CN202561788U

CN202561788U - Combined combustion coal supply device in front of chain boiler furnace

Info

Publication number: CN202561788U
Application number: CN201220206671XU
Authority: CN
Inventors: 陈永; 艾晓宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-27
Filing date: 2012-04-27
Publication date: 2012-11-28
Anticipated expiration: 2022-04-27

Abstract

The utility model relates to a combined combustion coal supply device in the front of a chain boiler furnace. The combined combustion coal supply device comprises a coal chamber, a coal damper lifting device, a coal stopping board I, a coal feeding roller, a coal transmission connecting pipe, a coal pulverizer, a spiral conveyor, a front arch and a fire grate. The combined combustion coal supply device is characterized in that a multilayer sieve is arranged on a middle section of the coal chamber, and is located above a fine coal chamber; the spiral conveyor I is arranged inside a half circle above the bottom of the thin coal chamber; a spiral conveyor II is arranged between the front arch and the spiral conveyor I; a coal transmission pipeline is arranged below the spiral conveyor II; the coal transmission pipeline is communicated with the coal pulverizer; and the coal pulverizer is communicated with a coal pipeline. The utility model provides the combined combustion coal supply device of the chain boiler furnace, which has the advantages as follows: the small occupied space is small; the coal leakage amount of the fire grate can be reduced; the combined combustion coal supply device is not influenced by water of bulk coal; the electricity amount is further saved; and the service life of a coal milling machine can be further prolonged.

Description

A kind of chain-grate boiler stokehold compound combustion coal supply device

Technical field:

The utility model relates to a kind of chain-grate boiler stokehold compound combustion coal supply device.

Background technology:

Present China existing chain-grate boiler compound combustion coal supply device, volume is big, and it is big to take up room; For example, utility model patent number is 201120194006.9, discloses the end that a kind of coaling machine is arranged on the coal pulverizer Keep away from boiler; Coal bunker is arranged on the coal feed point top of coaling machine; Installing wind storehouse liner plate in the wind storehouse of coal pulverizer, coaling machine is supported by last coal support, inclined fixing on the ground.Structure is relatively disperseed, and gets into the coal of coal bunker in addition, regardless of different kinds of all pulverized by coal pulverizer, increased electric cost, reduced the service life of coal pulverizer.

Summary of the invention:

The utility model technical problem to be solved is that coal is sieved, and gets into fire grate greater than 13-15mm with greater than the coal of 6mm, falls into the duff storehouse less than the 6mm coal; Carry, dry through conveying worm; Get into coal pulverizer and pulverize, save electricity, the service life of increase coal pulverizer.

For realizing that above-mentioned purpose the utility model adopts following technical scheme: because the multilayer sub-sieve is housed in coal bunker; The bottom of multilayer sub-sieve contacts with scroll wheel, and scroll wheel is contained on the vibration gripper shoe, and the vibration gripper shoe is fixedly connected with vibrator; The vibration gripper shoe is equipped with vibrator; Vibrator makes the scroll wheel vibration on the vibration gripper shoe through the drive of motor, thereby makes the vibration of multilayer sub-sieve; Because the multilayer sub-sieve is arranged to two layer screen up and down; The specification of multilayer sub-sieve top sieve aperture is 13-15mm; Multilayer sub-sieve bottom sieve aperture specification is 6mm, divides the back to get into traveling-grate stoker greater than 13-15mm, screen more than the 6mm, gets into coal pulverizer less than the following coal of 6mm and pulverizes; Save electricity, the service life of increase coal pulverizer; Because the support bar on the multilayer sub-sieve is connected with connecting rod; Connecting rod is connected with crank, is connected with motor on the crank axle, and the motor drives crank rotates, connecting rod drives the multilayer sub-sieve and on scroll wheel, moves around; Make multilayer sub-sieve vibration velocity fast, steady, coal can separate fast and be difficult for stopping up.

Because the stage casing is provided with the duff storehouse in the coal bunker, the top, bottom is provided with conveying worm I, in the middle of face arch and conveying worm I, is provided with conveying worm II; Conveying worm I, conveying worm II, an end have outlet, outlet to communicate, and conveying worm II one end is equipped with motor; The other end is equipped with driving gear, the driven gear engagement of driving gear and conveying worm I axle one end, and conveying worm I, conveying worm II all are welded with helical blade; Can make and fall into duff in the duff storehouse; Be transported to conveying worm II oven dry through conveying worm I, do not receive the influence of duff humidity, can not stop up coal pulverizer to guarantee the duff of importing coal pulverizer; Below, conveying worm II two ends is provided with defeated coal connecting leg, carries connecting leg to be communicated with coal pulverizer, and the duff that screening is come out gets into coal pulverizer and pulverizes; Coal pulverizer is communicated with coal pipeline, and coal dust sprays into the burning of chain burner hearth through coal pipeline through burner.

It is little to the utlity model has equipment occupation space; Reduce the fire grate coal leakage quantity; The moisture content of coal that do not receive to loose influences; Save electricity; Prolong the coal pulverizer characteristics in service life.

