CN110152873B - Front-end sundry separating device of pulverized coal separator and coal mill - Google Patents
Front-end sundry separating device of pulverized coal separator and coal mill Download PDFInfo
- Publication number
- CN110152873B CN110152873B CN201910492438.9A CN201910492438A CN110152873B CN 110152873 B CN110152873 B CN 110152873B CN 201910492438 A CN201910492438 A CN 201910492438A CN 110152873 B CN110152873 B CN 110152873B
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- Prior art keywords
- connecting pipe
- middle connecting
- screen device
- separator
- coal
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- 239000003245 coal Substances 0.000 title claims abstract description 52
- 239000000843 powder Substances 0.000 claims abstract description 20
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims description 14
- 230000007246 mechanism Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 abstract description 10
- 239000002817 coal dust Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 230000002411 adverse Effects 0.000 abstract description 5
- 239000012535 impurity Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 7
- 238000000605 extraction Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/20—Adding fluid, other than for crushing or disintegrating by fluid energy after crushing or disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
- B07B11/08—Cleaning arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Combined Means For Separation Of Solids (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention provides a sundry separating device at the front end of a coal dust separator and a coal mill, wherein the separating device is arranged on a middle connecting pipe between an outlet of the coal mill and an inlet of the separator; comprising the following steps: a sundry collecting box and a screen device; the sundry collecting box is arranged on the outer side of the middle connecting pipe, and an openable plugboard is arranged between the sundry collecting box and the middle connecting pipe; the screen device is transversely arranged inside the middle connecting pipe and used for filtering sundries wrapped by coal dust in the middle connecting pipe; one end of the screen device is rotatably connected to the inner wall of the middle connecting pipe at the top end of the plugboard. The device can realize that the sundries wrapped in the pulverized coal from the coal mill can be filtered out under the condition of not interrupting the transportation of the air-powder mixture, so that the adverse effect of the sundries on the separator is avoided, the normal function of the separator is ensured, and the continuous and stable operation of the coal mill is ensured.
Description
Technical Field
The invention relates to the field of optimization of coal-fired power plant pulverizing systems, in particular to a front-end sundry separating device of a coal dust separator and a coal mill.
Background
At present, due to poor coal quality of a coal-fired power plant, raw coal contains more sundries such as weeds, cloth belts, rubber sheets, iron wires, woven bags and the like, and when the sundries pass through a separator, referring to a working schematic diagram of a current coal mill shown in fig. 1, a powder return pipe 10 is arranged, and a plurality of sundries, namely sundries 8 blocked inside an inner cone, can be seen inside the inner cone 4. The baffle opening is blocked due to the fact that the baffle opening is easy to wind on the baffle blades, or the inner cone is blocked due to the fact that the baffle opening is stuck to the inner cone of the separator, so that the separation effect of the separator is gradually deteriorated, and finally the separator is invalid. The following problems are then raised:
1) The air speed and the air quantity in the outlet of the separator and the powder pipe are uneven, the primary air temperature is low, the fineness of the pulverized coal is coarse, the uniformity of the pulverized coal is poor, and the carbon content of fly ash and slag is increased.
2) The output of the coal mill is reduced, the condition of influencing the load is often caused, and the power consumption of the factory and the steel consumption of the coal mill are increased.
3) Large-particle coal dust is easy to deposit on the horizontal pipe section or the elbow part of the primary air pipe, so that the primary air pipe is blocked.
4) In order to ensure stable combustion conditions and reduce fly ash, slag and the like, the coal mill is required to be stopped periodically to manually clean sundries in the separator, and maintenance personnel enter the separator to work due to the internal structure, so that personal safety is threatened, and meanwhile, the operation amount of operation personnel is increased.
5) Due to the limitation and requirement of load, coal quality and operation mode, when the separator of the coal mill is not cleaned, excessive accumulated powder in the separator increases the possibility of coal dust explosion and affects the safe operation of the unit.
6) The primary air temperature of the coal mill is continuously lower, and the pulverized coal in the furnace is not combusted thoroughly, so that the amount of the coal is increased, and the economic operation of the unit is influenced.
