CN109696524B - Coal mill outlet O for explosion prevention 2 Online monitoring device and use method - Google Patents
Coal mill outlet O for explosion prevention 2 Online monitoring device and use method Download PDFInfo
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- CN109696524B CN109696524B CN201910034503.3A CN201910034503A CN109696524B CN 109696524 B CN109696524 B CN 109696524B CN 201910034503 A CN201910034503 A CN 201910034503A CN 109696524 B CN109696524 B CN 109696524B
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- 239000003245 coal Substances 0.000 title claims abstract description 78
- 238000004880 explosion Methods 0.000 title claims abstract description 14
- 238000012806 monitoring device Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims description 10
- 230000002265 prevention Effects 0.000 title claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 85
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 85
- 239000001301 oxygen Substances 0.000 claims abstract description 85
- 239000000843 powder Substances 0.000 claims abstract description 25
- 239000002817 coal dust Substances 0.000 claims abstract description 17
- 230000035939 shock Effects 0.000 claims abstract description 5
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 230000001680 brushing effect Effects 0.000 abstract 1
- 230000003139 buffering effect Effects 0.000 description 4
- 238000013016 damping Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0029—Cleaning of the detector
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Crushing And Grinding (AREA)
- Disintegrating Or Milling (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to a coal mill outlet O for explosion protection 2 The on-line monitoring device comprises a coal mill body, a pipeline and an oxygen analyzer, wherein a coal powder outlet is formed in the side of the coal mill body, a convex block is fixed on the outer wall of a rotating shaft, a hairbrush is arranged at the top of a first transverse plate, the end part of a second transverse plate is fixed on the side of a vertical plate, the lower end of the pipeline is positioned in the coal powder outlet, a bearing plate is positioned above the coal powder outlet, the oxygen analyzer is positioned between first buffer cushions, a first screw rod is arranged at the top of a clamping arm, the bottom of the clamping arm is fixed with the upper end of a loop bar, the lower end of the loop bar is connected with a second elastic element, and the second elastic element is positioned in a first sleeve and a second sleeve. The invention can fix the oxygen analyzer, and can absorb shock and buffer the oxygen analyzer, thereby avoiding the damage of internal parts of the oxygen analyzer, avoiding the coal dust entering the oxygen analyzer, and brushing the coal dust attached on the filter screen.
Description
Technical Field
The invention relates to the technical field of coal mills in power stations, in particular to a coal mill outlet O for explosion prevention 2 An on-line monitoring device and a use method thereof.
Background
The coal pulverizer is needed to be used in the power station power generation process for the coal cinder becomes smashing the form, thereby has guaranteed that the coal enters into in the boiler, can abundant burning, and the buggy in the coal pulverizer needs to enter into the inside of boiler through the buggy export, and needs to install the oxygen analysis appearance at the buggy export, thereby can carry out on-line measuring to oxygen, thereby avoided the inside oxygen content of coal pulverizer too high to lead to the phenomenon of coal pulverizer to blow, like the chinese patent of application number 96120951.8.
However, the existing oxygen analyzer is inconvenient to install on the coal mill, and the coal mill vibrates during operation, so that the oxygen analyzer is easy to damage, and meanwhile, pulverized coal easily enters the interior of the oxygen analyzer, so that the oxygen analyzer is easy to damage. Aiming at the problems, innovative design is urgently needed on the basis of an oxygen analyzer on an original coal mill.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a coal mill outlet O for explosion protection 2 The on-line monitoring device and the use method thereof are used for solving the problems that the prior oxygen analyzer is inconvenient to install on a coal mill in the prior art, the coal mill vibrates during working, so that the oxygen analyzer is easy to damage, and meanwhile, pulverized coal easily enters the inside of the oxygen analyzer, so that the oxygen analyzer is easy to damage.
