CN105251602A - Pulverized coal concentration adjusting valve for coal mill of coal pulverizing system - Google Patents

Pulverized coal concentration adjusting valve for coal mill of coal pulverizing system Download PDF

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Publication number
CN105251602A
CN105251602A CN201510747251.0A CN201510747251A CN105251602A CN 105251602 A CN105251602 A CN 105251602A CN 201510747251 A CN201510747251 A CN 201510747251A CN 105251602 A CN105251602 A CN 105251602A
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CN
China
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valve
coal
control valve
rotary shaft
flase floor
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Application number
CN201510747251.0A
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Chinese (zh)
Inventor
朱明丽
张芳领
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浙江宜清环境技术有限公司
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Priority to CN201510747251.0A priority Critical patent/CN105251602A/en
Publication of CN105251602A publication Critical patent/CN105251602A/en

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Abstract

The invention provides a pulverized coal concentration adjusting valve for a coal mill of a coal pulverizing system in the technical field of components of a coal mill of a coal pulverizing system. The pulverized coal concentration adjusting valve is installed on a coal mill outlet powder pipe (1) and comprises an adjusting valve body (2). The adjusting valve body (2) comprises a powder inlet end opening (3) and a powder outlet end opening (4). A rotating shaft (5) is arranged in the adjusting valve body (2) and provided with a plurality of grid plates (6) protruding out of the rotating shaft (5). The rotating shaft (5) is connected with a drive motor (7) connected with a control component (8). The pulverized coal concentration adjusting valve is simple in structure, the air volume and the pulverized coal distribution of an outlet powder pipe of the coal mill can be controlled within the effective range meeting the requirement, and the primary air powder allocation characteristic of the coal pulverizing system is greatly improved.

Description

A kind of coal powder density control valve for pulverized coal preparation system coal pulverizer

Technical field

The invention belongs to pulverized coal preparation system coal pulverizer parts technical field, more particularly, relate to a kind of coal powder density control valve for pulverized coal preparation system coal pulverizer.

Background technology volume

The application of modern considerable coal-fired boiler unit pulverized-coal system coal-grinding powder is quite general, and whether pulverized coal preparation system coal pulverizer each burner primary wind and powder distributed uniform is one of key factor determining Combustion Operation of Boilers.The primary air velocity of each burner of reasonable disposition and coal powder density are the essential condition ensureing boiler controller system safety, economical operation, are also low NO, the precondition that combustion technology is implemented smoothly.Wind powder between each burner distributes uneven, to directly affect catching fire and surely firing of coal pulverizer outlet breeze airflow, cause eccentricity of fire, wash away furnace wall, furnace load and Temperature Deviation, NOX discharge capacity increases, also can cause coal dust deposition in horizontal pipe, cause plugging, cause corresponding burner to burn out, even cause local reduction atmosphere strong and produce the corrosion of heating surface localized hyperthermia or the problem such as coking, booster, drastically influence security and the economy of coal pulverizer operation.Clear stipulaties in power industry standard " thermal power plant coal dust preparation system design standard and computational methods ", with the coal dust between each primary air piping of grate firing burner and air, uniform distribution is answered to pulverized coal preparation system coal pulverizer, its air quantity difference is not more than scholar 8%, coal powder distribation deviation is not more than scholar 10%, still effectively can not solve problems at present.

Summary of the invention

Technical problem to be solved by this invention is: for the technical deficiency existed in prior art, there is provided a kind of structure simple, air quantity and the coal powder distribation that coal pulverizer can be exported tube cell control in the effective range satisfied the demands, greatly improve pulverized coal preparation system primary wind and powder partition characteristic, final effectively solution wind speed degree deviation is large, coal powder density deviation is large, the coal powder density control valve of the pulverized coal preparation system coal pulverizer of the large problem of fineness of pulverized coal deviation.

Solve above-described technical problem, the technical scheme that the present invention takes is:

The present invention is a kind of coal powder density control valve for pulverized coal preparation system coal pulverizer, pulverized coal preparation system coal pulverizer comprises coal pulverizer outlet tube cell, described coal powder density control valve is arranged on coal pulverizer outlet tube cell, coal powder density control valve comprises control valve valve body, control valve valve body comprises powder entering end mouth and powder delivery port, in control valve valve body, rotary shaft body is set, the rotary shaft body being positioned at control valve valve body arranges multiple flase floor protruding from rotary shaft body, rotary shaft body is connected with drive motors, and drive motors is connected with control assembly.