The influence of sundries on the coal mill is very large, and the problem needs to be effectively solved.
Disclosure of Invention
The invention aims to solve the problem that impurities in the existing mixed coal easily have adverse effects on a separator and a coal mill, and provides a front-end impurity separating device of a coal powder separator, which is arranged between an outlet of the coal mill and an inlet of the separator, and can filter out impurities wrapped in coal powder from the coal mill, so that adverse effects of impurities on the separator are avoided, normal functions of the separator are ensured, and continuous and stable operation of the coal mill is ensured.
In order to achieve the above object, the first aspect of the present invention adopts the following technical scheme: the sundries separating device at the front end of the coal dust separator is arranged on a middle connecting pipe between the outlet of the coal mill and the inlet of the separator; the separation device comprises: a sundry collecting box and a screen device;
the sundry collecting box is arranged on the outer side of the middle connecting pipe, and an openable plugboard is arranged between the sundry collecting box and the middle connecting pipe;
the screen device is transversely arranged inside the middle connecting pipe and used for filtering sundries wrapped by coal dust in the middle connecting pipe;
One end of the screen device is rotatably connected to the inner wall of the middle connecting pipe at the top end of the plugboard.
Further, one end of the screen device is provided with a hinge shaft hole, and the hinge shaft hole is connected to the inner wall of the middle connecting pipe in a rotating manner through a hinge shaft.
Further, a limiting block is arranged on the inner wall of the middle connecting pipe, and the other end of the screen device is abutted to the limiting block.
Further, the separation device further includes: the device comprises a controller and an electric executing mechanism connected with the controller;
The electric actuating mechanism is in driving connection with the hinge shaft and drives the screen device to rotate through the hinge shaft.
Further, the plugboard is a pneumatic plugboard; the separation device further includes: two driving parts connected with the pneumatic plugboard; the controller is connected with the two driving parts;
The driving section includes: the device comprises a cylinder, a pneumatic switch and a piston rod;
The two cylinders are respectively arranged at two sides of the pneumatic plugboard;
the controller is in control connection with the pneumatic switch; the pneumatic switch is in airtight connection with the air cylinder through a guide pipe; the cylinder is internally provided with a cylinder cavity; one end of the piston rod is connected in the cylinder cavity in a sliding way; the end part of the other end of the piston rod is connected to the pneumatic inserting plate.
Further, the end part of the other end of the piston rod is connected to the pneumatic inserting plate through a pin shaft.
Further, the separation device further includes: the first pressure measuring device and the second pressure measuring device are respectively connected with the controller;
The first pressure measuring device is arranged on the upper side of the screen device;
the second pressure measuring device is arranged on the lower side of the screen device.
Further, an extraction opening is arranged on the sundry collecting box and is connected with an extraction pump;
the air extracting pump is connected with the controller.
In a second aspect, the present invention further provides a coal mill, which includes a front-end sundry separating device of a pulverized coal separator according to any one of the embodiments above.
The invention has the advantages that: firstly, the screen device is utilized to filter out impurities wrapped in pulverized coal from a coal mill, when the impurities are excessively accumulated, the inserting plate can be opened, the screen device is rotated, the accumulated impurities fall into the impurities collecting box, and the impurities are removed. On the premise of ensuring that no coal dust leakage is generated, sundries in the air-powder mixture flowing through the middle connecting pipe can be separated. Adverse effects of sundries on the separator can be effectively avoided, normal functions of the separator are guaranteed, and continuous and stable operation of the coal mill is guaranteed.
Drawings
FIG. 1 is a schematic diagram of a prior art separator debris lock.
Fig. 2 is a schematic cross-sectional view of an intermediate connection pipe according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of normal operation provided in an embodiment of the present invention.
Fig. 4 is a schematic view of removing impurities according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of a screen apparatus according to an embodiment of the present invention.
Fig. 6 is a schematic diagram of an intermediate connection pipe according to an embodiment of the present invention.
Fig. 7 is a schematic diagram of a pneumatic board according to an embodiment of the present invention.
