CN203108620U - Material anti-clogging device of ball mill feed hopper - Google Patents
Material anti-clogging device of ball mill feed hopper Download PDFInfo
- Publication number
- CN203108620U CN203108620U CN 201220740248 CN201220740248U CN203108620U CN 203108620 U CN203108620 U CN 203108620U CN 201220740248 CN201220740248 CN 201220740248 CN 201220740248 U CN201220740248 U CN 201220740248U CN 203108620 U CN203108620 U CN 203108620U
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- China
- Prior art keywords
- feed hopper
- coal pulverizer
- coal
- air pipe
- warm
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Abstract
The utility model discloses a material anti-clogging device of a ball mill feed hopper. The material anti-clogging device of the ball mill feed hopper comprises a coal mill feed hopper which is arranged at the inlet end of the coal mill, wherein the coal mill feed hopper is a straight pipe with a conical surface at the bottom; the upper port of the coal mill feed hopper is vertically connected with a coal mill inlet air pipe; the top of the coal mill inlet air pipe is vertically connected with a coal feeding pipe; the side wall of the coal mill inlet air pipe is communicated with an air pipe; and a reamer is arranged between the coal mill inlet end and the coal mill feed hopper. By shortening the coal mill feed hopper, the raw coal can fall to the inlet side of the coal mill smoothly, so that the working efficiency is improved, and the cost is reduced.
Description
Technical field
The utility model relates to power plant's ball mill feed hopper, relates in particular to a kind of ball mill feed hopper material preventing clogging up device.
Background technology
Power plant's ball mill is actual at present differs bigger with coal and design coal quality, does not reach the water content requirement of design coal.Under the normal condition, the ordinary water that is called of coal surface moisture M1≤8% divides coal, and the ball mill design coal mostly is ordinary water and divides coal.When ordinary water divides coal to enter feed hopper via coal spout, better mobile, be difficult for taking place the chute blockage phenomenon.The superelevation moisture coal of the hydrogenous coal of surface moisture 8%≤M1≤12%, surface moisture M1 〉=12 enters feed hopper by coal spout, because coal dust humidity is bigger, mobile relatively poor, coal dust very easily adheres in pipeline, form clad in tube wall, along with long mass transport, clad is more and more thicker, until producing clogging, make the equipment can't operate as normal.
The coal pulverizer chute blockage is one of pulverized coal preparation system common abnormal, and chute blockage is all influential to boiler combustion, steam temperature, vapour pressure, and coal pulverizer is forced to greatly stop transport because chute blockage can cause body vibration, and may cause security incident, and is serious even can cause explosion of Coal Pulverizing System.
Original ball mill feed hopper is taked structure shown in Fig. 1 dotted line, the warm-air pipe 3 of this feed hopper is 90 ° of bend pipe structures, and the pipeline section of raw coal coal unloading tube 2 is obliquely installed in warm-air pipe bend pipe segmental arc, be provided with the inclination pipeline section at former coal pulverizer entrance warm-air pipe 5 lower tube sections, thereby cause raw coal in the obstruction of this inclination pipeline section easily.
At present, the solution for the coal pulverizer blockage problem has these several: 1. make the ball mill antiport earlier, make that the material caking is destroyed, the running of forward again when material is got back to hopper.2. knock hopper with hand hammer, behind the position that judgement is stopped up according to sound, knock obstruction place with sledgehammer again, the material caking shake of obstruction place is opened.
These 2 kinds of methods can solve blockage problem sometimes, but must be could keep in repair when coal pulverizer quits work, and have reduced operating efficiency, and unreliable.
The utility model content
In order to solve the problem of coal pulverizer chute blockage, the purpose of this utility model provides a kind of ball mill feed hopper material preventing clogging up device, this device can guarantee to drop down onto the coal pulverizer entrance side smoothly when raw coal falls by having shortened the feed hopper of coal pulverizer, has improved operating efficiency, has reduced cost.
The purpose of this utility model realizes by following technical proposals.
A kind of ball mill feed hopper material preventing clogging up device, comprise the coal pulverizer feed hopper that is arranged at the coal pulverizer arrival end, described coal pulverizer feed hopper is the straight length that the bottom is provided with the conical surface, along the vertical coal pulverizer entrance warm-air pipe that connects of described coal pulverizer feed hopper upper port, the vertical coal unloading tube that connects in described coal pulverizer entrance warm-air pipe top; Be communicated with a warm-air pipe along described coal pulverizer entrance warm-air pipe sidewall; Be provided with a reamer between described coal pulverizer arrival end and the coal pulverizer feed hopper.
