CN103551223A - Roller type medium-speed coal grinder - Google Patents

Roller type medium-speed coal grinder Download PDF

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Publication number
CN103551223A
CN103551223A CN201310524600.3A CN201310524600A CN103551223A CN 103551223 A CN103551223 A CN 103551223A CN 201310524600 A CN201310524600 A CN 201310524600A CN 103551223 A CN103551223 A CN 103551223A
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CN
China
Prior art keywords
grinding roller
grinding
hydraulic cylinder
mill
hinged
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201310524600.3A
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Chinese (zh)
Inventor
贾东亮
尚庆雨
纪任山
刘建航
梁兴
张鑫
肖翠微
李婷
苗鹏
周沛然
宋春燕
于清航
徐大宝
王永英
刘振宇
杨晋芳
张旭芳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Coal Research Institute CCRI
Original Assignee
China Coal Research Institute CCRI
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Coal Research Institute CCRI filed Critical China Coal Research Institute CCRI
Priority to CN201310524600.3A priority Critical patent/CN103551223A/en
Publication of CN103551223A publication Critical patent/CN103551223A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a roller type medium-speed coal grinder. The roller type medium-speed coal grinder comprises a driving motor, a coupling, a speed reducer, a rotary disc, a grinding disc, a grinding roller, a shell, a hot-air nozzle ring and multi-connecting-rod loading mechanisms, wherein the driving motor is arranged on a foundation; the coupling is rotatably connected with an output shaft of the driving motor; the speed reducer is rotatably connected with an output shaft of the coupling; the rotating disc is fastened and connected with the output end of the speed reducer; the grinding disc is fastened and connected with the upper end of the rotating disc; the grinding roller is arranged on the grinding disc; the rotating disc and the grinding disc are sheathed in the shell; the hot-air nozzle ring is arranged on the outer side along the circumferential direction of the grinding disc; the multi-connecting-rod loading mechanisms are arranged in the middle of the shell. Each multi-connecting-rod loading mechanism comprises a maintenance door arranged in the middle of the shell, a maintenance hydraulic cylinder, a loading hydraulic cylinder inserted on the maintenance door, a connecting rod hinged with the tail end of a piston connecting rod of the loading hydraulic cylinder and a grinding roller shaft hinged with a base arranged at the lower part of the maintenance door, wherein one end of the maintenance hydraulic cylinder is hinged with a base arranged on the foundation, and the other end of the maintenance hydraulic cylinder is hinged with a base arranged at the upper part of the outer wall of the maintenance door; one end, which is connected with the grinding roller, of the grinding roller shaft is hinged with the tail end of the connecting rod along the radial direction; the tail end of the grinding roller shaft is rotatably connected with the grinding roller.

