CN201731498U

CN201731498U - Vibration dust cleaning device for waste heat boiler

Info

Publication number: CN201731498U
Application number: CN2010202840275U
Authority: CN
Inventors: 杨永波; 卜英勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-08-06
Filing date: 2010-08-06
Publication date: 2011-02-02
Anticipated expiration: 2020-08-06

Abstract

A vibration dust cleaning device for a waste heat boiler is applied to vibration dust cleaning for waste heat boilers in waste incineration power plants, and comprises a driving device, a driving shaft, a plurality of vibrating hammers and vibrating rods, wherein the driving device disposed inside or outside a cabinet body of the vibration dust cleaning device consists of a reducer motor, a drive sprocket and a driven sprocket, the drive sprocket drives the driven sprocket to run, the driving shaft is transversely disposed inside the cabinet body and combined with a bearing block on the lateral wall of the cabinet body, the driven sprocket is fixed to the driving shaft, two ends of each vibrating hammer are respectively a fixing part and a hammer head, the fixing part is fixed onto a shaft rod of the driving shaft, one end of each vibrating rod corresponds to a striking point of one hammer head, the other end of the vibrating rod penetrates the cabinet body to contact with a vibrated piece, the vibrating rods transmits vibration to the vibrated pieces, such as a super heater, an evaporator, a coal saver and the like, so as to drive internal heated faces of the super heater, the evaporator, the coal saver and the like to vibrate, and after accumulated dust on the heated face is vibrated down, the dust cleaning effect is achieved, thereby increasing working efficiency and the service life of equipment.

Description

Ash removal equipment for flapping exhaust heat boiler

Technical field

The present invention relates to a kind of with the rapping apparatus of continuous mechanical vibrator with the dust stratification on the elimination boiler heating surface, especially a kind of rapping apparatus that is used for waste incineration residual heat of electric power plant removing ash of boiler.

Background technology

At present, to be converted into steam, hot water and hot-air be that typical heat energy directly utilizes form to the fume afterheat that produces of waste incineration.By being arranged in the waste heat boiler after the incinerator, flue gas heat is changed into the combustion air of hot water, steam and the uniform temperature of certain pressure and temperature, directly offer the external world.Whereby, can not only reduce environmental pollution, and can also obtain the energy and utilized by people.Yet, contain a large amount of dust in the waste incineration residual heat of electric power plant boiler hot flue gas, dust stratification on boiler heating surface easily, influence the heat-transfer effect of boiler heating surface, cause boiler efficiency to reduce, generated energy reduces, and therefore resolving boiler heating surface dust stratification problem is that waste incineration residual heat of electric power plant boiler substantially the most also is the problem that must solve.At present, eliminating collecting ash has following several mode: the one, and sound wave ashing promptly at set intervals to the sound wave of heating surface emission certain frequency, with strong disturbance, reaches the effect of removing fouling of heating surface to flue gas stream; But the mode of this removing dust stratification is deashing continuously, different parts ash-removal effect difference for heating surface is very big, there are a lot of blind areas, and because the boiler negative pressure is bigger, the emission sound wave can be brought a large amount of cold airs into, had a strong impact on the operating efficiency of boiler, different in addition heating surfaces is very big because of the applied stress value difference that acoustic vibration causes, and its anti-fatigue life be there are differences; The 2nd, the explosion purge mode, its principle is similar to sound wave ashing, and just the outburst shock wave with a certain amount of gunpowder replaces sound wave, and it is present in the identical shortcoming of aforementioned purge mode equally, and force of explosion is difficult to control, may be that local heating's face is damaged; The 3rd, the mechanical vibrator purge mode, its principle is to hit the vibrating rod that contacts with heating surface by beater, make the heating surface tube group form body vibration, thereby reach the purpose of deashing, but at present that is that all right is ripe for the mechanical vibrator deashing mechanism, has many problems: beater axial float problem, equipment fault pilosity, safeguard intensity and workload is big and because the locus of rapping is single; Beater axial float or highly wrong and cause the deviation of beater movement locus, thus cause that departing from appears in the rapping point on three-dimensional, and problem such as the cleaning efficiency that is caused by reason such as above-mentioned is low.

The utility model content

The purpose of this utility model provides a kind of fouling of heating surface that prevents, improves boiler thermal output, realizes boiler safety, aim of stable operation ash removal equipment for flapping exhaust heat boiler.

Another purpose of the present utility model provides a kind of ash removal equipment for flapping exhaust heat boiler that can carry out vibration dust-cleaning on a plurality of locus to the part that shaken, and be controlled work opportunity of each beater.