The invention solves the problems by adopting the following technical scheme: coal mill outlet O for explosion prevention 2 On-line monitoring device, including coal pulverizer body, pipeline and oxygen analyzer, its characterized in that: the side of the coal mill body is provided with a coal powder outlet, the top of the inner wall of the coal powder outlet is connected with the upper end of a rotating shaft, the lower end of the rotating shaft is positioned below the coal powder outlet, a lug is fixed on the rotating shaft and positioned in the coal powder outlet, the lug is positioned at one end of a first transverse plate, the top of the first transverse plate is provided with a brush, the other end of the first transverse plate is connected with a first elastic element, the first elastic element is arranged in a second transverse plate, the end part of the second transverse plate is fixed on the side of a vertical plate, and the top of the vertical plate is fixed with the top of the inner wall of the coal powder outlet; the lower end of the pipeline is positioned in the coal dust outlet, the bottom of the pipeline is provided with a filter screen, a bearing plate is arranged above the coal dust outlet, the pipeline penetrates through the bearing plate, the oxygen analyzer is positioned above the bearing plate, and the upper end of the pipeline is connected with the oxygen analyzer; the oxygen analyzer is in contact with the first buffer pad, the first buffer pad is laid on the inner side of the clamping arm, the first screw rod is installed at the top of the clamping arm, the second buffer pad is laid at the bottom of the first screw rod and located above the oxygen analyzer, the bottom of the clamping arm is fixed with the upper end of the loop bar, the lower end of the loop bar is connected with the second elastic element, and the second elastic element is located on the first sleeveAnd the lower end of the first sleeve is fixed with the top surface of the bearing plate, the top of the bearing plate is provided with a sliding groove, the lower end of the second sleeve is positioned in the sliding groove, the inside of the second sleeve is provided with a limiting groove, one end of the second screw rod is arranged in the limiting groove, and the other end of the second screw rod is positioned on the outer side of the bearing plate.
Preferably, the first transverse plate is designed to be of a T-shaped structure, the first transverse plate and the second transverse plate form a telescopic structure through the first elastic element, and the protruding blocks at the side of the first transverse plate are designed to be of a drop-shaped structure.
Preferably, the brushes are uniformly distributed on the top of the first transverse plate, the width of the first transverse plate is larger than the diameter of the filter screen, and the highest position of the brushes is higher than the highest position of the filter screen.
Preferably, the first buffer pad is designed to be in an L-shaped structure, the first buffer pad is in adhesive connection with the inner wall of the clamping arm, the clamping arm is designed to be in a U-shaped structure, and the first screw rod is in threaded connection with the clamping arm.
Preferably, the loop bar is designed into a T-shaped structure, and the loop bar and the first sleeve form a telescopic structure through the second elastic element.
Preferably, the second screw rod is designed to be of an I-shaped structure, one end of the second screw rod and the limiting groove form a rotating structure, and the second screw rod is in threaded connection with the bearing plate.
Coal mill outlet O for explosion protection 2 The using method of the on-line monitoring device is as follows: the coal mill body vibrates when crushing coal blocks and drives the oxygen analyzer to vibrate together, and at the moment, the first buffer cushion, the second buffer cushion and the first sleeve absorb shock and buffer the oxygen analyzer, so that damage to internal parts of the oxygen analyzer is avoided; when the oxygen analyzer is maintained, the first screw rod is rotated firstly, and the first screw rod is in threaded connection with the top of the clamping arm, so that the first screw rod drives the second buffer pad to move upwards, and the oxygen analyzer is separated from the second buffer pad; then the other end of the second screw rod is rotated, one end of the second screw rod rotates in the limiting groove,because the second screw rod is in threaded connection with the bearing plate, the second screw rod pulls the second sleeve to move in the direction of the second screw rod in the sliding groove, so that the second sleeve pulls the clamping arm away from the oxygen analyzer through the loop bar, the distance between the clamping arm and the oxygen analyzer is increased, the oxygen analyzer is taken down from the inner side of the clamping arm, and then the oxygen analyzer is maintained;
when more coal dust is attached to the filter screen, the coal dust on the filter screen needs to be removed to ensure that air enters the oxygen analyzer through the pipeline; at the moment, the rotating shaft is rotated, the rotating shaft drives the convex blocks to rotate, and the convex parts of the convex blocks are contacted with the first transverse plates, so that the convex blocks push the first transverse plates to move towards the inside of the second transverse plates, the first elastic elements are compressed, meanwhile, the first transverse plates drive the hairbrushes at the tops of the first elastic elements to move towards the direction of the filter screen, and the hairbrushes brush the pulverized coal on the filter screen, so that the mesh holes on the filter screen are prevented from being blocked; and then the rotating shaft is loosened, and the elastic force generated by the first elastic element pushes the first transverse plate to move back, so that the first transverse plate is restored to the initial state, and the next use is facilitated.
