CN2530737Y - Full automatic powdered coal sieve - Google Patents
Full automatic powdered coal sieve Download PDFInfo
- Publication number
- CN2530737Y CN2530737Y CN 02203512 CN02203512U CN2530737Y CN 2530737 Y CN2530737 Y CN 2530737Y CN 02203512 CN02203512 CN 02203512 CN 02203512 U CN02203512 U CN 02203512U CN 2530737 Y CN2530737 Y CN 2530737Y
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- fulcrum
- pulverized coal
- housing
- fixed
- sieve
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Abstract
The utility model relates to a full automatic powdered coal sieve. A powered coal inlet pipe is fixed at the upper part of a shell, and a powered coal outlet pipe is provided with a flow guide plate. A discharging pipe is connected with the lower part of the shell. The upper part of a supporting shaft is fixed by a bearing and the lower part of the supporting shaft is fixed by a bearing case, with a screen fixed on the supporting shaft close to the upper part of the shell and an inclined attacking plate fixed at the lower part of the supporting shaft through a wheel hub. The place of the top of the shell which extends out of the screen is fixed with a miscellany sucking device. Thanks to the arrangement of the flow guide plate at the inlet and the inclined attacking plate at the lower part of the supporting shaft, a second attacking force is automatically generated during the falling off of the powdered coal, which makes the screen revolve in the direction of the attacking force, with the miscellanies remaining on the screen and then sucked by the miscellany sucking device into a miscellany separating and storage case for cleaning at a fixed time.
Description
Affiliated technical field
The utility model belongs to pulverized coal preparation system field, power station, is specifically related to the full automatic pulverized coal sieve that the frequent manual cleanup impurity of operations staff was removed, be need not to impurity in a kind of coal dust that can continuously pulverized-coal collector be separated automatically.
Background technology
Pulverized coal sieve is one of key equipment in the bin storage type pulverizing system.As mentioned above, its function is that the coal dust that pulverized-coal collector separates is filtered, and removes fibrous matter such as wood fibre, rope fragment, burlap sheet, chemical fibre material and the wire etc. carried secretly in the coal dust, and to prevent upstream device, promptly machine supplying powder stops up.
Usually the source is many with coal in China power station, coal impurity content height, so the fibrous matter of carrying secretly in the coal dust is generally more.Before coal dust arrives machine supplying powder these impurity being removed is the key factor that guarantees machine supplying powder and even safe operation of the boiler.
In fact at present in the power station since these fibrous matters not the Ex-all accident that causes machine supplying powder to stop up to powder interrupts, corresponding burner stops working frequently take place, sometimes this clogging is not in time found, and betide many machine supplying powders simultaneously, will cause the major accident of boiler combustion shakiness even burner hearth fire extinguishing.
China power station adopts the situation of bin storage type pulverizing system more, especially 125MW, the unit of 200MW all adopts this pulverized coal preparation system basically, if the unit of 300MW and above grade use in, also generally adopt bin storage type pulverizing system during the low-volatile coal.The pulverized coal sieve that generally adopts at present in these pulverized coal preparation systems is continued to use the technology in the former Soviet Union five, the sixties, and the emerged in operation problem is many, and pulverized coal sieve itself is easy to blocked, influences the normal operation of whole pulverized coal preparation system.Operations staff's pulverized coal sieve of having to clear up continually, working strength is big, poor working environment.
Summary of the invention
The purpose of this utility model be for bin storage type pulverizing system provide a kind of fiber impurity in the coal dust can be removed clean, need not exterior power, that operational reliability is high and need not the operations staff frequently clear up the full automatic pulverized coal sieve that sieve is gone up impurity.
A kind of full automatic pulverized coal sieve, adopt coal powder entrance pipe 2 to be fixed on the top of housing 8, drainage conduit 19 is connected the bottom of housing 8, the top that it is characterized in that fulcrum is fixing by bearing 3, the bottom of fulcrum is fixing by bearing housing 16, sieve 9 is fixed near on the fulcrum on housing 8 tops, and oblique shock plate 13 is fixed on the bottom of fulcrum by wheel hub 14, stretches to sieve face place at the top of housing 8 and fixes a foreign material aspirator 10.In described coal powder entrance pipe 2, be furnished with the entrance guiding plate 17 of inclination.
Described fulcrum is made up of last fulcrum 4 and following fulcrum 15, and the top contact jaw of the bottom of last fulcrum 4 and following fulcrum 15 semi-circular cross-section of respectively doing for oneself meshes in wheel hub 14 mutually.