A purpose more of the present utility model provides a kind of ash removal equipment for flapping exhaust heat boiler of rum point for adjusting or proofread and correct of beater.

The utility model provides a kind of ash removal equipment for flapping exhaust heat boiler, is applied to the vibration dust-cleaning of waste incineration residual heat of electric power plant boiler, and described device has a rack body, and it mainly is made up of drive unit, driving beater and vibrating rod.This drive unit be located at this rack this external or in, this drive unit comprises a reducing motor, a drive sprocket and a driven sprocket, this drive sprocket drives the driven sprocket running with chain; This driving shaft is horizontally set in this rack body, and is incorporated into the bearing block on the rack body sidewall, and this driven sprocket is fixed in this driving shaft; At least one beater, the two ends of each beater are respectively fixed part and tup, and this fixed part is fixed on the axostylus axostyle of this driving shaft; The rum point of the corresponding tup of this vibrating rod one end, its other end pass the rack body and contact with the part that shaken of outside.

Wherein: this vibrating rod is provided with a back-moving spring that can make the vibrating rod return.

The quantity of beater is a plurality of, and the compartment of terrain is arranged on the axostylus axostyle of this driving shaft respectively, is equipped with several sections axle sleeves on this driving shaft, and each section axle sleeve is located at respectively between two adjacent beaters.

Each beater also comprises hammerhead jib, following hammerhead jib, combines with hinged between hammerhead jib and the following hammerhead jib on this, and this fixed position is on hammerhead jib on this.

Described several beaters are divided into the short hammer that the mutually isometric hammer of a group length equates with a group length, and long hammer is arranged on the axostylus axostyle of this driving shaft with the mode of short hammer with interlaced interval.

The quantity of described vibrating rod is a plurality of and is distributed in two different vertical heights, the rum point of the tup of corresponding described respectively long hammer of an end of each vibrating rod and short hammer.

The last hammerhead jib of at least one pair of described beater has different radial positions with respect to this driving shaft, promptly forms angle between the axis of the last hammerhead jib of at least one pair of beater.

The following hammerhead jib of each beater is provided with a guider, and this guider protrudes in down the surface of hammerhead jib and can be arranged in up and down between the hammerhead jib, and this guider can slide up and down.

The outer end of described vibrating rod is provided with and is used to seal the sealing device of part of being shaken.

The quantity of described beater is a plurality of, and the tup weight and the length of each beater has nothing in common with each other, the rum point of the tup of the corresponding beater of described vibrating rod and being arranged at respectively on the variant vertical height.

Described ash removal equipment for flapping is controlled by DCS remote auto operator scheme, makes each beater carry out work in proper order a cycle of operation planted agent.

The quantity of described beater is a plurality of, and the length that hammer is played in each vibration has nothing in common with each other, the rum point of the tup of those beaters of described vibrating rod correspondence and being arranged at respectively on the variant vertical height.

Useful technique effect of the present utility model is: be provided with several beaters in rapping apparatus, and by the rotation of motor reducer drive driving shaft, make described several beaters be lifted repeatedly and fall, with the bump vibrating rod, by vibrating rod vibration is passed to the part that shaken, as superheater, evaporimeter, economizer etc., thus the vibration of inner heating surfaces such as drive superheater, evaporimeter, economizer, thereby reach ash-removal effect, to improve the operating efficiency and the service life of equipment.Further, the quantity of beater is made as a plurality of, and tup weight and length that hammer is played in each vibration have nothing in common with each other, the rum point of the tup of corresponding those beaters of described vibrating rod and being arranged at respectively on the variant vertical height partly carries out the effect of vibration dust-cleaning to play at the part different spaces of being shaken.

Description of drawings

Fig. 1 is the front schematic view of the utility model rapping apparatus.

Fig. 2 is the A-A schematic diagram of Fig. 1.

The enlarged diagram of Fig. 3 beater of the present utility model.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described in detail.

Embodiment one:

As shown in Figure 1, the utility model mainly is made up of drive unit 1, driving shaft 2, beater 3 and vibrating rod 4, wherein drive unit can be located at the inside or the outside of the rack body 9 of the utility model ash removal equipment for flapping, and present embodiment selects drive unit 1 is arranged at the outside of rack body 9.Drive unit 1 comprises a motor reducer 11 (generally selecting power is 0.75KW), drive sprocket 12, chain 13, driven sprocket 14, and drive sprocket 12 drives driven sprocket 14 runnings with chain 13.