Compared with the prior art, the invention has the following advantages and effects: the outlet O of the coal mill for explosion prevention 2 The on-line monitoring device can fix the oxygen analyzer, and can absorb shock and buffer the oxygen analyzer, so that the damage of internal parts of the oxygen analyzer can be avoided, meanwhile, the coal dust can be prevented from entering the oxygen analyzer, and the coal dust attached to the filter screen can be brushed off;
the first lead screw can fix the vertical direction of the oxygen analyzer, and the first buffer pad and the second buffer pad can play a role in damping the oxygen analyzer, so that the damage of internal parts of the oxygen analyzer can be effectively avoided, meanwhile, the second lead screw can fix the horizontal direction of the oxygen analyzer, and therefore the falling of the oxygen analyzer is avoided, and meanwhile, the second elastic element can play a role in further damping and buffering the oxygen analyzer;
the bottom of pipeline is provided with the filter screen to guaranteed that only oxygen can enter into the inside of oxygen analyzer through the pipeline, and the buggy can not, avoided the buggy to enter into the inside of oxygen analyzer, and then avoided the damage of oxygen analyzer, simultaneously under pivot, lug, first diaphragm, brush, second diaphragm and first elastic element's mutually supporting, can brush the buggy of attaching on the filter screen, avoided the mesh on the filter screen to be blocked up.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of the present invention.
Fig. 2 is an enlarged schematic view of the structure a in fig. 1 according to an embodiment of the present invention.
Fig. 3 is an enlarged view of the structure of fig. 1 at B in the embodiment of the present invention.
Fig. 4 is a schematic view of a first cross plate mounting structure in an embodiment of the present invention.
In the figure: 1. a coal mill body; 2. a coal dust outlet; 3. a rotating shaft; 4. a bump; 5. a first cross plate; 6. a brush; 7. a second cross plate; 8. a first elastic element; 9. a riser; 10. a pipe; 11. a filter screen; 12. a bearing plate; 13. an oxygen analyzer; 14. a first cushion pad; 15. a clamp arm; 16. a first screw rod; 17. a second cushion pad; 18. a loop bar; 19. a second elastic element; 20. a first sleeve; 21. a second sleeve; 22. a chute; 23. a limit groove; 24. and a second screw rod.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and not limited to the following examples.
Examples.
Referring to FIGS. 1-4, the coal pulverizer outlet O for explosion protection in this embodiment 2 The on-line monitoring device comprises a coal mill body 1, a coal powder outlet 2, a rotating shaft 3, a protruding block 4, a first transverse plate 5, a hairbrush 6, a second transverse plate 7, a first elastic element 8, a vertical plate 9, a pipeline 10, a filter screen 11, a bearing plate 12, an oxygen analyzer 13, a first buffer pad 14, a clamping arm 15, a first screw rod 16, a second buffer pad 17, a sleeve rod 18, a second elastic element 19, a first sleeve 20, a second sleeve 21, a chute 22 and a limitA groove 23 and a second screw 24.
The side of the coal mill body 1 is provided with a coal powder outlet 2, the upper end of a rotating shaft 3 is arranged on the inner wall of the top of the coal powder outlet 2, the lower end of the rotating shaft 3 is positioned below the coal powder outlet 2, a lug 4 is fixed on the outer wall of the rotating shaft 3, the lug 4 is positioned inside the coal powder outlet 2, the lug 4 is positioned at one end of a first transverse plate 5, the top of the first transverse plate 5 is provided with a hairbrush 6, the other end of the first transverse plate 5 is connected with a first elastic element 8, the first elastic element 8 is positioned inside a second transverse plate 7, the end of the second transverse plate 7 is fixed on the side of a vertical plate 9, the top of the vertical plate 9 is arranged on the inner wall of the top of the coal powder outlet 2, the lower end of a pipeline 10 is positioned inside the coal powder outlet 2, a filter screen 11 is arranged at the bottom of the pipeline 10, the pipeline 10 penetrates through the inside of a bearing plate 12 to be connected with an oxygen analyzer 13, the bearing plate 12 is positioned above the coal powder outlet 2, the coal dust outlet 2 is fixed on the outer wall of the coal mill body 1, the oxygen analyzer 13 is positioned above the bearing plate 12, the oxygen analyzer 13 is contacted with the first buffer pad 14, the first buffer pad 14 is laid on the inner side of the clamping arm 15, the first screw rod 16 is arranged at the top of the clamping arm 15, the second buffer pad 17 is laid on the bottom of the first screw rod 16, the second buffer pad 17 is positioned above the oxygen analyzer 13, the upper end of the sleeve rod 18 is fixed on the bottom of the clamping arm 15, the lower end of the sleeve rod 18 is connected with the second elastic element 19, the second elastic element 19 is arranged in the first sleeve 20 and the second sleeve 21, the lower end of the first sleeve 20 is fixed on the upper end surface of the bearing plate 12, the sliding groove 22 is arranged at the top of the bearing plate 12, the lower end of the second sleeve 21 is positioned in the sliding groove 22, the limiting groove 23 is reserved in the second sleeve 21, and one end of the second screw 24 is installed inside the limit groove 23, and the other end of the second screw 24 is located outside the bearing plate 12.
The first diaphragm 5 is designed to be "T" style of calligraphy structure, and first diaphragm 5 constitutes telescopic structure through first elastic element 8 and second diaphragm 7, and the lug 4 of first diaphragm 5 avris designs to drop shape structure, brush 6 is at first diaphragm 5 up end evenly distributed, and the width of first diaphragm 5 is greater than the diameter of filter screen 11, and the highest department of brush 6 is higher than the highest department of filter screen 11, when having guaranteed to rotate pivot 3, pivot 3 can drive lug 4 and rotate, and when the protruding end of lug 4 contacts with first diaphragm 5, lug 4 can promote first diaphragm 5 and remove to the inside of second diaphragm 7, make first elastic element 8 compressed, brush 6 on the first diaphragm 5 can brush the buggy on the filter screen 11 simultaneously, thereby avoided the buggy to block up the mesh on the filter screen 11.
The first blotter 14 designs to "L" style of calligraphy structure, and the inner wall of first blotter 14 and arm lock 15 is pasted and is connected, and arm lock 15 designs to "U" style of calligraphy structure, first lead screw 16 is threaded connection with arm lock 15 simultaneously, when having guaranteed rotatory first lead screw 16, first lead screw 16 can the downstream to can drive the top mutual contact of second blotter 17 and oxygen analyzer 13, and then avoided the removal of oxygen analyzer 13 vertical direction, first blotter 14 and second blotter 17 can play shock attenuation buffering protection's effect to oxygen analyzer 13 simultaneously.
The loop bar 18 is designed into a T-shaped structure, and the loop bar 18 and the first sleeve 20 form a telescopic structure through the second elastic element 19, so that the second elastic element 19 can play a role in buffering and damping when the oxygen analyzer 13 vibrates, and damage to internal parts of the oxygen analyzer 13 caused by vibration is avoided.
The second lead screw 24 is designed into an I-shaped structure, one end of the second lead screw 24 and the limiting groove 23 form a rotating structure, and the second lead screw 24 is in threaded connection with the bearing plate 12, so that when the second lead screw 24 is rotated, the second lead screw 24 can push the second sleeve 21 to move towards the middle of the bearing plate 12, and the horizontal direction of the oxygen analyzer 13 can be fixed.
Working principle: when the online monitoring device for the explosion-proof coal mill outlet O2 is used, according to FIG. 1, firstly, coal blocks are crushed in the coal mill body 1, coal in a powder state enters the coal powder outlet 2 along with flowing air, then enters the boiler through the coal powder outlet 2 for combustion, and air in the coal powder outlet 2 enters the oxygen analyzer 13 with the model KY-2B through the pipeline 10, and at the moment, the oxygen analyzer 13 can detect the concentration in the air, so that the phenomenon of explosion caused by overhigh oxygen content in the coal mill body 1 is avoided, and the technology of the coal power generation part of the existing power station coal is adopted.
According to fig. 1-2, the coal pulverizer body 1 vibrates when pulverizing coal, and drives the oxygen analyzer 13 to vibrate together, at this moment, the first buffer pad 14, the second buffer pad 17 and the first sleeve 20 can play a role in damping and buffering the oxygen analyzer 13, thereby avoiding damage to internal parts of the oxygen analyzer 13, when the oxygen analyzer 13 needs to be taken down for maintenance, the first screw 16 is rotated first, because the first screw 16 is in threaded connection with the top of the clamping arm 15, the first screw 16 drives the second buffer pad 17 to move upwards, thereby separating the oxygen analyzer 13 from the second buffer pad 17, then rotating the other end of the second screw 24, then rotating one end of the second screw 24 in the limiting groove 23, and because the second screw 24 is in threaded connection with the bearing plate 12, the second screw 24 pulls the second sleeve 21 to move rightward in the interior of the chute 22, thereby pulling the clamping arm 15 through the sleeve 18 to move rightward, thereby increasing the distance between the clamping arms 15, and further removing the oxygen analyzer 13 from between the clamping arms 15, and then taking down the oxygen analyzer 13 for maintenance.