Further, the described warm-air pipe linkage section that is communicated with coal pulverizer entrance warm-air pipe sidewall arranges along coal pulverizer entrance warm-air pipe sidewall slope.
Further, described coal unloading tube caliber is less than the caliber of coal pulverizer entrance warm-air pipe.
Further, described reamer is that two ends, leg-of-mutton base are connected on the coal pulverizer entrance madial wall by the isosceles triangular structure of round steel processing, and a leg-of-mutton hypotenuse parallels setting with the coal pulverizer feed hopper bottom conical surface.
Further, the diameter of described round steel is 16 ~ 18 millimeters of Φ.
Further, hypotenuse of described reamer cutter hub and coal pulverizer feed hopper bottom conical surface inwall is provided with the gap.
Compared with prior art, the beneficial effects of the utility model are:
1. shorten the coal pulverizer feed hopper, do not contact the inwall of warm-air pipe when falling to guarantee raw coal, can drop down onto the coal pulverizer entrance side smoothly.
2. at the coal pulverizer entrance one reamer is installed, and can be rotated together with the coal pulverizer cylinder, with the chute blockage in the 45 ° of elliptical tubes of entrance that loosen at any time.
The utility model fundamentally prevents the blockage problem of coal pulverizer feed hopper, even it is higher to contain moisture because of raw coal, drying plant is incomplete, can carry out coal-grinding work yet, has improved operating efficiency, has reduced cost.
Description of drawings
Fig. 1 is that coal pulverizer anti-clogging of the present utility model improves schematic diagram.
Among the figure: the 1-coal unloading tube; Former coal unloading tube before 2-improves; The 3-warm-air pipe; 4-coal pulverizer entrance warm-air pipe; Former coal pulverizer entrance warm-air pipe before 5-improves; 6-taper short tube; The 7-reamer; 8-reamer fixing point; The 9-coal pulverizer; 10-coal pulverizer feed hopper; 11-coal pulverizer inlet seal short circuit flange.
The specific embodiment
Below in conjunction with specific embodiment the utility model is described in further details.
As shown in Figure 1, this ball mill feed hopper material preventing clogging up device, comprise the coal pulverizer feed hopper 10 that is arranged at coal pulverizer 9 arrival ends, coal pulverizer feed hopper 10 is provided with the straight length of the conical surface for the bottom, along the vertical coal pulverizer entrance warm-air pipe 4 that connects of coal pulverizer feed hopper 10 upper port, the vertical coal unloading tube 1 that connects in coal pulverizer entrance warm-air pipe 4 tops; Be communicated with a warm-air pipe 3 along coal pulverizer entrance warm-air pipe 4 sidewalls; Be connected with a reamer 7 by taper short tube 6 between coal pulverizer 9 arrival ends and the coal pulverizer feed hopper 10, wherein, warm-air pipe 3 linkage sections that are communicated with coal pulverizer entrance warm-air pipe 4 sidewalls are along the 4 sidewall slope settings of coal pulverizer entrance warm-air pipe.And coal unloading tube 1 caliber is less than coal pulverizer entrance warm-air pipe 4 calibers.
Above-mentioned reamer 7 is that two ends, leg-of-mutton base are connected on the coal pulverizer 9 entrance madial walls by the isosceles triangular structure of round steel processing, and a leg-of-mutton hypotenuse parallels setting with the coal pulverizer feed hopper 10 bottom conical surfaces.The diameter of round steel is 16 ~ 18 millimeters of Φ, and reamer 7 cutter hubs and coal pulverizer feed hopper 10 bottom conical surface inwalls are provided with gap b.
The fixing point of reamer shown in Fig. 18 is the fixing point that reamer 7 connects taper short tube 6, and coal pulverizer inlet seal short circuit flange 11 joins coal pulverizer feed hopper 10 and coal pulverizer 9 entrances.
Principle of the present utility model is:
1. shorten 45 ° of feed hoppers of coal pulverizer entrance, coal pulverizer entrance warm-air pipe 5 is shifted to the coal pulverizer entrance, (the distance of do the best shortening heat airduct 4 centers and coal pulverizer inlet seal short circuit flange 11 end faces, get final product to guarantee wearing nut), the close coal-grinding pusher side at this section warm-air pipe top, installing exports the rectangle coal unloading tube section 1 that adapts with feeder, the oblique coal that is lowered to changes into and goes into coal straight down before will transforming, to guarantee that raw coal does not contact the inwall of warm-air pipe 4 when falling, can drop down onto the coal pulverizer entrance side smoothly.
