CN214390605U - Static radial separator of coal mill capable of realizing on-line remote adjustment of coal powder fineness - Google Patents
Static radial separator of coal mill capable of realizing on-line remote adjustment of coal powder fineness Download PDFInfo
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- CN214390605U CN214390605U CN202022412644.5U CN202022412644U CN214390605U CN 214390605 U CN214390605 U CN 214390605U CN 202022412644 U CN202022412644 U CN 202022412644U CN 214390605 U CN214390605 U CN 214390605U
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Abstract
The utility model discloses a coal mill static radial separator capable of realizing on-line remote adjustment of coal powder fineness, each separator baffle is positioned in a coal mill separator shell, all the separator baffles are divided into a plurality of groups, one group of separator baffles corresponds to an electric control system and a baffle adjusting mechanism, a central shaft corresponds to one separator baffle, a signal source is connected with the input end of a controller, the output end of the controller is connected with the control end of an angular travel actuator, the output shaft of the angular travel actuator is connected with the upper end of one central shaft, the central shafts in the same baffle adjusting mechanism are connected through an adjusting connecting rod, the lower end of each central shaft is inserted into the coal mill separator shell and then is connected with the corresponding separator baffle, the separator can realize real-time remote adjustment of coal powder fineness at the outlet of the coal mill, and has simple structure, convenient maintenance, low cost and good energy-saving effect.
Description
Technical Field
The utility model relates to a coal pulverizer static separator, concretely relates to can realize the coal pulverizer static radial separator of online remote regulation of buggy fineness.
Background
The coal sources of the existing power plants are relatively miscellaneous, the fuel quality of the boiler is changed greatly and frequently, and the fineness of the pulverized coal needs to be continuously adjusted according to the change of the coal quality during the operation of the boiler, so that the pulverized coal is combusted more completely, and the operation of the boiler is more efficient and economical. The coal mill separator is adjusted according to the actual coal quality entering the furnace and the operation parameters of the boiler, the fineness of coal dust at the outlet of the coal mill is changed, the problems of boiler operation such as increase of carbon content in fly ash, rise of exhaust gas temperature, increase of desuperheating water and the like caused by coal quality change can be effectively solved, and the problems of burning out of a burner nozzle and coking of a water-cooled wall of a hearth can be effectively avoided.
When the fineness of the coal dust at the outlet of the coal mill needs to be adjusted, the traditional static separator of the coal mill needs to be manually adjusted to the site. Due to the reasons of large adjusting workload, poor field environment, blocking of the adjusting baffle and the like, the effective adjustment of the fineness of the pulverized coal cannot be realized in actual operation. The dynamic separator can effectively solve the problems, can realize real-time adjustment of the fineness of the pulverized coal in a remote place, but has the problems of complex equipment, high cost, high difficulty in maintenance and the like, and the dynamic separator utilizes the motor to drive the rotor to separate the pulverized coal, so that certain electric quantity is wasted.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a can realize the static radial separator of coal pulverizer that the online distant place of buggy fineness was adjusted, this separator can realize the real-time distant place of coal pulverizer export buggy fineness and adjust, and simple structure, and it is convenient to maintain, and is with low costs, and is energy-conserving effectual.
In order to achieve the purpose, the coal mill static radial separator capable of realizing the online remote adjustment of the fineness of the pulverized coal comprises a coal mill separator shell, an electric control system, a baffle adjusting mechanism and a plurality of separator baffles;
each separator baffle is positioned in a separator shell of the coal mill, all the separator baffles are divided into a plurality of groups, one group of separator baffles corresponds to one electric control system and one baffle adjusting mechanism, each baffle adjusting mechanism comprises a plurality of central shafts, each electric control system comprises a controller, a signal source and an angle stroke actuator, one central shaft corresponds to one separator baffle, each signal source is connected with the input end of the controller, the output end of the controller is connected with the control end of the angle stroke actuator, the output shaft of the angle stroke actuator is connected with the upper end of one central shaft, the central shafts in the same baffle adjusting mechanism are connected through adjusting connecting rods, and the lower ends of the central shafts are inserted into the separator shell of the coal mill and then connected with the corresponding separator baffles.
The bearing seat is sleeved on the central shaft and located at the top of the separator shell of the coal mill, an upper deep groove ball bearing is arranged between the top of the bearing seat and the central shaft, and a lower deep groove ball bearing is arranged between the bottom of the bearing seat and the central shaft.