According to fig. 1 and fig. 3-4, when more coal dust is attached to the filter screen 11, the coal dust on the filter screen 11 needs to be removed at this time, so that air can be guaranteed to enter the oxygen analyzer 13 through the pipeline 10, the rotating shaft 3 can be rotated at this time, then the rotating shaft 3 drives the protruding block 4 to rotate, then the protruding part of the protruding block 4 contacts with the first transverse plate 5, so that the protruding block 4 pushes the first transverse plate 5 to move towards the inside of the second transverse plate 7, meanwhile, the first elastic element 8 is compressed, the first transverse plate 5 drives the brush 6 on the first transverse plate 5 to move towards the right side, at this time, the coal dust on the filter screen 11 can be brushed off by the brush 6, thereby avoiding the blocking of the mesh on the filter screen 11, and then the rotating shaft 3 is loosened, at this time, the elastic force generated by the first elastic element 8 pushes the first transverse plate 5 to move towards the left side, so that the first transverse plate 5 is restored to the original state, and the next use is facilitated.
Although the present invention is described with reference to the above embodiments, it should be understood that the invention is not limited to the embodiments described above, but is capable of modification and variation without departing from the spirit and scope of the present invention.
Claims (3)
1. Coal mill outlet O for explosion prevention 2 Use method of on-line monitoring device, namely coal mill outlet O for explosion prevention 2 The on-line monitoring device comprises a coal mill body (1), a pipeline (10) and an oxygen analyzer (13), and is characterized in that: the coal pulverizer comprises a coal pulverizer body (1), wherein a coal powder outlet (2) is formed in the side of the coal pulverizer body (1), the top of the inner wall of the coal powder outlet (2) is connected with the upper end of a rotating shaft (3), the lower end of the rotating shaft (3) is located below the coal powder outlet (2), a lug (4) is fixed on the rotating shaft (3), the lug (4) is located in the coal powder outlet (2), the lug (4) is located at one end of a first transverse plate (5), a hairbrush (6) is arranged at the top of the first transverse plate (5), the other end of the first transverse plate (5) is connected with a first elastic element (8), the first elastic element (8) is arranged in a second transverse plate (7), the end of the second transverse plate (7) is fixed on the side of a vertical plate (9), and the top of the vertical plate (9) is fixed with the top of the inner wall of the coal powder outlet (2); the lower end of the pipeline (10) is positioned in the coal dust outlet (2), a filter screen (11) is arranged at the bottom of the pipeline (10), a bearing plate (12) is arranged above the coal dust outlet (2), the pipeline (10) penetrates through the bearing plate (12), the oxygen analyzer (13) is positioned above the bearing plate (12), and the upper end of the pipeline (10) is connected with the oxygen analyzer (13); the oxygen analyzer (13) is contacted with the first buffer pad (14), the first buffer pad (14) is laid on the inner side of the clamping arm (15), the first screw rod (16) is installed at the top of the clamping arm (15), the second buffer pad (17) is laid at the bottom of the first screw rod (16), the second buffer pad (17) is located above the oxygen analyzer (13), the bottom of the clamping arm (15) is fixed with the upper end of the loop bar (18), the lower end of the loop bar (18) is connected with the second elastic element (19), andthe second elastic element (19) is positioned in the first sleeve (20) and the second sleeve (21), the lower end of the first sleeve (20) is fixed with the top surface of the bearing plate (12), the top of the bearing plate (12) is provided with a sliding groove (22), the lower end of the second sleeve (21) is positioned in the sliding groove (22), a limiting groove (23) is formed in the second sleeve (21), one end of the second screw rod (24) is installed in the limiting groove (23), and the other end of the second screw rod (24) is positioned outside the bearing plate (12); the first transverse plate (5) is designed into a T-shaped structure, and the first transverse plate (5) and the second transverse plate (7) form a telescopic structure through a first elastic element (8); the loop bar (18) is designed into a T-shaped structure, and the loop bar (18) and the first sleeve (20) form a telescopic structure through the second elastic element (19); the second screw rod (24) is designed into an I-shaped structure, one end of the second screw rod (24) and the limiting groove (23) form a rotating structure, and the second screw rod (24) is in threaded connection with the bearing plate (12);
the using method is as follows: the coal mill body (1) vibrates when crushing coal blocks, and drives the oxygen analyzer (13) to vibrate together, and at the moment, the first buffer pad (14), the second buffer pad (17) and the first sleeve (20) absorb shock and buffer the oxygen analyzer (13), so that damage to internal parts of the oxygen analyzer (13) is avoided; when the oxygen analyzer (13) is maintained, the first screw rod (16) is rotated, and the first screw rod (16) is in threaded connection with the top of the clamping arm (15), so that the first screw rod (16) drives the second buffer pad (17) to move upwards, and the oxygen analyzer (13) is separated from the second buffer pad (17); then, the other end of the second screw rod (24) is rotated, one end of the second screw rod (24) rotates in the limiting groove (23), and as the second screw rod (24) is in threaded connection with the bearing plate (12), the second screw rod (24) pulls the second sleeve (21) to move in the sliding groove (22) towards the direction of the second screw rod (24), so that the second sleeve (21) pulls the clamping arm (15) away from the oxygen analyzer (13) through the loop bar (18), the distance between the clamping arm (15) and the oxygen analyzer (13) is increased, the oxygen analyzer (13) is taken down from the inner side of the clamping arm (15), and then the oxygen analyzer (13) is maintained;
when more coal dust is adhered to the filter screen (11), the coal dust on the filter screen (11) needs to be removed to ensure that air enters the oxygen analyzer (13) through the pipeline (10); at the moment, the rotating shaft (3) is rotated, the rotating shaft (3) drives the protruding block (4) to rotate, the protruding part of the protruding block (4) is contacted with the first transverse plate (5), so that the protruding block (4) pushes the first transverse plate (5) to move towards the inside of the second transverse plate (7), the first elastic element (8) is compressed, meanwhile, the first transverse plate (5) drives the hairbrush (6) at the top of the first elastic element to move towards the direction of the filter screen (11), and the hairbrush (6) brushes away pulverized coal on the filter screen (11), so that meshes on the filter screen (11) are prevented from being blocked; and then the rotating shaft (3) is loosened, and the elastic force generated by the first elastic element (8) pushes the first transverse plate (5) to move back, so that the first transverse plate (5) is restored to the initial state, and the next use is convenient.
2. The coal pulverizer outlet O for explosion protection of claim 1 2 The application method of the on-line monitoring device is characterized by comprising the following steps of: the hairbrushes (6) are uniformly distributed at the top of the first transverse plate (5), the width of the first transverse plate (5) is larger than the diameter of the filter screen (11), and the highest position of the hairbrushes (6) is higher than the highest position of the filter screen (11).
3. The coal pulverizer outlet O for explosion protection of claim 1 2 The application method of the on-line monitoring device is characterized by comprising the following steps of: the first buffer pad (14) is designed to be of an L-shaped structure, the first buffer pad (14) is in adhesive connection with the inner wall of the clamping arm (15), the clamping arm (15) is designed to be of a U-shaped structure, and the first screw rod (16) is in threaded connection with the clamping arm (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910034503.3A CN109696524B (en) | 2019-01-15 | 2019-01-15 | Coal mill outlet O for explosion prevention 2 Online monitoring device and use method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910034503.3A CN109696524B (en) | 2019-01-15 | 2019-01-15 | Coal mill outlet O for explosion prevention 2 Online monitoring device and use method |
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| Publication Number | Publication Date |
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| CN109696524A CN109696524A (en) | 2019-04-30 |
| CN109696524B true CN109696524B (en) | 2023-11-24 |
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| CN111122780A (en) * | 2019-12-24 | 2020-05-08 | 苏州曼德克光电有限公司 | Fixed combustible gas alarm |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0132974A2 (en) * | 1983-08-01 | 1985-02-13 | The Babcock & Wilcox Company | Safety systems for coal pulverizers |
| JP2005241495A (en) * | 2004-02-27 | 2005-09-08 | Mitsubishi Heavy Ind Ltd | Instrument and method for measuring mill-inert oxygen concentration |
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