2. at the coal pulverizer entrance one reamer 7 is installed, and can be rotated together with the coal pulverizer cylinder, to strike off the coal that the feed hopper waist accumulates at any time.When reamer was installed, the size of press coal pulverizer entrance diffusing opening was earlier made taper short tube 6 with the steel plate of 5 ~ 6 millimeters thick, packed in the coal pulverizer entrance with suitable tightly power, welded with the coal pulverizer bucket wall 10 that has cut in advance in the end socket steel first breach.Reamer uses 16 ~ 18 millimeters round steel of Φ to make (shape is seen figure), its parallel lines partial-length, need decide on fixing reamer, V-type partly is to deduct the length of 2b with coal pulverizer entrance broken end internal control diameter to be the base of its isosceles triangle, 45 ° of oblique angles with coal pulverizer entrance elliptical tube are the base angle, and determined isosceles triangle two waists are made.Note keeping cutter hub and coal pulverizer feed hopper inwall gap b, with the both ends balanced welding of cutter straight line portion on the taper short tube.With the fixing reamer of such method, reliability height, difficult drop-off.
Above content is to further describing that the utility model is done in conjunction with concrete preferred embodiment; can not assert that the specific embodiment of the present utility model only limits to this; for the utility model person of an ordinary skill in the technical field; under the prerequisite that does not break away from the utility model design; can also make some simple deduction or replace, all should be considered as belonging to the utility model and determine scope of patent protection by claims of submitting to.
Claims (6)
1. ball mill feed hopper material preventing clogging up device, comprise the coal pulverizer feed hopper (10) that is arranged at coal pulverizer (9) arrival end, it is characterized in that, described coal pulverizer feed hopper (10) is provided with the straight length of the conical surface for the bottom, vertically connect a coal pulverizer entrance warm-air pipe (4) along described coal pulverizer feed hopper (10) upper port, described coal pulverizer entrance warm-air pipe (4) top vertically connects a coal unloading tube (1); Be communicated with a warm-air pipe (3) along described coal pulverizer entrance warm-air pipe (4) sidewall; Be provided with a reamer (7) between described coal pulverizer (9) arrival end and the coal pulverizer feed hopper (10).
2. ball mill feed hopper material preventing clogging up device according to claim 1 is characterized in that, described warm-air pipe (3) linkage section that is communicated with coal pulverizer entrance warm-air pipe (4) sidewall is along coal pulverizer entrance warm-air pipe (4) sidewall slope setting.
3. ball mill feed hopper material preventing clogging up device according to claim 1 is characterized in that, described coal unloading tube (1) caliber is less than the caliber of coal pulverizer entrance warm-air pipe (4).
4. ball mill feed hopper material preventing clogging up device according to claim 1, it is characterized in that, described reamer (7) is the isosceles triangular structure by round steel processing, two ends, leg-of-mutton base are connected on coal pulverizer (9) the entrance madial wall, and a leg-of-mutton hypotenuse parallels setting with coal pulverizer feed hopper (10) the bottom conical surface.
5. ball mill feed hopper material preventing clogging up device according to claim 4 is characterized in that, the diameter of described round steel is 16 ~ 18 millimeters of Φ.
6. ball mill feed hopper material preventing clogging up device according to claim 4 is characterized in that, hypotenuse of described reamer (7) cutter hub and coal pulverizer feed hopper (10) bottom conical surface inwall are provided with the gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220740248 CN203108620U (en) | 2012-12-28 | 2012-12-28 | Material anti-clogging device of ball mill feed hopper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220740248 CN203108620U (en) | 2012-12-28 | 2012-12-28 | Material anti-clogging device of ball mill feed hopper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203108620U true CN203108620U (en) | 2013-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220740248 Expired - Fee Related CN203108620U (en) | 2012-12-28 | 2012-12-28 | Material anti-clogging device of ball mill feed hopper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203108620U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107876159A (en) * | 2017-11-14 | 2018-04-06 | 张前 | A kind of anti-blocking feed opening of ball mill |
-
2012
- 2012-12-28 CN CN 201220740248 patent/CN203108620U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107876159A (en) * | 2017-11-14 | 2018-04-06 | 张前 | A kind of anti-blocking feed opening of ball mill |
| CN107876159B (en) * | 2017-11-14 | 2019-04-30 | 江苏新达石英有限公司 | A kind of anti-blocking feed opening of ball mill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20151228 |
|
| EXPY | Termination of patent right or utility model |