Driving shaft 2 is for being horizontally set in the rack body 9, one end of driving shaft 2 is incorporated into the bearing block 91 on the sidewall of rack body 9, the other end of driving shaft 2 is incorporated into the bearing block 91 on rack body 9 another sidewalls, and pass this sidewall, this driven sprocket 14 of secure bond on the axostylus axostyle of the part driving shaft 2 that passes, whereby, when motor reducer 11 work, drive sprocket 12 drives from sprocket wheel 14 runnings, and driven sprocket 14 drives driving shaft 2 and rotates synchronously.

On the axostylus axostyle of the driving shaft 2 of rack body 9 inside, be hung with several beaters 3 at interval, one end of beater 3 is a fixed part 31, it is fixed on the axostylus axostyle of driving shaft 2 with fixed part 31, fixed part 31 can be one and encircles the hole, encircle after on the driving shaft 2, screw the both ends that encircle the hole so that it fixes (not illustrating among the figure) with bolt again.The other end of beater 3 is a tup 32.Be connecting rod between tup 32 and the fixed part 31.With the nut secure bond,, rotates synchronously driving shaft 2 between fixed part 31 and the driving shaft 2 so that driving fixed part 31.Because in real work, be subjected to the external force influence, each beater 3 is easily along driving shaft 2 axial floats, so what can be chosen in driving shaft 2 wears several sections axle sleeves (not illustrating), each section axle sleeve is located between two adjacent beaters 3, the two ends of each axle sleeve are resisted against fixed part 31, reach the purpose that makes beater 3 axial limitings.

Front schematic view as shown in Figure 1, the state of vibration hammer 3 for falling, but the length (fixed part is to the distance between the tup) that can find out each beater 3 among the figure is unequal, beater 3 shown in the figure is divided into two groups, one group be length identical and long be long hammer 3 ', another group is identical and short for length is short hammer 3 ", short hammer 3 " be suspended on the driving shaft 2 for interleaved in regular turn with long hammer 3 '.

Again as shown in Figure 2, Fig. 2 is the A-A side schematic view of Fig. 1.Visible driving shaft 2, beater 3 and tup 32 among the figure.The outer end of vibrating rod 4 passes the outside of rack body 9, and to contact (omitting among the figure) with the part that shaken, the other end of vibrating rod 4 contacts with tup 32.Because, beater 3 in the present embodiment is divided into short hammer 3 " with long hammer 3 ', so tup 32 transverse movements when producing bump the place height also inequality, corresponding to this; vibrating rod 4 is distributed on the different vertical heights, so that each vibrating rod 4 can both just in time receive the impact of each tup 32.By the embodiment of present embodiment, in an ash removal equipment for flapping, be provided with the length hammer of several different lengths, can treat ash removing equipment differing heights, different parts forms the rapping effect.

In the course of the work, motor reducer 11 drives drive sprocket 12, drives driven sprocket 14 by chain 13 again, rotate thereby drive driving shaft 2, when driving shaft 2 rotates, drive fixed part 31 rotations, after tup 32 lifted predetermined height, tup 32 fell, and hits vibrating rod 4; By vibrating rod 4 rapping power is passed to and superheater, evaporimeter, economizer etc., thus the vibration of inner heating surfaces such as drive superheater, evaporimeter, economizer, thus reach ash-removal effect.Beater 3 is rotated further through lifting hammer once more with driven sprocket 14, carries out the rapping second time, and so circulation goes round and begins again.Vibrating rod 4 is provided with back-moving spring (not illustrating among the figure), after making vibrating rod 4 by tup 33 bumps, can be returned to initial position once more again, wait for rapping next time, simultaneously can also be by adjusting the coefficient of elasticity of this back-moving spring, the huge impact that tup 32 is produced plays certain adjustment and cushioning effect, and the impact of avoiding vibrating rod 4 to spread out of is excessive and destroy cabinet.

Yet, be not limited to above-mentioned situation during actual enforcement, for example can make the identical length of each beater 3 same or all inequality mutually, can decide according to actual needs.