Description of drawings:

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further detailed explanation.

Fig. 1 is the front view of the utility model internal structure.

Fig. 2 is the left view of the utility model A-A face structure.

Fig. 3 is the vertical view of the utility model B-B face structure

Fig. 4 is a conveying worm B-B face structure vertical view among second kind of embodiment of the utility model

Coal flashboard 2, coal feeding cylinder 3, multilayer sub-sieve 4, scroll wheel 5, vibration gripper shoe 6, duff storehouse 7, coal bunker 8, connecting rod 9, crank 10, conveying worm I 11, manhole cover 12, coal pulverizer 13, coal pipeline 14, vibrator 15, convey coal pipe 16, coal flashboard lowering or hoisting gear 17, spillplate I 18, spillplate II 19, movable spillplate 20, face arch 21, spillplate III 22, conveying worm II 23, driving gear 24, driven gear 25, fire grate 26, burner in the drawings, 1,

The specific embodiment:

As shown in Figure 1, said multilayer sub-sieve 3 is arranged on coal bunker 7 stage casings, is positioned at 6 tops, duff storehouse, is provided with conveying worm I10 in the semicircle of top, 6 bottoms, duff storehouse, at face arch 20 and the middle conveying worm II22 that is provided with of conveying worm I10; Multilayer sub-sieve 3 is inclined, and the bottom of multilayer sub-sieve 3 is supported by the scroll wheel on the vibration gripper shoe 54; The bottom of multilayer sub-sieve 3 contacts with scroll wheel 4, and scroll wheel 4 has 5-10 all to be contained on the vibration gripper shoe 5, and multilayer sub-sieve 3 is arranged to two layer screen up and down; The length of top sieve is than the wide 10-20mm of length of bottom sieve, and the end top of sieve is provided with spillplate II18, between multilayer sub-sieve 3 two layer screen; One end is connected by the dividing plate sealing, and the other end is by the blank connection of support bar, and support bar is connected with connecting rod 8; Connecting rod 8 is connected with crank 9, is connected with motor on 9 on the crank; 6 bottoms, duff storehouse are semicircle shape, and spillplate III21 and semi-circular plate fuse, and an end is fixed on the device inwall, and the other end is connected with movable spillplate 19 screws.

As shown in Figure 2, vibration gripper shoe 5 is fixedly connected with vibrator 14, and vibrator 14 is equipped with in vibration gripper shoe 5 both sides.

As shown in Figure 3, be provided with conveying worm I10,2 in the semicircle of 6 bottoms, said duff storehouse tops, in the middle of face arch 20 and conveying worm I10, be provided with conveying worm II22,2; Said conveying worm I10, conveying worm II22 one end have outlet, outlet to communicate; Conveying worm I10 one end is equipped with motor; The other end is equipped with driving gear 23; Driving gear 23 meshes with the driven gear 24 of conveying worm II22 axle one end, is welded with helical blade on conveying worm I10, the conveying worm II22 axle; Below, said conveying worm II (22) two ends is provided with convey coal pipe (15), and convey coal pipe (15) is communicated with coal pulverizer (12), and coal pulverizer (12) is communicated with coal pipeline (13).

Like Fig. 1, shown in Figure 4; When boiler less than 20 ton hours, 6 bottoms, said duff storehouse tops is provided with 1 of conveying worm 10 ' I, in the middle of face arch (20 ') and conveying worm I (10 '), is provided with 1 of conveying worm II (22 '); Conveying worm I (10 '), conveying worm II (22 ') end have outlet, outlet to communicate; Conveying worm II (22 ') end is equipped with motor, and the other end is equipped with driving gear (23 '), and driving gear (23 ') meshes with the driven gear (24 ') of conveying worm I (10 ') axle one end; Be welded with helical blade on conveying worm I (10 '), conveying worm II (22 ') axle; Conveying worm II (22 ') end below is provided with convey coal pipe (15 '), and convey coal pipe (15 ') is communicated with coal pulverizer (12 '), and coal pulverizer (12 ') is communicated with coal pipeline (13 ').

Get into the diffusing coal of chain-grate boiler coal bunker, through the adjusting of coal flashboard, by the coal feeding cylinder roller transfer; Diffusing coal in the coal bunker is transported to multilayer divides on the cribellum, rotate through bent axle, connecting rod drives multilayer and divides cribellum to move reciprocatingly; Produce vibration source by vibrator; Through the vibration gripper shoe, make the scroll wheel vibration on the vibration gripper shoe, vibration source is conducted to multilayer divide cribellum.The multilayer sub-sieve is under the influence that is moved back and forth and vibrate; To go into the diffusing screen branch of stove, and fall on the traveling-grate stoker after the ground floor coal cinder that particle＞13-15mm is above sieves, the coal cinder of 6-13mm falls on the traveling-grate stoker through blank support bar after getting into second layer sieve; Second layer sieve falls into the duff storehouse after the coal cinder below particle＜6mm is sieved; Carry, dry duff is imported the duff storehouse through conveying worm, get in the coal pulverizer, coal pulverizer breaks into coal dust with duff; Through the coal pulverizer outlet coal dust is transported to coal pipeline, gets into the burning of chain burner hearth.Get into the coal cinder of traveling-grate stoker＞6mm, on fire grate, burn, the duff of≤6mm,, to pulverize through Coal-disintegrating machine, coal pulverizer is communicated with coal pipeline, and coal dust sprays into the chain-grate boiler burner hearth through burner and does suspension combustion through coal pipeline.