Reference numerals and components referred to in the drawings are as follows:
1-coal mill outlet; 2-an intermediate connection pipe; 3-a wind powder mixture; 4-an inner cone; 5-sundries hung on the blades; 6-separator outlet; 7-stationary blades; 8-sundries blocked inside the inner cone; 9-separator inlet; 10-a powder return pipe; 11-a first pressure measuring device; 12-hinging shaft; 13-a screen device discharge position; 14-an extraction opening; 15-a sundry collecting box; 16-plugboards; 17-a screen device; 18-a second pressure measuring device; 19-sundries; 20-hinge holes; 21-sieve pores; 22-an electric actuator; 23-pneumatic plugboards; 24-cylinder; 25-pin shafts; 26-controller.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Referring to fig. 1, a schematic diagram of the operation of a conventional coal mill is shown, in which a powder return pipe 10 is installed, and a plurality of sundries are visible inside an inner cone 4, namely, sundries 8 blocked inside the inner cone. The wind-powder mixture 3 enters the intermediate connecting pipe 2 from the coal mill outlet 1, is separated into a separator inlet 9, passes through the stator blades 7 and finally is discharged from the separator outlet 6. The static blades 7 are also affected by sundries 5 hung on the blades, so that efficiency is reduced, load is increased, and safe operation of the unit is affected.
Therefore, the sundries separating device at the front end of the pulverized coal separator is arranged on the middle connecting pipe 2 between the outlet 1 of the coal mill and the inlet 9 of the separator as shown in the figures 2-4; the separation device comprises: a foreign matter collection box 15 and a screen device 17;
Wherein, the sundry collecting box 15 is arranged outside the middle connecting pipe 2, and an openable plugboard 16 is arranged between the sundry collecting box 15 and the middle connecting pipe 2;
referring to fig. 5, the screen device 17 is provided with a screen hole 21 for allowing the air-powder mixture to pass therethrough while blocking foreign matters.
The screen device 17 is transversely arranged inside the middle connecting pipe 2 and is used for filtering sundries wrapped by the coal powder in the middle connecting pipe 2; one end of the screen device 17 is rotatably connected to the inner wall of the intermediate connection pipe 2 at the top end of the insert plate 16. The coal powder is carried by hot air and enters the separator through the intermediate connecting pipe 2 after coming out of the outlet 1 of the coal mill. The flow rate of the air-powder mixture in the intermediate connection pipe 2 is about 20-30 m/s, and the pressure in the intermediate connection pipe 2 is higher than the external environment by about 3000pa. In the embodiment, the separating device can separate sundries in the air-powder mixture flowing through the middle connecting pipe on the premise of ensuring that no coal dust leakage occurs; adverse effects of sundries on the separator can be avoided, normal functions of the separator are guaranteed, and continuous and stable operation of the coal mill is guaranteed.
In the specific embodiment, for example, the sundry collecting box is a rectangular structural body, and the middle connecting pipe is a cylinder; attaching a sundry collecting box on the middle connecting pipe; in one embodiment, the screen assembly 17 is generally circular in shape with a right angle edge at the circular edge; the right-angle side is provided with a hinge hole 20, and the hinge hole 20 is rotatably connected to the inner wall of the intermediate connection pipe 2 through a hinge 12.
Referring to fig. 3, for example, when foreign materials are excessively attached to the screen device 17, the screen device is in a normal operation state. Referring to fig. 4, the insert plate may be opened to communicate the foreign material collection box 17 with the intermediate connection pipe 2; at this time, the screen device 17 is rotated to the opening of the sundry collecting box 15, and when the screen device reaches the unloading position 13 in fig. 2, the attached sundries can fall off under the action of gravity and fall into the sundry collecting box 15, so that sundries are separated; when the foreign matter falls completely into the foreign matter collection box 15, the insertion plate 16 is closed, and the rotary screen device 17 is reset, as shown in fig. 3.
Further, when the screen device 17 is disposed transversely, if there are many impurities, the resistance generated is large, which easily causes the screen device 17 to shift or be damaged, so that a stopper (not shown) may be disposed on the inner wall of the intermediate connection pipe, and the other end of the screen device 17 may abut against the stopper.