Embodiment two:

Beater 3 in the foregoing description can only be to be combined to form beater by common connecting rod and tup.Present embodiment has further been done improvement to above-mentioned beater 3.As shown in Figure 3, the fixed part 31 of beater 3 and the connecting rod between the tup 32 are made up of two parts, promptly comprise hammerhead jib 33 and following hammerhead jib 34, and above-mentioned fixed part 31 promptly is positioned at hammerhead jib 33.Following hammerhead jib 34 and last hammerhead jib 33 are to be articulated and connected, and following hammerhead jib 34 can rotate relative to last hammerhead jib 33, and the fixed part 31 on the last hammerhead jib 33 is with retaining element and driving shaft 2 secure bond such as nuts.As shown in Figure 3, on driving shaft 2, the last hammerhead jib 33 of long hammer 3 ' hammers 3 into shape with short " upper arm 33 be positioned at different radial positions with respect to driving shaft 2, the axis formation angle α of both last hammerhead jibs.Whereby, though long hammer 3 ' and short hammer 3 " driven and rotated by same driving shaft 2, because of there being a differential seat angle, the opportunity that its tup 32 is fallen is inequality; but form a time difference, this time difference can be calculated by the running speed of motor reducer and the size of angle α.By the setting of radial angle α between the last hammerhead jib 33 of beater 3, and the calculating of motor reducer rotary speed, the tup 32 of control beater 3 falls and time of clashing into vibrating rod 4, and vibrating rod 4 bumps are shaken, and time of face has nothing in common with each other or for controlled.

Wherein the last hammerhead jib 33 of each beater 3 can be adjusted according to need with respect to the radial position of driving shaft 2, for example makes hammerhead jib 33 on several, all forms angle between any two.Other each several part features of present embodiment and effect are all identical with embodiment one, are not described in detail in this.

Embodiment three:

Another improvement on the basis of the structure of above-mentioned beater 3 is to set up a guider 5.As shown in Figure 3, guider 5 can be stirred up and down.When hammerhead jib 34 is rotated to the top of hammerhead jib 33 instantly, as there is not a setting of guider 5, then descending hammerhead jib 34 and last hammerhead jib 33 is coincidence status, have only driving shaft 2 to continue rotation, this coincidence status could be opened, this at present hammerhead jib 34 go up hammerhead jib 33 relatively and rotate, tup 32 falls, following hammerhead jib 34 forms straight line with last hammerhead jib 33 at vertical direction, and the minimum point that tup 32 falls is driving shaft is gone up the length sum of underarm below 2 position, and this is a limiting condition.But sometimes, the rum point that tup 32 falls need be adjusted to more suitably position, be not aforesaid minimum point, and set here guider 5 plays this effect.Guider 5 is arranged at down on the hammerhead jib 34, and it protrudes in down the surface of hammerhead jib 34 and is arranged in hammerhead jib up and down.As shown in Figure 3, shape β in an angle between the following hammerhead jib 34 of long hammer 3 ' and the last hammerhead jib 33, when the guider 5 that moves up, angle β reduces, and hammerhead jib coincidence ratio is big up and down, and tup 32 rum points are lower; When moving down guider 5, hammerhead jib coincidence ratio is little up and down, and when long hammer 3 ' was gone up hammerhead jib 33 still in heeling condition, following hammerhead jib 34 was gone up hammerhead jib 33 with regard to beginning relatively because of the gravity effect and rotated, and tup 32 is fallen, and the rum point of this moment is higher.Thus, can be by adjusting guider 5, the rum point that makes each tup 32 is adjustable.The process accurate Calculation is to determine the guider 5 residing optimum positions on each beater 3, so that the tup 32 of each beater 3 can clash into corresponding vibrating rod 4 just

In addition,, can cause some parts wears, also can the rum point of tup 32 be adjusted and proofread and correct by adjusting guider 5 along with the ash removal equipment for flapping reason of service life.

" rum point " mentioned above is meant the locus at place when tup 32 transverse movements of each beater 3 produce bump.Other each several part features of present embodiment and effect are all identical with embodiment two, are not described in detail in this.

Embodiment four:

Again as shown in Figure 1, can be with two shared cover drive units 1 of ash removal equipment for flapping.For example, driving shaft 2 makes driving shaft 2 ' and driving shaft 2 be run-in synchronism by the driving shaft 2 ' in another rack body 9 ' of a shaft coupling 6 connections among the figure.Other each several parts in this another rack body 9 ' are all interior identical with rack body 9.Whereby, by a shared cover drive unit 1, drive many ash removal equipment for flapping work.

Wherein,, reach the outside and be connected in the waste heat boiler, thereby might allow the boiler that shaken be communicated with, influence the operating efficiency of boiler with extraneous formation because rack body 9 will be passed in the outer end of vibrating rod 4.Thereby present embodiment is provided with sealing device 7 in the outer end of vibrating rod, is used for sealing the part that shaken.Described sealing device 7 can comprise a guide pin bushing that is fixed on the boiler wall, and this guide pin bushing is passed in the outer end of vibrating rod 4, and is provided with the felt collar oil sealing between guide pin bushing and vibrating rod.The concrete form of sealing device 7 is not limited to aforesaid way, and any sealing device of realizing effects equivalent all can be implemented at this.