Described sieve 9 is fixed together with pivot pin and last fulcrum 4 for whole disk pulverized coal sieve.
Described foreign material aspirator 10 is flat bell mouth shape or the flat bell mouth shape that has certain water chestnut.
Have the coal dust kuppe 12 that is fixed on the fulcrum 4 on the top of described oblique shock plate 13, coal dust kuppe 12 usefulness pivot pins and last fulcrum 4 are fixed together.
Described oblique shock plate 13 usefulness bolts are connected with wheel hub 14, and oblique shock plate 13 is fixed on down on the fulcrum 15 by wheel hub 14.
Be fixed with foreign material suction blowdown pipe 11 below the compass screen surface corresponding with foreign material aspirator 10 in described housing 8, there is slit opening at the corresponding compass screen surface in blowdown pipe top place.On described housing 8 or leave housing 8 and be connected with foreign material aspirator 10 that foreign material separate and storage box 18.
The opposite side relative with coal powder entrance pipe 2 is provided with the rectangle manhole, the rectangle manhole seals with top rectangular manhole cover 6, connect by bolt between the two, rectangle manhole cover 6 centers are provided with emergent management hand hole door 5, housing 8 first halves one side is a Cylinder, and opposite side is a rectangular configuration, and the rectangular configuration end is provided with door closure, be the passage of disk pulverized coal sieve into and out of housing, the housing Lower Half is a cone.
The utlity model has following advantage:
1. under the effect of impulsive force, drive sieve and rotate in inlet position, the oblique impact sieve outer ring of coal dust owing to the entrance guiding plate makes along the impulsive force direction.
2. coal dust falls after by sieve elimination foreign material, and matchmaker's powder is impacting behind certain drop on the shock plate of oblique layout, produces secondary pulse power.The drop height is 100-400mm.The vertical component of impulsive force is born by the bearing housing that is arranged in the bottom, and the horizontal component of impulsive force then promotes the automatic rotation of sieve.
3. fall by pulverized coal sieve by gravity after falling on the pulverized coal sieve from the coal dust of inlet tube, foreign material are then stayed on the pulverized coal sieve.Because pulverized coal sieve is in continuously rotation, all foreign material finally all reach foreign material aspirator place and are pumped down in foreign material separation and the storage box.
4. because sieve can continuously rotate for the disk coal dust, cleaned out automatically by the pulverized coal sieve surface of foreign material aspirator, drop on the clean position of pulverized coal sieve all the time from the coal dust of inlet tube, screening process is successively unobstructed all the time.
Description of drawings
Embodiment of the present utility model is referring to figure below:
Fig. 1 is a half sectional view of the present utility model;
Fig. 2 is that the B-B of Fig. 1 is to view;
Fig. 3 is a vertical view of the present utility model;
Fig. 4 is that the C of foreign material storage box is to view.
Among the figure:
1---inlet tube, 2---the coal powder entrance pipe, 3---bearing (comprising the sealed packing seat), 4---go up fulcrum, 5---emergent management hand hole door, 6---the top rectangular manhole cover, 7---disk pulverized coal sieve installation and maintenance discrepancy flap, 8---housing, 9---sieve, 10---the foreign material aspirator, 11---the suction blowdown pipe, 12---the coal dust kuppe, 13---oblique shock plate, 14---wheel hub, 15---following fulcrum, 16---bearing housing, 17---the entrance guiding plate, 18---foreign material separate and storage box, 19---discharge pipe, 20---absorption tube, 21---negative pressure suction tube, 22---foreign material take out the hole.
The specific embodiment
At Fig. 1, among Fig. 2, adopt coal powder entrance pipe 2 to be fixed on the top of housing 8, drainage conduit 19 is connected the bottom of housing 8, for the ease of installing, fulcrum is divided into fulcrum 4 and following fulcrum 15, the top of last fulcrum 4 is fixing by bearing 3, the bottom of following fulcrum 15 is fixing by bearing housing 16, sieve 9 is fixed near on the last fulcrum 4 on housing 8 tops, sieve 9 is fixed together with pivot pin and fulcrum 4 for whole disk pulverized coal sieve, both do synchronous rotation during operation, and oblique shock plate 13 is fixed on down on the fulcrum 15 by wheel hub 14, last fulcrum 4 and the following fulcrum 15 contact jaws semi-circular cross-section of respectively doing for oneself, in wheel hub 14, be meshing with each other together, rotate synchronously during operation, stretch to sieve face place at the top of housing 8 and fix a foreign material aspirator 10, this device is flat bell mouth shape.Inlet tube 1 and discharge pipe 19 are the equipment that closely faces mutually of the present utility model, but are not included in the utility model scope.