Further, in order to achieve the intelligence and automation, the separation device further comprises: a controller 26 and an electric actuator 22 connected to the controller 26; referring to fig. 6, the positional relationship among the intermediate connection pipe 2, the impurity separating box 15, and the electric actuator 22 is schematically shown.
The electric actuator 22 is in driving connection with the hinge shaft 12, the screen device 22 is driven to rotate through the hinge shaft 12, and when more sundries exist or the preset time length is reached, the electric actuator 22 can be controlled by the controller 26 to act, so that the screen device 17 is driven to rotate, and the sundries are separated.
Further, the board 16 may be configured to be automatically opened; such as pneumatic insert plate 23; referring to fig. 6-7, the separation device further includes two driving parts; the two driving parts are in driving connection with the two sides of the pneumatic plugboard 23; the controller 26 is connected with the two driving parts; wherein, this drive portion includes: a cylinder 24, a pneumatic switch and a piston rod; the controller 26 is in control connection with the pneumatic switch; the pneumatic switch is connected with the air cylinder 24 through a conduit in an airtight manner; the cylinder 24 has a cylinder chamber therein; one end of the piston rod is slidably connected in the cylinder cavity, and the other end of the piston rod is connected to the pneumatic inserting plate 23.
Referring to fig. 7, the pneumatic plug board 23 is composed of a pneumatic plug board 23, two air cylinders 24 and two pin shafts 25, wherein the air cylinders 24 are arranged on the pneumatic plug board 23 through the pin shafts 25. The cylinder 24 is fixed on the sundry collecting box 15, and the pneumatic plugboard 23 is opened and closed by the extension and contraction of a piston rod in the cylinder.
Further, the separation device further includes: a first pressure measuring device 11 and a second pressure measuring device 18 respectively connected to the controller 26; the first pressure measuring device 11 is arranged on the upper side of the screen device 17; the second pressure measuring device 18 is arranged on the underside of the screen device 17. When the pressure difference obtained by the two pressure measuring devices is larger than the threshold pressure difference stored by the controller, the clear sundry tank is opened, for example, as shown in fig. 4, the driving part is controlled to drive the pneumatic plugboard to be opened, and the electric actuating mechanism 22 is controlled to drive the screen device 17 to rotate 90 degrees clockwise around the hinge shaft 12 through the hinge shaft 12, so that sundries fall into the sundry collecting box 15.
Wherein the pressure measuring device is, for example, a pressure sensor, a pressure transmitter or a pressure measuring tube; the pressure sensor and the pressure transmitter utilize certain physical characteristics of an object, convert the measured pressure into various electric quantity signals through different conversion elements, and indirectly measure the pressure according to the change of the signals; the controller may obtain the pressure parameter.
In addition, according to the different conversion elements, the pressure sensor and the pressure transmitter can be in the forms of resistance, capacitance, strain, inductance, piezoelectric, hall plate and the like.
Further, referring to fig. 6, an air suction port 14 may be provided in the debris collection box 15, and the air suction port 14 is connected to an air suction pump (not shown); the controller 26 is in control connection with the suction pump. When the screen device 17 rotates 90 degrees clockwise around the hinge shaft 12 to separate sundries, the suction pump is used for sucking air, so that the sundries can be released from the screen device 17 in an express way, and the operation efficiency is improved.
The technical scheme of the invention is described below through a complete embodiment.
Referring to fig. 2, a foreign matter collecting box 15 is installed on the intermediate connection pipe 2, a screen device 17 is installed on the foreign matter collecting box through a hinge shaft 12, an upper pressure measuring pipe is installed on the upper side of the screen device, a lower pressure measuring pipe is installed on the lower side of the screen device, and an electric actuator 22 is connected with the hinge shaft 12 to drive the screen device 17 to rotate through the hinge shaft 12.