Described coal pulverizer outlet tube cell comprises outlet tube cell leading portion and outlet tube cell back segment, the powder entering end mouth of control valve valve body is fixedly connected with outlet tube cell leading portion, the powder delivery port of control valve valve body is fixedly connected with outlet tube cell back segment, and drive motors is set to the structure that can be regulated the rotational angle of rotary shaft body by control assembly.

The valve body left side wall of described control valve valve body arranges driving shaft, the valve body right side wall of control valve valve body arranges driven shaft, rotary shaft body one end is fixedly connected with driving shaft one end, the rotary shaft body other end is fixedly connected with driven shaft, the driving shaft other end extends to control valve valve body outside and is connected with drive motors, and rotary shaft body is set to the structure be arranged in parallel with powder entering end mouth end face and powder delivery port end face.

Described multiple flase floors protruding from rotary shaft body are plate structure, each flase floor surface arranges the structure of band wave curved surface, rotary shaft body arranges multiple flase floor arranged by gap for one week along rotary shaft body, form a flase floor assembly along the rotary shaft body flase floor of a week, rotary shaft body is arranged multiple flase floor assembly arranged by gap.

The valve body left side wall of described control valve valve body is arranged the wear-resistant ceramic layer fit together with valve body left side wall, the valve body right side wall of described control valve valve body is arranged another layer of wear-resistant ceramic layer fit together with valve body right side wall, described driving shaft is arranged on the wear-resistant ceramic layer that fits together with valve body left side wall, and driven shaft is arranged on another layer of wear-resistant ceramic layer fit together with valve body right side wall.

One group of flase floor assembly of described rotary shaft body middle part is set to the longest structure of length, the structure that length shortens successively is set to from one group of flase floor assembly of rotary shaft body middle part to several groups of flase floor assemblies in valve body left side wall direction, be set to from one group of flase floor assembly of rotary shaft body middle part to several groups of flase floor assemblies in valve body right side wall direction the structure that length shortens successively, the flase floor assembly near valve body left side wall and the flase floor assembly near valve body right side wall are set to the shortest structure of length.

Adopt technical scheme of the present invention, following beneficial effect can be obtained:

Coal powder density control valve for pulverized coal preparation system coal pulverizer of the present invention, during coal pulverizer work, by control assembly, turning of drive motors is stopped and rotating speed controls, flase floor in the rotary shaft body driven by drive motors is rotated along with the rotation of drive motors, like this, breeze airflow is when the flow area by coal powder density control valve, due to the regulating action of flase floor, make primary air flow, First air flow velocity, First air concentration is reduced within zone of reasonableness, reach regulating action, thus realize the object of coal powder density adjustment, coal powder density control valve for pulverized coal preparation system coal pulverizer of the present invention, structure is simple, air quantity and the coal powder distribation that coal pulverizer can be exported tube cell control in the effective range satisfied the demands, greatly improve pulverized coal preparation system primary wind and powder partition characteristic, while adjustment does not divide concentration, final effectively solution wind speed degree deviation is large, coal powder density deviation is large, the large problem of fineness of pulverized coal deviation, the various problems that basic elimination considerable coal-fired boiler is relevant with primary wind and powder partition characteristic, effectively can improve the security of unit operation, economy and environmental protection.

Accompanying drawing explanation

Brief description is made to the content expressed by each accompanying drawing of this description and the mark in figure below:

Fig. 1 is the structural representation of the coal powder density control valve for pulverized coal preparation system coal pulverizer of the present invention;

Accompanying drawing acceptance of the bid note is respectively: 1, coal pulverizer outlet tube cell; 2, control valve valve body; 3, powder entering end mouth; 4, powder delivery port; 5, rotary shaft body; 6, flase floor; 7, drive motors; 8, control assembly; 9, tube cell leading portion is exported; 10, tube cell back segment is exported; 11, valve body left side wall; 12, driving shaft; 13, valve body right side wall; 14, driven shaft; 15, flase floor assembly; 16, wear-resistant ceramic layer.