The coal pulverizer also comprises a sealing air inlet pipe, wherein a sealing air chamber is arranged between the separator baffle and the top of the coal pulverizer separator shell, and the sealing air inlet pipe is communicated with the sealing air chamber.
And the upper surface and the lower surface of the lower deep groove ball bearing and the upper deep groove ball bearing are both provided with sealing rings.
The utility model discloses following beneficial effect has:
the utility model discloses a can realize online remote regulation's of buggy fineness coal pulverizer static radial separator when concrete operation, the space of buggy in coal pulverizer separator shell is separated through the rotatory centrifugal force that the separator baffle produced, the time powder gets into the separator internal centrum, the control signal of DCS control system output is sent into the controller through the signal source, the output shaft of controller control angle stroke executor rotates, the output shaft of angle stroke executor drives center pin and separator baffle rotation, in order to change the size of rotatory centrifugal force, and then reach the purpose of adjusting the coal pulverizer export buggy fineness, wherein, only set up one set of electrical control system on a baffle adjustment mechanism in each baffle adjustment mechanism of group, the center pin in other baffle adjustment mechanisms in this group drives through adjusting the connecting rod and realizes the synchronization regulation, therefore save the electric energy, moreover, the steam generator is simple in structure, the coal pulverizer has the advantages that the operation is convenient, the real-time remote adjustment of the fineness of coal powder at the outlet of the coal pulverizer can be realized, the defects of a static separator and a dynamic separator of the traditional coal pulverizer can be effectively avoided, and the practicability is high.
Further, knot mechanism is adjusted to traditional baffle all adopts mechanical packing to seal, very easily causes the center pin bite after buggy gets into the packing box or takes place the mechanism to warp for the unable regulation of separator baffle, the utility model discloses last deep groove ball bearing that is provided with the two sides area sealing washer on the well center pin reaches deep groove ball bearing down, with reducing the regulation resistance, effectively prevents the bite, can guarantee bearing life, makes the center pin to adjust in a flexible way again.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a position diagram of the adjusting link 2 according to the present invention.
Wherein, 1 is the coal mill separator shell 1, 2 is adjusting connecting rod 2, 3 is upper deep groove ball bearing, 4 is lower deep groove ball bearing, 5 is bearing seat 5, 6 is central shaft 6, 7 is sealed wind chamber 7, 8 is sealed wind inlet pipe 8, 9 is separator baffle 9, 10 is angle stroke executor 10, 11 is controller 11, 12 is signal source 12.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1 and 2, the static radial separator of a coal mill capable of realizing on-line remote adjustment of coal powder fineness of the invention comprises a coal mill separator shell 1, an electric control system, a baffle adjusting mechanism and a plurality of separator baffles 9; each separator baffle 9 is positioned in a separator shell 1 of the coal mill, all the separator baffles 9 are divided into a plurality of groups, one group of separator baffles 9 corresponds to one electric control system and one baffle adjusting mechanism, the baffle adjusting mechanism comprises a plurality of central shafts 6, the electric control system comprises a controller 11, a signal source 12 and an angular travel actuator 10, one central shaft 6 corresponds to one separator baffle 9, the signal source 12 is connected with the input end of the controller 11, the output end of the controller 11 is connected with the control end of the angular travel actuator 10, the output shaft of the angular travel actuator 10 is connected with the upper end of one central shaft 6, the central shafts 6 in the same baffle adjusting mechanism are connected through adjusting connecting rods 2, the lower end of each central shaft 6 is inserted into the separator shell 1 of the coal mill and then connected with the corresponding separator baffle 9, the number of the separator baffles 9 is 24, wherein 6 are in one group.
A bearing seat 5 is sleeved on the central shaft 6, wherein the bearing seat 5 is positioned at the top of the coal mill separator shell 1, an upper deep groove ball bearing 3 is arranged between the top of the bearing seat 5 and the central shaft 6, and a lower deep groove ball bearing 4 is arranged between the bottom of the bearing seat 5 and the central shaft 6.
The utility model discloses still including sealed wind inlet tube 8, wherein, be provided with sealed plenum 7 between the top of separator baffle 9 and coal pulverizer separator shell 1, wherein, sealed wind inlet tube 8 is linked together with sealed plenum 7.
And the upper surface and the lower surface of the lower deep groove ball bearing 4 and the upper deep groove ball bearing 3 are both provided with sealing rings.