In the normal working state, referring to fig. 3, the pneumatic insert plate 23 is in a closed state, the screen device 17 is in a horizontal position, when the wind-powder mixture 3 passes through, the sundries 19 are blocked by the screen device 17 and are stuck on the screen device 17, and meanwhile, the sundries 19 cause the resistance of the screen device 17 to increase. The pressure difference at two sides of the screen device 17 is detected by the upper pressure difference pipe and the lower pressure difference pipe, when the pressure difference is larger than a set value, the operation of removing sundries is started,
Referring to fig. 4, firstly, the pneumatic insert plate 23 is opened, then the electric actuator 22 drives the screen device 17 to rotate 90 degrees clockwise around the hinge shaft through the hinge shaft 12, simultaneously, the air suction opening 14 starts to suck air, air flows from the right side to the left side of the screen device 17, and sundries hung on the screen device 17 are blown down by the air flow and fall into the sundry collecting box 15. After the air extraction is finished, the screen device 17 is reset by 90 degrees anticlockwise, and the pneumatic plugboard 23 is reset. In addition, the sundries in the sundry collecting box can be cleaned at regular time.
The controller 26 receives the pressure signal measured by the differential pressure pipe, and after comparative analysis, when the pressure difference between the upper differential pressure pipe and the lower differential pressure pipe exceeds a set value, the controller 26 sequentially sends instructions to the driving part (driving the pneumatic plugboard), the electric actuating mechanism (driving the hinge shaft) and the air pump (exhausting through the air exhaust hole), firstly, the pneumatic plugboard is started, then the screen device is rotated clockwise for 90 degrees, then the air exhaust hole is started, and sundries on the screen device begin to be cleaned. After the cleaning is completed, the controller 26 sends out a command again to stop the air suction and reset the screen device, and the pneumatic plugboard is reset.
The device can separate sundries from the air-powder mixture under the condition of not interrupting the transportation of the air-powder mixture, and ensures continuous and stable operation of the coal mill.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and are not limiting. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present invention, which is intended to be covered by the appended claims.
Claims (2)
1. The front sundries separating device of the pulverized coal separator is characterized by being arranged on a middle connecting pipe (2) between an outlet (1) of a coal mill and an inlet (9) of the separator; the separation device comprises: a sundry collecting box (15) and a screen device (17);
The sundry collecting box (15) is arranged at the outer side of the middle connecting pipe (2), and an openable plugboard (16) is arranged between the sundry collecting box (15) and the middle connecting pipe (2);
The screen device (17) is provided with screen holes, and the screen device (17) is transversely arranged inside the middle connecting pipe (2) and is used for filtering sundries wrapped by coal powder in the middle connecting pipe (2);
One end of the screen device (17) is rotatably connected to the inner wall of the middle connecting pipe (2) at the top end of the plugboard (16);
The separation device further includes: a controller (26) and an electric actuator connected with the controller (26);
The electric actuating mechanism is in driving connection with the hinge shaft (12), and the screen device (17) is driven to rotate through the hinge shaft (12);
the plugboard (16) is a pneumatic plugboard (23); the separation device further includes: two driving parts connected with the pneumatic plugboard (23); the controller (26) is connected with the two driving parts;
the driving section includes: a cylinder (24), a pneumatic switch and a piston rod;
two cylinders (24) are respectively arranged at two sides of the pneumatic plugboard;
the controller (26) is in control connection with the pneumatic switch; the pneumatic switch is in airtight connection with the air cylinder (24) through a guide pipe; the cylinder (24) is internally provided with a cylinder cavity; one end of the piston rod is connected in the cylinder cavity in a sliding way; the end part of the other end of the piston rod is connected to the pneumatic inserting plate (23);
the separation device further includes: a first pressure measuring device (11) and a second pressure measuring device (18) respectively connected with the controller (26);
the first pressure measuring device (11) is arranged on the upper side of the screen device (17);
the second pressure measuring device (18) is arranged at the lower side of the screen device (17);
an air extracting opening (14) is formed in the sundry collecting box (15), and the air extracting opening (14) is connected with an air extracting pump;
The air extracting pump is connected with the controller (26); one end of the screen device (17) is provided with a hinge shaft hole (20), and the hinge shaft hole (20) is rotationally connected to the inner wall of the middle connecting pipe (2) through a hinge shaft (12); the end part of the other end of the piston rod is connected to the pneumatic inserting plate (23) through a pin shaft; the inner wall of the middle connecting pipe (2) is provided with a limiting block, and the other end of the screen device (17) is abutted against the limiting block.
2. A coal mill comprising a pulverized coal separator front-end debris separation device according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910492438.9A CN110152873B (en) | 2019-06-06 | 2019-06-06 | Front-end sundry separating device of pulverized coal separator and coal mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910492438.9A CN110152873B (en) | 2019-06-06 | 2019-06-06 | Front-end sundry separating device of pulverized coal separator and coal mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110152873A CN110152873A (en) | 2019-08-23 |
| CN110152873B true CN110152873B (en) | 2024-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910492438.9A Active CN110152873B (en) | 2019-06-06 | 2019-06-06 | Front-end sundry separating device of pulverized coal separator and coal mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110152873B (en) |
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|---|---|---|---|---|
| GB1349000A (en) * | 1970-07-08 | 1974-03-27 | Condux Werk | Method of and apparatus for separating material |
| CN2803537Y (en) * | 2005-05-24 | 2006-08-09 | 周志强 | Self-damping storage wood brick separator |
| CN101648652A (en) * | 2009-09-17 | 2010-02-17 | 山东电力研究院 | Sundries separator for positive pressure coal dust preparation system |
| CN201524662U (en) * | 2009-07-29 | 2010-07-14 | 钊学明 | Sundries separator |
| CN105797958A (en) * | 2016-05-08 | 2016-07-27 | 衢州市依科达节能技术有限公司 | Tubular wood block separation cutter |
| CN109236473A (en) * | 2018-09-26 | 2019-01-18 | 国网河北省电力有限公司电力科学研究院 | Portable cleaning device for gas turbine inlet air filtration system |
| CN109289292A (en) * | 2018-12-10 | 2019-02-01 | 北京北排装备产业有限公司 | A kind of hydraulic screen automatic turning device and its application method |
| CN208824978U (en) * | 2018-08-16 | 2019-05-07 | 长春热电发展有限公司 | Coal Pulverizing System of Thermal Power Plant sundries separator |
| CN210207187U (en) * | 2019-06-06 | 2020-03-31 | 上海意丰机电科技开发有限公司 | Buggy separator front end debris separator and coal pulverizer |
-
2019
- 2019-06-06 CN CN201910492438.9A patent/CN110152873B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1349000A (en) * | 1970-07-08 | 1974-03-27 | Condux Werk | Method of and apparatus for separating material |
| CN2803537Y (en) * | 2005-05-24 | 2006-08-09 | 周志强 | Self-damping storage wood brick separator |
| CN201524662U (en) * | 2009-07-29 | 2010-07-14 | 钊学明 | Sundries separator |
| CN101648652A (en) * | 2009-09-17 | 2010-02-17 | 山东电力研究院 | Sundries separator for positive pressure coal dust preparation system |
| CN105797958A (en) * | 2016-05-08 | 2016-07-27 | 衢州市依科达节能技术有限公司 | Tubular wood block separation cutter |
| CN208824978U (en) * | 2018-08-16 | 2019-05-07 | 长春热电发展有限公司 | Coal Pulverizing System of Thermal Power Plant sundries separator |
| CN109236473A (en) * | 2018-09-26 | 2019-01-18 | 国网河北省电力有限公司电力科学研究院 | Portable cleaning device for gas turbine inlet air filtration system |
| CN109289292A (en) * | 2018-12-10 | 2019-02-01 | 北京北排装备产业有限公司 | A kind of hydraulic screen automatic turning device and its application method |
| CN210207187U (en) * | 2019-06-06 | 2020-03-31 | 上海意丰机电科技开发有限公司 | Buggy separator front end debris separator and coal pulverizer |
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| Publication number | Publication date |
|---|---|
| CN110152873A (en) | 2019-08-23 |
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