And remove the needs at dust stratification position according to actual needs, wherein the quantity of beater is a plurality of, and the tup weight and the length of each beater have nothing in common with each other, consequent rapping dynamics also has nothing in common with each other, and is arranged at respectively on the variant vertical height because of the rum point of each tup is different with the corresponding vibrating rod of these beaters simultaneously.

In addition, ash removal equipment for flapping of the present utility model both can be by DCS remote auto operation, also can local manual operation, and local control cabinet is equipped with change-over switch.For example, can preestablish speed, the start-up time of motor reducer, make each beater carry out work in proper order a cycle of operation planted agent by DCS remote auto operator scheme.Other each several part features of present embodiment and effect are all identical with embodiment three, are not described in detail in this.

Ash removal equipment for flapping of the present utility model mainly designs at particular job environment of the waste heat boiler of waste incineration power plant, equally also can be applicable to the technical field that other are similar.

Claims

1. ash removal equipment for flapping exhaust heat boiler is applied to the vibration dust-cleaning of waste incineration residual heat of electric power plant boiler, and described device has a rack body, it is characterized in that comprising:

Drive unit, be located at this rack this external or in, this drive unit comprises a reducing motor, a drive sprocket and a driven sprocket, this drive sprocket drives the driven sprocket running with chain;

Driving shaft is horizontally set in this rack body, and is incorporated into the bearing block on the rack body sidewall, and this driven sprocket is fixed in this driving shaft;

At least one beater, the two ends of each beater are respectively fixed part and tup, and this fixed part is fixed on the axostylus axostyle of this driving shaft;

Vibrating rod, the rum point of the corresponding tup of one end, its other end pass the rack body and contact with the part that shaken of outside.

2. ash removal equipment for flapping exhaust heat boiler as claimed in claim 1 is characterized in that: this vibrating rod is provided with a back-moving spring that can make the vibrating rod return.

3. ash removal equipment for flapping exhaust heat boiler as claimed in claim 2, it is characterized in that: the quantity of beater is a plurality of, the compartment of terrain is arranged on the axostylus axostyle of this driving shaft respectively, is equipped with several sections axle sleeves on this driving shaft, and each section axle sleeve is located at respectively between two adjacent beaters.

4. ash removal equipment for flapping exhaust heat boiler as claimed in claim 3 is characterized in that: each beater also comprises hammerhead jib, following hammerhead jib, combines with hinged between hammerhead jib and the following hammerhead jib on this, and this fixed position is on hammerhead jib on this.

5. ash removal equipment for flapping exhaust heat boiler as claimed in claim 4, it is characterized in that: described several beaters are divided into the short hammer that the mutually isometric hammer of a group length equates with a group length, and long hammer is arranged on the axostylus axostyle of this driving shaft with the mode of short hammer with interlaced interval.

6. ash removal equipment for flapping exhaust heat boiler as claimed in claim 5 is characterized in that: the quantity of described vibrating rod is a plurality of and is distributed in two different vertical heights, the rum point of the tup of corresponding described respectively long hammer of an end of each vibrating rod and short hammer.

7. as claim 4,5 or 6 described ash removal equipment for flapping exhaust heat boiler, it is characterized in that: the last hammerhead jib of at least one pair of described beater has different radial positions with respect to this driving shaft, promptly forms angle between the axis of the last hammerhead jib of at least one pair of beater.

8. as claim 4,5 or 6 described ash removal equipment for flapping exhaust heat boiler, it is characterized in that: the following hammerhead jib of each beater is provided with a guider, this guider protrudes in down the surface of hammerhead jib and can be arranged in up and down between the hammerhead jib, and this guider can slide up and down.

9. as claim 1,2,3,4,5 or 6 described ash removal equipment for flapping exhaust heat boiler, it is characterized in that: the outer end of described vibrating rod is provided with and is used to seal the sealing device of part of being shaken.

10. as claim 1,2,3,4,5 or 6 described ash removal equipment for flapping exhaust heat boiler, it is characterized in that: the quantity of described beater is a plurality of, and the tup weight and the length of each beater have nothing in common with each other, the rum point of the tup of the corresponding beater of described vibrating rod and being arranged at respectively on the variant vertical height.