The utility model discloses a concrete working process does:
the pulverized coal is separated in the space inside the separator shell 1 of the coal mill through the rotating centrifugal force generated by the separator baffle 9, and the returned powder enters the separator inner cone.
Control signals generated by a DCS (distributed control system) are sent into a controller 11 through a signal source 12, the controller 11 controls an output shaft of an angular travel actuator 10 to rotate, the output shaft of the angular travel actuator 10 drives one central shaft 6 to rotate, meanwhile, other corresponding central shafts 6 in the angular travel actuator 10 are driven to rotate through an adjusting connecting rod 2, and a separator baffle 9 is driven to rotate through the central shaft 6 so as to change the magnitude of the rotating centrifugal force and further achieve the purpose of adjusting the fineness of coal dust at an outlet of a coal pulverizer.
In addition, the traditional baffle adjusting mechanism adopts mechanical packing for sealing, and when coal powder enters a packing box or the mechanism deforms, the central shaft 6 is very easy to jam, so that the baffle 9 of the separator cannot be adjusted. The utility model discloses be provided with the last deep groove ball bearing 3 of two sides area sealing washer and the lower deep groove ball bearing 4 of two sides area sealing washer on the well center pin 6, can guarantee bearing life, make center pin 6 can adjust in a flexible way again.
In order to further prevent the pulverized coal from entering the lower deep groove ball bearing 4, a sealing air chamber 7 is arranged, and sealing air output by a sealing air inlet pipe 8 enters the separator through a channel between the sealing air chamber 7 and the central shaft 6 to play a role of sealing.
Claims (2)
1. A static radial separator of a coal mill capable of realizing on-line remote adjustment of coal powder fineness is characterized by comprising a shell (1) of the coal mill separator, an electric control system, a baffle adjusting mechanism and a plurality of separator baffles (9);
each separator baffle (9) is positioned in a separator shell (1) of the coal mill, all the separator baffles (9) are divided into a plurality of groups, one group of separator baffles (9) corresponds to one electric control system and one baffle adjusting mechanism, each baffle adjusting mechanism comprises a plurality of central shafts (6), each electric control system comprises a controller (11), a signal source (12) and an angular travel actuator (10), one central shaft (6) corresponds to one separator baffle (9), the signal source (12) is connected with the input end of the controller (11), the output end of the controller (11) is connected with the control end of the angular travel actuator (10), the output shaft of the angular travel actuator (10) is connected with the upper end of one central shaft (6), the central shafts (6) in the same baffle adjusting mechanism are connected through adjusting connecting rods (2), and the lower ends of the central shafts (6) are inserted into the separator shell (1) of the coal mill and then are connected with the corresponding separator baffles (9) Connecting;
a bearing seat (5) is sleeved on the central shaft (6), wherein the bearing seat (5) is positioned at the top of the coal mill separator shell (1), an upper deep groove ball bearing (3) is arranged between the top of the bearing seat (5) and the central shaft (6), and a lower deep groove ball bearing (4) is arranged between the bottom of the bearing seat (5) and the central shaft (6);
and the upper surface and the lower surface of the lower deep groove ball bearing (4) and the upper deep groove ball bearing (3) are provided with sealing rings.
2. The static radial separator of the coal mill capable of realizing the online remote adjustment of the fineness of the pulverized coal as claimed in claim 1, further comprising a sealing air inlet pipe (8), wherein a sealing air chamber (7) is arranged between the separator baffle plate (9) and the top of the separator shell (1) of the coal mill, and the sealing air inlet pipe (8) is communicated with the sealing air chamber (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022412644.5U CN214390605U (en) | 2020-10-26 | 2020-10-26 | Static radial separator of coal mill capable of realizing on-line remote adjustment of coal powder fineness |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022412644.5U CN214390605U (en) | 2020-10-26 | 2020-10-26 | Static radial separator of coal mill capable of realizing on-line remote adjustment of coal powder fineness |
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| CN214390605U true CN214390605U (en) | 2021-10-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112221682A (en) * | 2020-10-26 | 2021-01-15 | 西安西热锅炉环保工程有限公司 | Static radial separator of coal mill capable of realizing on-line remote adjustment of coal powder fineness |
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- 2020-10-26 CN CN202022412644.5U patent/CN214390605U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112221682A (en) * | 2020-10-26 | 2021-01-15 | 西安西热锅炉环保工程有限公司 | Static radial separator of coal mill capable of realizing on-line remote adjustment of coal powder fineness |
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