The utility model provides a kind of and has promptly taken up room for a short time, reduces the fire grate coal leakage quantity again, and save electricity prolongs coal pulverizer service life again simultaneously and the chain-grate boiler compound combustion coal supply device that not influenced by diffusing moisture content of coal again.

Claims

1. chain-grate boiler stokehold compound combustion coal supply device; Comprise coal bunker (7), coal flashboard lowering or hoisting gear (16), spillplate I (17), coal feeding cylinder (2), defeated coal connecting leg (15), coal pulverizer (12), conveying worm (10), face arch (20), fire grate (25); It is characterized in that: said multilayer sub-sieve (3) is arranged on coal bunker (7) stage casing; Be positioned at top, duff storehouse (6); Be provided with conveying worm I (10) in the semicircle of top, bottom, duff storehouse (6), in the middle of face arch and conveying worm I (10), be provided with conveying worm II (22).

2. a kind of chain-grate boiler according to claim 1 stokehold compound combustion coal supply device, it is characterized in that: said multilayer sub-sieve (3) is inclined, and the bottom of multilayer sub-sieve (3) is supported by the scroll wheel (4) on the vibration gripper shoe (5).

3. a kind of chain-grate boiler according to claim 1 stokehold compound combustion coal supply device; It is characterized in that: the bottom of said multilayer sub-sieve (3) contacts with scroll wheel (4); Scroll wheel (4) 5-10 all is contained on the vibration gripper shoe (5); Vibration gripper shoe (5) is fixedly connected with vibrator (4), and vibrator (14) is equipped with in vibration gripper shoe (5) both sides.

4. a kind of chain-grate boiler according to claim 1 stokehold compound combustion coal supply device is characterized in that: said multilayer sub-sieve (3) is arranged to two layer screen up and down, and the specification of multilayer sub-sieve (3) top sieve aperture is 13-15mm; Multilayer sub-sieve (3) bottom sieve aperture specification is 6mm, and the length of top sieve is than the wide 10-20mm of length of bottom sieve, and the end top of sieve is provided with spillplate II (18); Between multilayer sub-sieve (3) two layer screen; One end is connected by the dividing plate sealing, and the other end is by 3-5 the blank connection of support bar, and the support bar on the multilayer sub-sieve (3) is connected with connecting rod (8); Connecting rod (8) is connected with crank (9), is connected with motor on crank (9) axle.

5. a kind of chain-grate boiler according to claim 1 stokehold compound combustion coal supply device; It is characterized in that: bottom, said duff storehouse (6) is semicircle shape; Spillplate III (21) fuses with semi-circular plate, and an end is fixed on the device inwall, and the other end is connected with movable spillplate (19) screw.

6. a kind of chain-grate boiler according to claim 1 stokehold compound combustion coal supply device; It is characterized in that: top, bottom, said duff storehouse (6) is provided with (10) 2 of conveying worm I; Send machine I (10) middle (22) 2 of the conveying worm I I that are provided with at face arch and spiral

7. according to claim 1 or 6 described a kind of chain-grate boiler stokehold compound combustion coal supply devices; It is characterized in that: said conveying worm I (10), conveying worm II (22) one ends have outlet, outlet to communicate; Conveying worm I (10) one ends are equipped with motor; The other end is equipped with driving gear (23), and driving gear (23) meshes with the driven gear (24) of conveying worm II (22) axle one end, is welded with helical blade on conveying worm I (10), conveying worm II (22) axle.

8. a kind of chain-grate boiler according to claim 7 stokehold compound combustion coal supply device; It is characterized in that: below, said conveying worm II (22) two ends is provided with convey coal pipe (15); Convey coal pipe (15) is communicated with coal pulverizer (12), and coal pulverizer (12) is communicated with coal pipeline (13).

9. chain-grate boiler stokehold compound combustion coal supply device; It is characterized in that: top, duff storehouse (6 ') bottom is provided with conveying worm (10 ') I1 platform; At face arch (20 ') and middle 1 of the conveying worm II (22 ') that is provided with of conveying worm I (10 '), conveying worm I (10 '), conveying worm II (22 ') end have outlet, outlet to communicate, and conveying worm I (10 ') end is equipped with motor; The other end is equipped with driving gear (23 '); Driving gear (23 ') meshes with the driven gear (24 ') of conveying worm II (22 ') axle one end, is welded with helical blade on conveying worm I (10 '), conveying worm II (22 ') axle, and conveying worm II (22 ') end below is provided with convey coal pipe (15 '); Convey coal pipe (15 ') is communicated with coal pulverizer (12 '), and coal pulverizer (12 ') is communicated with coal pipeline (13 ').