Detailed description of the invention

Contrast accompanying drawing below, by the description to embodiment, the effect and operation principle etc. of the specific embodiment of the present invention as the mutual alignment between the shape of involved each component, structure, each several part and annexation, each several part are described in further detail:

As shown in Figure 1, the present invention is a kind of coal powder density control valve for pulverized coal preparation system coal pulverizer, pulverized coal preparation system coal pulverizer comprises coal pulverizer outlet tube cell 1, described coal powder density control valve is arranged on coal pulverizer outlet tube cell 1, coal powder density control valve comprises control valve valve body 2, control valve valve body 2 comprises powder entering end mouth 3 and powder delivery port 4, rotary shaft body 5 is set in control valve valve body 2, the rotary shaft body 5 being positioned at control valve valve body 2 arranges multiple flase floor 6 protruding from rotary shaft body 5, rotary shaft body 5 is connected with drive motors 7, drive motors 7 is connected with control assembly 8.Said structure is arranged, when pulverized coal preparation system coal pulverizer works, by control assembly, turning of drive motors is stopped and rotating speed controls, flase floor in the rotary shaft body driven by drive motors is rotated along with the rotation of drive motors, like this, breeze airflow is when the flow area by coal powder density control valve, due to the regulating action of flase floor, make primary air flow, First air flow velocity, First air concentration is reduced within zone of reasonableness, reach regulating action, thus realize the object of coal powder density adjustment, coal powder density control valve for pulverized coal preparation system coal pulverizer of the present invention, structure is simple, air quantity and the coal powder distribation that coal pulverizer can be exported tube cell control in the effective range satisfied the demands, greatly improve pulverized coal preparation system primary wind and powder partition characteristic, while adjustment does not divide concentration, final effectively solution wind speed degree deviation is large, coal powder density deviation is large, the large problem of fineness of pulverized coal deviation, the various problems that basic elimination considerable coal-fired boiler is relevant with primary wind and powder partition characteristic, effectively can improve the security of unit operation, economy and environmental protection.

Described coal pulverizer outlet tube cell 1 comprises outlet tube cell leading portion 9 and outlet tube cell back segment 10, the powder entering end mouth 3 of control valve valve body 2 is fixedly connected with outlet tube cell leading portion 9, the powder delivery port 4 of control valve valve body 2 is fixedly connected with outlet tube cell back segment 10, and described drive motors 7 is set to the structure that can be regulated the rotational angle of rotary shaft body 5 by control assembly 8.Said structure is arranged, the coal powder density control valve being used for pulverized coal preparation system coal pulverizer is arranged on comprising outlet tube cell leading portion 9 and exporting between tube cell back segment 10 of coal pulverizer outlet tube cell 1, by the change of rotary shaft body rotational angle, realize the change of flase floor angle, thus can easily the air quantity of each for coal pulverizer coal pulverizer outlet tube cell and coal powder distribation deviation be controlled within (8-10) %, resistance is less than 0.5kPa, and the shrinkage cavity of former pulverized coal preparation system for each resistance of ducting characteristic of equilibrium can be abandoned: the partition characteristic substantially improving coal pulverizer wind powder, eliminate the various problems that considerable coal-fired boiler is relevant with wind powder partition characteristic, effectively can improve the security of unit operation, economy and environmental protection effect.

The valve body left side wall 11 of described control valve valve body 2 arranges driving shaft 12, the valve body right side wall 13 of control valve valve body 2 arranges driven shaft 14, rotary shaft body 5 one end is fixedly connected with driving shaft 12 one end, rotary shaft body 5 other end is fixedly connected with driven shaft 14, driving shaft 12 other end extends to control valve valve body 2 outside and is connected with drive motors 7, and rotary shaft body 5 is set to the structure be arranged in parallel with powder entering end mouth 3 end face and powder delivery port 4 end face.Such vibrational power flow, improves the installation capability of rotary shaft body, and rotary shaft body is under drive motors drives, flase floor is driven to rotate and angular adjustment, coal dust by coal pulverizer outlet tube cell 1 is regulated, realizes the object that coal powder density regulates, improve the service behaviour of whole coal pulverizer.

Described multiple flase floors 6 protruding from rotary shaft body 5 are plate structure, each flase floor 6 surface arranges the structure of band wave curved surface, rotary shaft body 5 arranges multiple flase floor 6 arranged by gap for 5 one weeks along rotary shaft body, form a flase floor assembly 15 along the rotary shaft body flase floor of 5 one weeks 6, rotary shaft body 5 is arranged multiple flase floor assembly 15 arranged by gap.

The valve body left side wall 11 of described control valve valve body 2 is arranged the wear-resistant ceramic layer 16 fit together with valve body left side wall 11, the valve body right side wall 13 of described control valve valve body 2 is arranged another layer of wear-resistant ceramic layer 16 fit together with valve body right side wall 13, described driving shaft 12 is arranged on the wear-resistant ceramic layer 16 that fits together with valve body left side wall 11, and driven shaft 14 is arranged on another layer of wear-resistant ceramic layer 16 fit together with valve body right side wall 13.The setting of wear-resistant ceramic layer 16, adds wearability, improves the reliability and wearability that are connected with between driving shaft and driven shaft, improves the service behaviour of whole coal pulverizer.

One group of flase floor assembly 15 of described rotary shaft body 5 middle part is set to the longest structure of length, the structure that length shortens successively is set to from one group of flase floor assembly 15 of rotary shaft body 5 middle part to several groups of flase floor assemblies 15 in valve body left side wall 11 direction, be set to from one group of flase floor assembly 15 of rotary shaft body 5 middle part to several groups of flase floor assemblies 15 in valve body right side wall 11 direction the structure that length shortens successively, the flase floor assembly 15 near valve body left side wall 11 and the flase floor assembly 15 near valve body right side wall 13 are set to the shortest structure of length.Arranged by the difference of grating board structure, different adjustment can be carried out to what regulate valve body 2 by cross section, thus meet different adjustment requirements.By the setting of flase floor, can regulate the concentration of the coal dust by control valve valve body, under the effect of control valve, breeze airflow flows through in the middle of valve, flow velocity equilibrium is realized under the effect of balanced valve, equalization of concentration, the object of fineness equilibrium, final effectively solution wind speed degree deviation is large, coal powder density deviation is large, the large problem of fineness of pulverized coal deviation.

Coal powder density control valve for pulverized coal preparation system coal pulverizer of the present invention, be arranged in coal pulverizer outlet tube cell position, in resistance of ducting optimal location installation site, according under coal powder density online data and relevant wind speed degree, fineness parameter, control drive motors by control assembly automatically to control, angle adjustment can be carried out to flase floor quickly and easily, reach the object that coal powder density is regulated.

Coal powder density control valve for pulverized coal preparation system coal pulverizer of the present invention, effectively can adjust the coal dust amount along furnace height direction, changes burner hearth flame centre-height, adjustment flue gas temperature of hearth outlet.The bias combustion of breeze airflow can be realized, rich-lean ratio mean value 3.65, breeze airflow be shifted to an earlier date ignition time, reduces unburned carbon loss, improve boiler combustion efficiency, ensure that the stability that underload catches fire and burns.According to factors such as coal pulverizer duty, furnace outlet gas temperature, generated outputs, leaf grating angle can be automatically adjusted, both can realize remote auto and control, can manual operation have been realized again.Effectively reducing discharged nitrous oxides value when burning bituminous coal, to improving atmospheric environment, there is good effect.

Coal powder density control valve for pulverized coal preparation system coal pulverizer of the present invention, during coal pulverizer work, by control assembly, turning of drive motors is stopped and rotating speed controls, flase floor in the rotary shaft body driven by drive motors is rotated along with the rotation of drive motors, like this, breeze airflow is when the flow area by coal powder density control valve, due to the regulating action of flase floor, make primary air flow, First air flow velocity, First air concentration is reduced within zone of reasonableness, reach regulating action, thus realize the object of coal powder density adjustment, coal powder density control valve for pulverized coal preparation system coal pulverizer of the present invention, structure is simple, air quantity and the coal powder distribation that coal pulverizer can be exported tube cell control in the effective range satisfied the demands, greatly improve pulverized coal preparation system primary wind and powder partition characteristic, while adjustment does not divide concentration, final effectively solution wind speed degree deviation is large, coal powder density deviation is large, the large problem of fineness of pulverized coal deviation, the various problems that basic elimination considerable coal-fired boiler is relevant with primary wind and powder partition characteristic, effectively can improve the security of unit operation, economy and environmental protection.

Above by reference to the accompanying drawings to invention has been exemplary description; the concrete realization of obvious the present invention is not subject to the restrictions described above; as long as have employed the various improvement that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasions, all in protection scope of the present invention without to improve.

Claims (6)

1. the coal powder density control valve for pulverized coal preparation system coal pulverizer, pulverized coal preparation system coal pulverizer comprises coal pulverizer outlet tube cell (1), it is characterized in that: described coal powder density control valve is arranged on coal pulverizer outlet tube cell (1), coal powder density control valve comprises control valve valve body (2), control valve valve body (2) comprises powder entering end mouth (3) and powder delivery port (4), rotary shaft body (5) is set in control valve valve body (2), the rotary shaft body (5) being positioned at control valve valve body (2) arranges multiple flase floor (6) protruding from rotary shaft body (5), rotary shaft body (5) is connected with drive motors (7), drive motors (7) is connected with control assembly (8).
2. the coal powder density control valve for pulverized coal preparation system coal pulverizer according to claim 1, it is characterized in that: described coal pulverizer outlet tube cell (1) comprises outlet tube cell leading portion (9) and outlet tube cell back segment (10), the powder entering end mouth (3) of control valve valve body (2) is fixedly connected with outlet tube cell leading portion (9), the powder delivery port (4) of control valve valve body (2) is fixedly connected with outlet tube cell back segment (10), described drive motors (7) is set to the structure that can be regulated the rotational angle of rotary shaft body (5) by control assembly (8).
3. the coal powder density control valve for pulverized coal preparation system coal pulverizer according to claim 1, it is characterized in that: the valve body left side wall (11) of described control valve valve body (2) arranges driving shaft (12), the valve body right side wall (13) of control valve valve body (2) arranges driven shaft (14), rotary shaft body (5) one end is fixedly connected with driving shaft (12) one end, rotary shaft body (5) other end is fixedly connected with driven shaft (14), driving shaft (12) other end extends to control valve valve body (2) outside and is connected with drive motors (7), rotary shaft body (5) is set to the structure be arranged in parallel with powder entering end mouth (3) end face and powder delivery port (4) end face.
4. the coal powder density control valve for pulverized coal preparation system coal pulverizer according to claim 1, it is characterized in that: described multiple rotary shaft body (5) flase floors (6) that protrude from are plate structure, each flase floor (6) surface arranges the structure of band wave curved surface, rotary shaft body (5) arranges multiple flase floor (6) arranged by gap for (5) one weeks along rotary shaft body, along the rotary shaft body flase floor (6) of (5) weeks composition flase floor assembly (15), rotary shaft body (5) is arranged multiple flase floor assembly (15) arranged by gap.
5. the coal powder density control valve for pulverized coal preparation system coal pulverizer according to claim 3, it is characterized in that: the valve body left side wall (11) of described control valve valve body (2) is upper arranges the wear-resistant ceramic layer (16) fit together with valve body left side wall (11), the valve body right side wall (13) of described control valve valve body (2) is upper arranges another layer of wear-resistant ceramic layer (16) fit together with valve body right side wall (13), described driving shaft (12) is arranged on the wear-resistant ceramic layer (16) that fits together with valve body left side wall (11), driven shaft (14) is arranged on another layer of wear-resistant ceramic layer (16) fit together with valve body right side wall (13).
6. the coal powder density control valve for pulverized coal preparation system coal pulverizer according to claim 4, it is characterized in that: one group of flase floor assembly (15) of described rotary shaft body (5) middle part is set to the longest structure of length, the structure that length shortens successively is set to from one group of flase floor assembly (15) of rotary shaft body (5) middle part to several groups of flase floor assemblies (15) in valve body left side wall (11) direction, the structure that length shortens successively is set to from one group of flase floor assembly (15) of rotary shaft body (5) middle part to several groups of flase floor assemblies (15) in valve body right side wall (11) direction, flase floor assembly (15) near valve body left side wall (11) and the flase floor assembly (15) near valve body right side wall (13) are set to the shortest structure of length.
CN201510747251.0A 2015-11-06 2015-11-06 Pulverized coal concentration adjusting valve for coal mill of coal pulverizing system CN105251602A (en)

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CN201510747251.0A CN105251602A (en) 2015-11-06 2015-11-06 Pulverized coal concentration adjusting valve for coal mill of coal pulverizing system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106065952A (en) * 2016-07-26 2016-11-02 西安科瑞自动化有限责任公司 Single (double) wing coal dust throttling comb and device

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1710328A (en) * 2005-07-01 2005-12-21 煤炭科学研究总院北京煤化工研究分院 Medium and small sized industrial pulverized-coal fired boiler
KR100925997B1 (en) * 2002-12-24 2009-11-09 주식회사 포스코 Apparatus for controlling the quantity of air supplying to pulverizer mill
CN201603688U (en) * 2009-11-09 2010-10-13 孙家鼎 Self-rotation type pulverized coal separation distributor
CN203517857U (en) * 2013-07-05 2014-04-02 北京华清优燃科技有限公司 Rotation-speed-changeable rotary pulverized-coal distributor
CN103822224A (en) * 2014-03-13 2014-05-28 青岛立宇科技开发有限公司 Full automatic coal powder concentration regulator of coal grinder
CN203926836U (en) * 2014-05-28 2014-11-05 无锡市华通环保设备有限公司 Coal pulverizer goes out the balanced modulating valve of one's intention as revealed in what one says powder
CN204006097U (en) * 2014-03-13 2014-12-10 青岛立宇科技开发有限公司 Unit pulverized-coal system realizes the control system of coal dust uniform distribution
CN204026721U (en) * 2014-07-03 2014-12-17 烟台龙源电力技术股份有限公司 Coal dust classifier and pulverized-coal fired boiler
CN105003665A (en) * 2015-08-14 2015-10-28 北京华清茵蓝科技有限公司 Regulating valve for pulverized coal distribution as well as pulverized coal feed pipe and separator applying regulating valves
CN205164925U (en) * 2015-11-06 2016-04-20 浙江宜清环境技术有限公司 A coal powder concentration governing valve for powder process system coal pulverizer

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100925997B1 (en) * 2002-12-24 2009-11-09 주식회사 포스코 Apparatus for controlling the quantity of air supplying to pulverizer mill
CN1710328A (en) * 2005-07-01 2005-12-21 煤炭科学研究总院北京煤化工研究分院 Medium and small sized industrial pulverized-coal fired boiler
CN201603688U (en) * 2009-11-09 2010-10-13 孙家鼎 Self-rotation type pulverized coal separation distributor
CN203517857U (en) * 2013-07-05 2014-04-02 北京华清优燃科技有限公司 Rotation-speed-changeable rotary pulverized-coal distributor
CN103822224A (en) * 2014-03-13 2014-05-28 青岛立宇科技开发有限公司 Full automatic coal powder concentration regulator of coal grinder
CN204006097U (en) * 2014-03-13 2014-12-10 青岛立宇科技开发有限公司 Unit pulverized-coal system realizes the control system of coal dust uniform distribution
CN203926836U (en) * 2014-05-28 2014-11-05 无锡市华通环保设备有限公司 Coal pulverizer goes out the balanced modulating valve of one's intention as revealed in what one says powder
CN204026721U (en) * 2014-07-03 2014-12-17 烟台龙源电力技术股份有限公司 Coal dust classifier and pulverized-coal fired boiler
CN105003665A (en) * 2015-08-14 2015-10-28 北京华清茵蓝科技有限公司 Regulating valve for pulverized coal distribution as well as pulverized coal feed pipe and separator applying regulating valves
CN205164925U (en) * 2015-11-06 2016-04-20 浙江宜清环境技术有限公司 A coal powder concentration governing valve for powder process system coal pulverizer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106065952A (en) * 2016-07-26 2016-11-02 西安科瑞自动化有限责任公司 Single (double) wing coal dust throttling comb and device

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