Because the position, outer ring of the oblique impact sieve 9 of entrance guiding plate 17 feasible inlet coal dusts drives sieve 9 and rotates along the impulsive force direction under the effect of impulsive force.Coal dust falls after by disk pulverized coal sieve 9 elimination foreign material, and matchmaker's powder is impacting behind certain drop on the shock plate of oblique layout, produces secondary pulse power.The drop height is 100-400mm.The vertical component of impulsive force is born by the bearing housing 16 that is arranged in the bottom, and the horizontal component of impulsive force then promotes the rotation of disk pulverized coal sieve 9; The steady rotation speed of disk pulverized coal sieve 9 depends on the size of the frictional force that produces on the size of above-mentioned two impulsive forces and bearing and sealed packing seat 3 and the bearing housing 16.
Rectangle manhole cover 6 centers are provided with emergent management hand hole door 5, in emergency circumstances can open it easily inside is handled.
Coal dust kuppe 12 usefulness pivot pins and fulcrum 4 are fixed together, and the position is on wheel hub 14, and both do synchronous rotation during operation, the coal dust kuppe 12 feasible outsides that are directed to oblique shock plate 13 from the fallen coal dust of pulverized coal sieve inner ring.
Wheel hub 14 and following fulcrum 15 link together by pivot pin, rotate synchronously during operation.Have the fixed head of 9-12 oblique shock plate on the wheel hub 14, the angle of inclination is a 30-60 ° of scope, and 9-12 piece shock plate is connected with wheel hub 14 with bolt, is convenient to change after the shock plate wearing and tearing.
In Fig. 2, Fig. 3, housing 8 first halves one side is a Cylinder, and opposite side is a rectangular configuration, and the rectangular configuration end is provided with door closure, is the passage of disk pulverized coal sieve into and out of housing; The housing Lower Half is a cone.Housing 8 top eccentric positions are equipped with coal powder entrance pipe 2, the center is equipped with bearing and sealed packing seat 3, and there is disk pulverized coal sieve fulcrum 4 therefrom to pass, the opposite side relative with coal powder entrance pipe 2 is provided with the rectangle manhole, the rectangle manhole connects by bolt between the two with 6 sealings of top rectangular manhole cover.
Foreign material aspirator 10 is installed on the axial line of housing, this foreign material aspirator 10 is flat horn mouth or the flat horn mouth that has water chestnut, be used for the foreign material on the pulverized coal sieve are pumped out, fall by pulverized coal sieve by gravity after falling on the pulverized coal sieve from the coal dust of inlet tube 2, foreign material are then stayed on the pulverized coal sieve, cause that with absorption tube 20 foreign material that are arranged in next door or other position separate and storage box 18 then, because pulverized coal sieve is in continuously rotation, all foreign material finally all reach foreign material aspirate flat horn mouth 10 places and be pumped down to that foreign material separate and storage box 18 in.The present embodiment foreign material separate and storage box 18 is installed on case top, foreign material that pump out from housing and air-flow tangentially enter from absorption tube 20, through rotational flow separation, foreign material fall to the bottom, Jie Jing gas is drawn (as shown in Figure 4) from top blast pipe 21 relatively, and near the negative pressure system causing.
In order better to absorb foreign material, below pulverized coal sieve, aspirate flat horn mouth 10 relative positions foreign material suction blowdown pipe 11 is installed with foreign material, slit opening is arranged at blowdown pipe top, from extraneous inhaled air the foreign material above the pulverized coal sieve 9 is kicked up, and is convenient to foreign material and aspirates flat horn mouth 10 with its suction totally.
Aspirate flat bell-mouthed pulverized coal sieve surface by foreign material and cleaned out automatically, continue to rotate to the powder place when it and begin to filter the coal dust that contains foreign material again, the filter process of pulverized coal sieve is successive.
The foreign material that foreign material separate and storage box is interior run up to a certain degree back by artificial removing.Need not to open top emergency under the normal operation and handle directly labor cleaning's foreign material on pulverized coal sieve of hand hole door, the manually frequently foreign material work of cleaning pulverized coal sieve when having avoided traditional pulverized coal sieve to move.
