CN202993234U

CN202993234U - Automatic rotary furnace ash cleaning device

Info

Publication number: CN202993234U
Application number: CN 201320009493
Authority: CN
Inventors: 徐胜利; 吴俊男; 王晓放; 田夫
Original assignee: Dalian University of Technology
Current assignee: Dalian University of Technology
Priority date: 2013-01-08
Filing date: 2013-01-08
Publication date: 2013-06-12
Anticipated expiration: 2023-01-08

Abstract

The utility model belongs to the field of energy utilization and relates to an automatic rotary furnace ash cleaning device. The automatic rotary furnace ash cleaning device comprises an air bin shell, a rotary base plate and brush wire beams, wherein the lower end of the side wall of the air bin shell consists of two arc sections; the centre of a rotary shaft of the rotary base plate passes through the circle centers of the arc sections; the brush wire beams have certain elasticity; and one end of each brush wire beam is fixed on a rotary plate of the rotary base plate and the other end of each brush wire beam is in close contact with an arc wall surface. In the rotating process of the rotary shaft, the wire brush beams on at least two rotary plates are respectively contact two arc wall surfaces in any position, so that a sealing effect is achieved, and the air supply property of an air bin is guaranteed; and ash residues fall on the rotary plates of the air bin base plate via air supply holes of a fire grate, and after the rotary plates rotate by a certain angle, the ash residues are transferred to the outside of the air bin and automatically fall under the effect of gravity, so that the automatic ash cleaning is realized. The automatic rotary furnace ash cleaning device disclosed by the utility model realizes the automatic ash cleaning on the basis of guaranteeing the air supply property of the air bin and greatly reduces labor strength.

Description

A kind of Scotch boiler automatic ash removing device

Technical field

The utility model belongs to field of energy utilization, relates to a kind of Scotch boiler automatic ash removing device.

Background technology

At present, the most domestic Industrial Boiler is combustion coal chain boiler, and when combustion coal chain boiler normally moved, the fine particles such as coal dust, lime-ash can fall into the wind storehouse by the fire grate wind pushing hole.Lime-ash in the wind storehouse gathers and can stop up the wind storehouse, and wind storehouse Air Flow is caused bad impact, needs in time cleaning.Usually the purge mode that adopts is that wind storehouse base plate is made plug-type sideboard, realizes the opening and closing of wind storehouse bottom ash discharging hole by the horizontal reciprocating movement of baffle plate.If the untimely cleaning of lime-ash of gathering in chain grate boiler wind storehouse can affect the air feed performance in wind storehouse and the normal combustion of coal, cause whole boiler efficiency to reduce.Usually just need to carry out a deashing operation every a few hours.Frequent due to the deashing number of times, equipment is heavy, the labour intensity of deashing operation is very large.Maximization is the trend of boiler plant development, and large-sized boiler equipment is heavier, and coal consumption is also larger, so the deashing workload in wind storehouse is very large.In order to reduce labour intensity, realize that the automation of deashing is very urgent.The hydraulic-driven of utilizing boiler grate wind chamber automatic dust remover (application number 200810011973.X) realizes that horizontal push-and-pull moves back and forth, and replaces manually-operated to complete deashing, has reduced labour intensity.

Automatic ash removing device need to consider the cost of equipment occupation space size, equipment and reliability and purge mode to many-sided factors such as impact of wind storehouse air feed.The mode of reciprocating sliding formula must detach wind storehouse base plate when deashing, can cause air to flow out from bottom, wind storehouse, affect mobile stability and the air feed performance of wind storehouse inner air.Adopt the automatic ash removing device of horizontal reciprocating movement to take up room greatly, hydraulic means is complicated, and the factor of reliability and cost aspect is the problem that its practical application must be considered.

The utility model content

The purpose of this utility model is to provide a kind of Scotch boiler automatic ash removing device, replaces artificial deashing, significantly reduces labour intensity, simultaneously, reduce deashing process to the impact of wind storehouse Air Flow, and it is little to take up room.

The technical solution of the utility model is as follows:

A kind of Scotch boiler automatic ash removing transposition comprises wind storehouse shell, rotary plate, brush tow.

The side wall lower ends of described wind storehouse shell arranges two arc sections: left arc section lower wall and right arc section lower wall; Minimum range between left arc section lower wall and right arc section lower wall is greater than the flap length of twice, and flap can rotate in the space of two arc sections and ash port composition under rotating shaft drives.

Described rotary plate comprises rotating shaft and flap, and rotating shaft two ends are by bearings, and rotating shaft can be connected to decelerator by transmission device.

Described brush tow bands together and forms by having certain flexible fine wire, and an end of brush tow is fixed on flap, and the brush tow is the angle of inclination along the rotating shaft direction of rotation with the rotating shaft radial direction, and angular range is 15 ° ~ 60 °.

The wind storehouse side wall lower ends that the utility model proposes is circular-arc, in the rotating shaft rotary course, can guarantee that each constantly contacts with brush tow on flap the Feng Cang both sides, because the brush tow has elasticity, with wind storehouse sidewall contact the time, can produce elastic contact deformation, to guarantee the close contact of flap and wind storehouse side plate, realize the effect of sealing.Bottom, wind storehouse is flowed out without air, namely guaranteed the air feed performance in wind storehouse.Lime-ash falls into by the fire grate wind pushing hole on the flap of wind storehouse base plate, and after flap turned over certain angle, it is outside that lime-ash is transferred to the wind storehouse, automatically drops under the self gravitation effect.If there is larger lime-ash to fall the contact position of brush tow and wind storehouse sidewall, the brush tow generation moderate finite deformation automatically that is squeezed can fall smoothly lime-ash, and is unlikely to block flap, has guaranteed the normal operation of automatic ash removing device.Rotating shaft can be connected on the decelerator that drags fire grate by transmission device, does not need to add other power-equipments, and can change gearratio according to the needs of deashing frequency, thereby changes the rotating speed of rotating shaft, realizes automatic ash removing.

Description of drawings

Fig. 1 is rotary deashing fire grate structure schematic diagram.

Fig. 2 is Scotch boiler automatic ash removing device structural representation.

Fig. 3 (a) is Scotch boiler automatic ash removing device profile.

Fig. 3 (b) is brush tow structure chart.

In figure: 1 wind storehouse shell, 2 rotary plates, 3 brush tow, 4 rotating shafts, 5 flaps.

The specific embodiment

Scotch boiler deashing device of the present utility model is comprised of wind storehouse shell, rotary plate and brush tow.

The physical dimension of wind storehouse shell length determined by the size of the tonnage of boiler and fire grate, and wind storehouse side wall lower ends ash port width is 0.8 times to 1 times of flap 5 length.Spindle central is by the center of circle of arc section, and rotating shaft two ends are by bearings.Can determine the rotating shaft rotating speed according to the requirement of removing ash of boiler frequency.Rotating shaft can be connected on the decelerator that drags fire grate by suitable transmission transposition, provides power by fire grate reducer, also can adopt independent transfer motion power.Flap evenly is arranged in rotating shaft, and the flap number is 4 to 9, and the flap number should be complementary with the ash port width, can suitably increase the flap number in the higher situation of machining accuracy.The length of flap is identical with wind storehouse length.The flap top in the situation that the machining accuracy permission is as far as possible little, generally is no more than 1cm to the arc section gap width, and the length of brush tow is 1.05 times to 2 times of this gap width, guarantees brush tow and arc section wall close contact.To between 0.07mm, brush tow one end is fixed on flap the fine wire diameter of composition brush tow, rotates with rotating shaft at 0.05mm.The brush tow is along the direction of rotating shaft rotation, is the angle of inclination with the radial direction of rotating shaft, scope at 15 degree between 60 degree.

Claims

1. a Scotch boiler automatic ash removing device, is characterized in that, this Scotch boiler automatic ash removing device comprises wind storehouse shell (1), rotary plate (2) and brush tow (3);

The side wall lower ends of wind storehouse shell (1) arranges two arc sections: left arc section lower wall and right arc section lower wall; Rotary plate (2) is comprised of rotating shaft (4) and flap (5), and flap (5) is connected in rotating shaft (4), and rotating shaft two ends are by bearings; Brush tow (3) is banded together by elastic metallic yarn and forms, and brush tow one end is fixed on flap (5);

Minimum range between left arc section lower wall and right arc section lower wall is greater than the flap length of twice, and flap (5) can rotate in the space of two arc sections and ash port composition under rotating shaft (4) drives.

2. Scotch boiler automatic ash removing device according to claim 1, is characterized in that, rotating shaft (4) is connected to decelerator by transmission device.

3. boiler automatic ash removing device according to claim 1 and 2, is characterized in that, brush tow (3) becomes 15 ° ~ 60 ° along the direction of rotating shaft (4) rotation with the radial direction of rotating shaft (4).

4. boiler automatic ash removing device according to claim 1 and 2, is characterized in that, described wind ash port width is 0.8 times to 1 times of flap (5) length.

5. boiler automatic ash removing device according to claim 3, is characterized in that, described wind ash port width is 0.8 times to 1 times of flap (5) length.

6. according to claim 1 and 2 or 5 described boiler automatic ash removing devices, is characterized in that, described fine wire diameter at 0.05mm between 0.07mm.

7. boiler automatic ash removing device according to claim 3, is characterized in that, described fine wire diameter at 0.05mm between 0.07mm.