Description

A kind of roller medium speed coal mill
Technical field
The present invention relates to a kind of pulverizing equipment, particularly about a kind of Novel roller type medium-speed pulverizer.
Background technology
At present, the coal pulverizer using in places such as large power plants generally comprises a frame, one is arranged on the drive motor of frame lower, one connects the reductor of drive motors, one is positioned at the rotary grinding disk of reductor top, one is pressed in the grinding roller on mill, one is connected to the loading frame of grinding roller top, one is fixed on the load cylinder on basis, one is connected to the pull bar between oil cylinder and loading frame, an oil cylinder oil supply system being formed by fuel tank, oil pipe, oil pump etc. and a raw coal enter the eliminating passage with coal dust.
Existing coal pulverizer is directly to grinding roller, to apply loading force by load cylinder, first by the downward pulling force of load cylinder, puts on loading frame, and then loading frame Compress Spring makes its compression grinding roller reach the effect that applies loading force.Although this loading form is simple in structure, because the volume of loading frame is larger, cause coal pulverizer upper space relatively narrow and small, so hot blast is through the out-of-date flow field that affects hot blast, thereby hindered coal pulverizer, grinds low-moisture coal dust.In addition, above-mentioned loading form maintenance inconvenience, when needs overhaul coal pulverizer inside and grinding roller bull ring thereof, because coal pulverizer inner space is narrow and small, causes maintenance to have difficulties.
Summary of the invention
For the problems referred to above, the object of this invention is to provide a kind of Novel roller type medium-speed pulverizer that does not affect hot blast flow field, easy access.
For achieving the above object, the present invention takes following technical scheme: a kind of roller medium speed coal mill, it comprises that one is arranged on the drive motors on ground, one is rotationally connected the shaft coupling of described drive motors output shaft, one is rotationally connected the decelerator of described shaft coupling output shaft, one is fastenedly connected the rolling disc of described decelerator output, one is fastenedly connected the mill of described rolling disc upper end, some grinding rollers that are arranged on described mill, one is sleeved on the housing of described rolling disc and mill outside, one along described mill be circumferentially arranged on its outside hot-blast spray nozzle ring, it is characterized in that, it also comprises some many connecting rods load maintainers that are arranged on described housing middle part, described in each, many connecting rods load maintainer includes an access door that is opened in described housing middle part, one one end is articulated with the base being arranged on described ground, the other end is articulated with the maintenance hydraulic cylinder that is arranged on described access door outer wall upper base, one is plugged in the loading hydraulic cylinder on described access door, the connecting rod of the piston rod end of one hinged described loading hydraulic cylinder, the one hinged shaft of grinding roller that is arranged on described access door bottom base, one end that described shaft of grinding roller is connected with described grinding roller is the end of hinged described connecting rod radially, described grinding roller the tip of the axis is rotationally connected described grinding roller.
Described mill equal intervals arranges three described grinding rollers, the described many connecting rods load maintainer of described housing middle part spaced set three cover.
The present invention is owing to taking above technical scheme, it has the following advantages: what 1, the present invention adopted is many connecting rods load maintainer, many connecting rods load maintainer only has loading hydraulic cylinder, shaft of grinding roller and connecting rod in coal pulverizer inside, removed huge loading frame, therefore effectively reduced load maintainer in the inner shared space of coal pulverizer, reduce the impact on coal pulverizer internal heat wind flow field, improved the quality of coal dust.In addition, can also reduce the difficulty of maintenance, reduce maintainer, shorten the repair time.2, the present invention can be widely used in the pulverized coal preparation technique in the places such as power station, Industrial Boiler, and applicability is strong.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention
Fig. 2 is grinding roller distribution schematic diagram of the present invention
The principle schematic of many connecting rods load maintainer when Fig. 3 is duty of the present invention
The principle schematic of many connecting rods load maintainer when Fig. 4 is inspecting state of the present invention
The specific embodiment
Below in conjunction with drawings and Examples, to of the present invention, be described in detail.
As shown in Figure 1, the present invention includes a drive motors 1, a shaft coupling 2, one speed reducer 3, a rolling disc 4, a mill 5, some grinding rollers 6, some many connecting rods load maintainers 7, a housing 8 and a hot-blast spray nozzle ring 9.Wherein, drive motors 1 is fixedly mounted on ground, the output shaft of drive motors 1 is through the input of shaft coupling 2 connection reducers 3, the output of decelerator 3 adopts screw fastening to connect the bottom of horizontally disposed rolling disc 4, the top of rolling disc 4 is fastenedly connected mill 5, and grinding roller 6 passes through corresponding many connecting rods load maintainer 7 along the circumferential spaced set of mill 5.Many connecting rods load maintainer 7 is set in qually spaced in the middle part of housing 8, the large little tubbiness housing 8 of tripe of mouth is sleeved on the outside of rolling disc 4 and mill 5, hot-blast spray nozzle ring 9 is along being circumferentially arranged on mill 5 outsides, by hot-blast spray nozzle ring 9 by the hot blast of sending into by drying medium entrance in nozzle ring 9 is sent into housing 8, what the coal dust grinding was mixed with gas powder blowing out along shell body inner side.
As shown in Figure 2, in a preferred embodiment, mill 5 equal intervals of the present invention arrange three grinding rollers 6, and each grinding roller 6 correspondence arranges a set of many connecting rods load maintainer 7.
The structure of three cover many connecting rods load maintainers 7 is identical, therefore only take a set of many connecting rods load maintainer 7, describes in detail as example.
As shown in Figure 1, Figure 3, many connecting rods load maintainer 7 comprises a maintenance hydraulic cylinder 70, an access door 71, a loading hydraulic cylinder 72, a connecting rod 73 and a shaft of grinding roller 74.Access door 71 is opened in the middle part of housing 8, the hinged base being arranged on ground in one end of maintenance hydraulic cylinder 70, the hinged base that is arranged on access door 71 outer wall tops of the other end.Loading hydraulic cylinder 72 levels are plugged on access door 71, the end of loading hydraulic cylinder 72 piston rods is by one end of a bearing pin articulated linkage 73, the other end of connecting rod 73 is by one end of the hinged shaft of grinding roller 74 of another bearing pin, the hinged base that is arranged on access door 71 inwalls of the other end of shaft of grinding roller 74, the end of shaft of grinding roller 74 is rotationally connected grinding roller 6.
Introduce in detail use flow process of the present invention below:
When the present invention works, start drive motors 1, drive motors 1 drives decelerator 3 work by shaft coupling 2, decelerator 3 is by rotating disk 4 band movable grinding disc 5 rotations, start maintenance hydraulic cylinder 70 and make access door 71 closures, now loading hydraulic cylinder 72 is in contraction state, and grinding roller 6 lifts, between grinding roller 6 and mill 5, have certain interval, the raw coal adding falls in the gap between grinding roller 6 and mill 5; Then start-up loading hydraulic cylinder 72, the piston rod of the loading hydraulic cylinder 72 in contraction state is stretched out, piston rod drives shaft of grinding roller 74 to rotate counterclockwise, shaft of grinding roller 74 drives grinding roller 6 to decline, the mill 5 now rotating drives grinding roller 6 around shaft of grinding roller 74 rotations by frictional force, the gravity of grinding roller 6 and the frictional force of the rotation raw coal of milling.When loading hydraulic cylinder 72 piston retraction go out, piston rod drives shaft of grinding roller 74 to clockwise rotate, and shaft of grinding roller 74 drives grinding roller 6 to lift, and raw coal continues to enter in the groove of mill 5.The form that the coal dust grinding mixes with gas powder blows out along shell body 8 inner sides by hot-blast spray nozzle ring 9.
When coal pulverizer need to overhaul, close drive motors 1, slowly shrink loading hydraulic cylinder 70, grinding roller 6 is lifted, shrink maintenance hydraulic cylinder 70 access door 71 is slowly opened, finally make the axle center of shaft of grinding roller 74 become plumbness (as shown in Figure 4) with horizontal plane, coal pulverizer enters inspecting state.
The various embodiments described above are only for illustrating the present invention; wherein the structure of each parts, connected mode and manufacture craft etc. all can change to some extent; every equivalents of carrying out on the basis of technical solution of the present invention and improvement, all should not get rid of outside protection scope of the present invention.

Claims (2)

1. a roller medium speed coal mill, it comprises that one is arranged on the drive motors on ground,
One is rotationally connected the shaft coupling of described drive motors output shaft,
One is rotationally connected the decelerator of described shaft coupling output shaft,
One is fastenedly connected the rolling disc of described decelerator output,
One is fastenedly connected the mill of described rolling disc upper end,
Some grinding rollers that are arranged on described mill,
One is sleeved on the housing of described rolling disc and mill outside,
One along described mill be circumferentially arranged on its outside hot-blast spray nozzle ring, it is characterized in that, it also comprises some many connecting rods load maintainers that are arranged on described housing middle part, described in each, many connecting rods load maintainer includes an access door that is opened in described housing middle part, one one end is articulated with the base being arranged on described ground, the other end is articulated with the maintenance hydraulic cylinder that is arranged on described access door outer wall upper base, one is plugged in the loading hydraulic cylinder on described access door, the connecting rod of the piston rod end of one hinged described loading hydraulic cylinder, the one hinged shaft of grinding roller that is arranged on described access door bottom base, one end that described shaft of grinding roller is connected with described grinding roller is the end of hinged described connecting rod radially, described grinding roller the tip of the axis is rotationally connected described grinding roller.
2. a kind of roller medium speed coal mill as claimed in claim 1, is characterized in that, described mill equal intervals arranges three described grinding rollers, the described many connecting rods load maintainer of described housing middle part spaced set three cover.
CN201310524600.3A 2013-10-30 2013-10-30 Roller type medium-speed coal grinder Pending CN103551223A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310524600.3A CN103551223A (en) 2013-10-30 2013-10-30 Roller type medium-speed coal grinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310524600.3A CN103551223A (en) 2013-10-30 2013-10-30 Roller type medium-speed coal grinder

Publications (1)

Publication Number Publication Date
CN103551223A true CN103551223A (en) 2014-02-05

Family

ID=50005676

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310524600.3A Pending CN103551223A (en) 2013-10-30 2013-10-30 Roller type medium-speed coal grinder

Country Status (1)

Country Link
CN (1) CN103551223A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106269195A (en) * 2016-09-28 2017-01-04 张家口煜达电力科技有限公司 Medium-speed pulverizer stagewise rotary wind ring

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101723570A (en) * 2009-12-18 2010-06-09 浙江大学 Sludge treatment method for drying sludge by using coal grinding machine and using sludge for electricity generation
CN202516622U (en) * 2012-03-23 2012-11-07 长春发电设备总厂 Maintenance turning-inside-out device for medium speed wheel-type coal milling machine grinding roller
CN102909114A (en) * 2012-09-11 2013-02-06 新兴能源装备股份有限公司 Vertical type mineral powder dry mill
CN202893429U (en) * 2012-11-16 2013-04-24 郑州维科重工机械有限公司 Auxiliary supporting device between grinding roll of flour mill and star rack
CN202951524U (en) * 2012-11-22 2013-05-29 安徽海螺川崎节能设备制造有限公司 Vertical mill for grinding

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101723570A (en) * 2009-12-18 2010-06-09 浙江大学 Sludge treatment method for drying sludge by using coal grinding machine and using sludge for electricity generation
CN202516622U (en) * 2012-03-23 2012-11-07 长春发电设备总厂 Maintenance turning-inside-out device for medium speed wheel-type coal milling machine grinding roller
CN102909114A (en) * 2012-09-11 2013-02-06 新兴能源装备股份有限公司 Vertical type mineral powder dry mill
CN202893429U (en) * 2012-11-16 2013-04-24 郑州维科重工机械有限公司 Auxiliary supporting device between grinding roll of flour mill and star rack
CN202951524U (en) * 2012-11-22 2013-05-29 安徽海螺川崎节能设备制造有限公司 Vertical mill for grinding

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106269195A (en) * 2016-09-28 2017-01-04 张家口煜达电力科技有限公司 Medium-speed pulverizer stagewise rotary wind ring

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Owner name: CHINA COAL RESEARCH INSTITUTE CO., LTD.

Free format text: FORMER OWNER: COAL GENERAL ACADEMY

Effective date: 20140623

C41 Transfer of patent application or patent right or utility model
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Effective date of registration: 20140623

Address after: 100013 Chaoyang District, Hepingli Youth Ditch Road, No. 5, No.

Applicant after: Co., Ltd of coal science and technology academy

Address before: 100013 Chaoyang District, Hepingli Youth Ditch Road, No. 5, No.

Applicant before: General Research Institute of Coal Science

RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20140205