Claims (10)
1. full automatic pulverized coal sieve, adopt coal powder entrance pipe (2) to be fixed on the top of housing (8), drainage conduit (19) is connected the bottom of housing (8), the top that it is characterized in that fulcrum is fixing by bearing (3), the bottom of fulcrum is fixing by bearing housing (16), sieve (9) is fixed near on the fulcrum on housing (8) top, and oblique shock plate (13) is fixed on the bottom of fulcrum by wheel hub (14), stretches to sieve face place at the top of housing (8) and fixes a foreign material aspirator (10).
2. full automatic pulverized coal sieve according to claim 1 is characterized in that being furnished with the entrance guiding plate (17) of inclination in described coal powder entrance pipe (2).
3. full automatic pulverized coal sieve according to claim 1 and 2, it is characterized in that described fulcrum is made up of last fulcrum (4) and following fulcrum (15), the top contact jaw of the bottom of last fulcrum (4) and following fulcrum (15) semi-circular cross-section of respectively doing for oneself meshes in wheel hub (14) mutually.
4. full automatic pulverized coal sieve according to claim 3 is characterized in that described sieve (9) is fixed together with pivot pin and last fulcrum (4) for whole disk pulverized coal sieve.
5. full automatic pulverized coal sieve according to claim 3 is characterized in that described foreign material aspirator (10) is flat bell mouth shape or the flat bell mouth shape that has certain water chestnut.
6. full automatic pulverized coal sieve according to claim 1 and 2, it is characterized in that having the coal dust kuppe (12) that is fixed on the fulcrum (4) on the top of described oblique shock plate (13), coal dust kuppe (12) is fixed together with pivot pin and last fulcrum (4).
7. full automatic pulverized coal sieve according to claim 6 is characterized in that described oblique shock plate (13) is connected with wheel hub (14) with bolt, and oblique shock plate (13) is fixed on down on the fulcrum (15) by wheel hub (14).
8. full automatic pulverized coal sieve according to claim 1 and 2 is characterized in that being fixed with foreign material suction blowdown pipe (11) below the compass screen surface corresponding with foreign material aspirator (10) in described housing (8), and there is slit opening at the corresponding compass screen surface in blowdown pipe top place.
9. full automatic pulverized coal sieve according to claim 8 is characterized in that going up or leave housing (8) at described housing (8) is connected with foreign material aspirator (10) that foreign material separate and storage box (18).
10. full automatic pulverized coal sieve according to claim 1 and 2, it is characterized in that the opposite side relative with coal powder entrance pipe (2) is provided with the rectangle manhole, the rectangle manhole seals with top rectangular manhole cover (6), connect by bolt between the two, rectangle manhole cover (6) center is provided with emergent management hand hole door (5), housing (8) first half one side is a Cylinder, opposite side is a rectangular configuration, the rectangular configuration end is provided with door closure, be the passage of disk pulverized coal sieve into and out of housing, the housing Lower Half is a cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02203512 CN2530737Y (en) | 2002-02-08 | 2002-02-08 | Full automatic powdered coal sieve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02203512 CN2530737Y (en) | 2002-02-08 | 2002-02-08 | Full automatic powdered coal sieve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2530737Y true CN2530737Y (en) | 2003-01-15 |
Family
ID=33685667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02203512 Expired - Fee Related CN2530737Y (en) | 2002-02-08 | 2002-02-08 | Full automatic powdered coal sieve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2530737Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102849466A (en) * | 2012-09-03 | 2013-01-02 | 孙家鼎 | Mesh screen cleaning device |
| CN105944952A (en) * | 2016-06-30 | 2016-09-21 | 重庆浩立塑胶有限公司 | Particle material feeding and screening device |
| CN108114648A (en) * | 2017-12-26 | 2018-06-05 | 共同科技开发有限公司 | A kind of rocking type Blendling-device of feedstuffs |
-
2002
- 2002-02-08 CN CN 02203512 patent/CN2530737Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102849466A (en) * | 2012-09-03 | 2013-01-02 | 孙家鼎 | Mesh screen cleaning device |
| CN105944952A (en) * | 2016-06-30 | 2016-09-21 | 重庆浩立塑胶有限公司 | Particle material feeding and screening device |
| CN108114648A (en) * | 2017-12-26 | 2018-06-05 | 共同科技开发有限公司 | A kind of rocking type Blendling-device of feedstuffs |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |