected, meanwhile, the test time is fixed, the whole control of the test time is facilitated, and therefore the work efficiency is improved.
While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (8)
1. The full-automatic pulverized coal sampling analyzer comprises a bracket, a sampler, an analysis system, a weighing device and a control unit, and is characterized in that the sampler and the analysis system are sequentially fixed on the bracket from top to bottom, an output port of the sampler is communicated with an input port of the analysis system, the sampler is used for extracting pulverized coal samples and inputting the pulverized coal samples into the analysis system, the analysis system classifies the pulverized coal samples according to different particle sizes, the weighing device weighs the pulverized coal samples with different particle sizes, and the control unit is used for controlling the operation of the sampler, the analysis system and the weighing device;
the sampler comprises a rotary sampling gun, a cyclone separator, an intermediate storage tank and a storage tank valve, wherein the output port of the cyclone separator is communicated with the input port of the intermediate storage tank, the output port of the intermediate storage tank is communicated with the input port of the analysis system, the storage tank valve is arranged between the output port of the intermediate storage tank and the input port of the analysis system, the cyclone separator is used for extracting the coal dust sample, the intermediate storage tank is used for storing the coal dust sample extracted by the cyclone separator, and the storage tank valve is used for cutting off or communicating the intermediate storage tank with the analysis system;
the analysis system comprises a shell, a first screen, a second screen, a driving motor, a horizontal rotating shaft, a vertical vibrating electromagnet, a horizontal vibrating shaft and a horizontal vibrating electromagnet, wherein the horizontal rotating shaft, the first screen and the second screen are arranged in the shell, the first screen and the second screen are nested and fixed inside and outside the horizontal rotating shaft by taking the horizontal rotating shaft as shafts, a driving shaft of the driving motor is connected with the horizontal rotating shaft, the horizontal rotating shaft drives the first screen and the second screen to rotate by the horizontal rotating shaft under the driving of the driving motor, the vertical vibrating shaft and the horizontal vibrating shaft are fixed outside the shell and are mutually vertical, the vertical vibrating electromagnet is fixed on the support and is positioned above the shell, and the vertical vibrating electromagnet is attracted to or separated from the vertical vibrating shaft, so that vibrating force in the vertical direction is provided for the shell, the first screen and the second screen; the horizontal vibration electromagnet is fixed on the bracket and positioned on the side surface of the shell, and the horizontal vibration electromagnet is attracted to or separated from the horizontal vibration shaft, so that horizontal vibration force is provided for the shell, the first screen and the second screen.
2. The fully automatic pulverized coal sampling analyzer according to claim 1, wherein the mesh number of the first screen is 60 to 80 mesh and the mesh number of the second screen is 150 to 200 mesh.
3. The fully automatic pulverized coal sampling analyzer as set forth in claim 1, wherein the weighing device includes a first weighing device, a second weighing device and a third weighing device, the first weighing device being disposed at a bottom of the first screen for weighing the pulverized coal sample trapped on the first screen; the second weighing device is arranged at the bottom of the second screen and is used for weighing the pulverized coal sample trapped on the second screen; the third weighing device is arranged at the bottom of the analysis system and is used for weighing the pulverized coal sample with the smallest particle size passing through the first screen and the second screen.
4. The full-automatic pulverized coal sampling analyzer as set forth in claim 3, wherein the third weighing device includes a weighing tank and a weighing sensor, the weighing tank is disposed at the bottom of the analyzing system, an input port of the weighing tank is communicated with an output port of the analyzing system, the pulverized coal sample with the smallest particle size obtained by the analyzing system sequentially enters the weighing tank through the output port of the analyzing system and the input port of the weighing tank, and the weighing sensor is disposed at the bottom of the weighing tank for weighing the pulverized coal sample with the smallest particle size.
5. The fully automatic pulverized coal sampling analyzer as set forth in claim 4, further including an air feeder, a feed pipe of the air feeder being in communication with the discharge port of the weighing tank, the pulverized coal sample being fed to a designated location by an air flow in the air feeder.
6. The fully automatic pulverized coal sampling analyzer as set forth in claim 5, further including an air knife cleaning system including an air compressor, an air nozzle and a connecting tube connecting the air compressor and the air nozzle, the air nozzle being disposed in the housing, compressed air provided by the air compressor being purged inside the housing through the air nozzle.
7. The fully automatic pulverized coal sampling analyzer as set forth in claim 6, further including a vacuum pump, an extraction port of the vacuum pump being in communication with the housing, the vacuum pump being configured to evacuate the housing.
8. The full-automatic pulverized coal sampling analyzer as set forth in claim 1, further including an upper computer connected to a data transmission interface of the full-automatic pulverized coal sampling analyzer through a 485 interface to obtain test data of the full-automatic pulverized coal sampling analyzer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710528304.9A CN107063948B (en) | 2017-07-01 | 2017-07-01 | Full-automatic pulverized coal sampling analyzer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710528304.9A CN107063948B (en) | 2017-07-01 | 2017-07-01 | Full-automatic pulverized coal sampling analyzer |
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| CN110018031B (en) * | 2019-05-09 | 2023-09-08 | 深圳国技仪器有限公司 | Sample recombination system and method suitable for grape/Fan Shi tester |
| 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 |
| CN110749522B (en) * | 2019-11-13 | 2020-09-22 | 扎鲁特旗扎哈淖尔煤业有限公司 | 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 |
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| CN1049732C (en) * | 1996-01-03 | 2000-02-23 | 山东省电力学校 | Fast automatic duff fineness detector |
| JP2002131118A (en) * | 2000-10-27 | 2002-05-09 | Rigaku Industrial Co | Weighing instrument for fine powder sample, its applied analytical sampling device and fluorescent x-ray analyzer equipped with above-stated devices |
| CN2837815Y (en) * | 2005-11-25 | 2006-11-15 | 刘福民 | The full section isokinetic sample of pulverized coal of a kind of pulverized coal channel device |
| CN201974321U (en) * | 2011-01-23 | 2011-09-14 | 西安英格智能科技有限公司 | Full-automatic pulverized coal sampling system |
| CN102445408A (en) * | 2011-09-29 | 2012-05-09 | 中铁第五勘察设计院集团有限公司 | Automatic detector for size grading of filler |
| CN202748246U (en) * | 2012-09-17 | 2013-02-20 | 南京奥能科技有限公司 | Novel rotary full-automatic pulverized coal sampling device |
| CN204514655U (en) * | 2015-03-10 | 2015-07-29 | 石福军 | A kind of closed coal dust sampling system |
| CN205209926U (en) * | 2015-12-17 | 2016-05-04 | 广州敏远能源科技有限公司 | Boiler pulverized coal sample fineness on - line measuring device |
| CN205808764U (en) * | 2016-06-01 | 2016-12-14 | 连云港久盛电力辅机有限公司 | A kind of Full automatic closed coal fines sampling apparatus |
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