CN2072646U

CN2072646U - Level reciprocating fire grate floating side sealing device

Info

Publication number: CN2072646U
Application number: CN 89221427
Authority: CN
Inventors: 康立
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-12-16
Filing date: 1989-12-16
Publication date: 1991-03-06

Abstract

The utility model provides a level reciprocating fire grate floating side sealing device, comprising a frame (1), a supporting plate (2) and a protecting plate (3). The supporting plate and the protecting plate are floated and installed in the frame is fixed on a supporting frame of the fire bed and the fire grate of a boiler. The protecting plate leans a convex table which is at the back of the protecting plate, and the protecting plate is supported by the supporting plate which is tipped at the lower angle root of the frame. The device is used for the frame of the both sides of the boiler fire bed. When a level reciprocating fire grate (5) is installed under the state of cold or is expanded under the state of hot, the protecting plate (3) can float outwards. While in normal use, the side wall of the fire grate (5) and the protecting plate (3) keep tight pasted state all the time, and the leakage losses of the coal of the both sides are reduced.

Description

Level reciprocating fire grate floating side sealing device

The utility model relates to a kind of horizontal reciprocal grate side-sealing device that floats, and is the floating seal of horizontal reciprocal grate (or the stripping fire grate) two sides that are used for various packaged boiler siege.

In prior art, the furnace both sides all are stationary frame and backplate basically, it and horizontal reciprocal grate or stripping fire grate) between under cold conditions, all be reserved with suitable gap so that unlikely blocking when installing or changeing fire grate freely and guaranteeing ignition of the boiler burning back fire grate expanded by heating, and this gap is according to the siege width, the linear expansion coefficient of coal-fired temperature and the cast iron quality that fire grate adopted and different, all be no less than 5mm in the ordinary course of things, very easily cause coal to leave out by mistake when the ignition of the boiler initial stage is dropped into a large amount of soft coal and in the normal combustion process, the loss of accumulating over a long period is considerable.Rotary floating seal plate is housed in siege two body side frames in the utility model patent of having declared, can floats with the breathing of fire grate, subdue to some extent in the slit therebetween, and aforesaid drawbacks is existing to be improved.But because fire grate is to the parallel expansion in both sides after being heated, the floating seal plate then is to move along base angle rotating shaft rotation, so that two interplanars formation straight line contacts so still retain the certain included angle gap, is difficult to eliminate fully coal and leaves out by mistake loss and prevent that string consequently destroys the siege ventilation on the air of slit, side.

The purpose of this utility model is to make fire grate both can obtain the necessary amount of movement in both sides when cold conditions to enable to install easily to change, again can be when the fire grate expanded by heating can free telescopic moving is unlikely block, accomplish the ventilation when eliminating the gap does not make coal leave out by mistake and destroy burning in the time of also will after fire grate is installed, coming into operation substantially.

The utility model is made up of framework ［ 1 ］, support plate ［ 2 ］ and backplate ［ 3 ］.It is characterized in that: be fixed on to float in the framework ［ 1 ］ on the furnace furnace grate support ［ 4 ］ support plate ［ 2 ］ and backplate ［ 3 ］ are housed, backplate ［ 3 ］ leans on its rear portion boss and is supported by the support plate ［ 2 ］ that withstands on framework ［ 1 ］ inferior horn root.Framework ［ 1 ］ is the uncovered of inclined plane in the face of fire grate one side has the upper and lower opening limit, and the inferior horn root is provided with the boss that matches with support plate ［ 2 ］ low groove.Support plate ［ 2 ］ lower end and upper end have the groove that matches with framework ［ 1 ］ and backplate ［ 3 ］ boss.Backplate ［ 3 ］ upper and lower side is equipped with and framework ［ 1 ］ mouthful corresponding inclined plane, limit, and the rear portion is provided with the boss that matches with support plate ［ 2 ］ upper groove.Its frontal plane since the gravity effect closely recline with fire grate ［ 5 ］ sidewall all the time and can adapt to install or heat expansion needs parallel unsteady, move or keep flushing at framework ［ 1 ］ open-mouth.

The utility model compared with prior art has extensive applicability, and its number of spare parts is few, and shape and structure is simple, is easy to produce dependable performance, sturdy and durable.

Accompanying drawing is depicted as the unsteady specific embodiment of side-sealing device on 0.5～6 ton of packaged boiler of horizontal reciprocal grate.Represented the horizontal reciprocal grate side-sealing device side view that floats on the figure, formed by framework ［ 1 ］, support plate ［ 2 ］ and backplate ［ 3 ］.Have its length of inclined plane to equal the flute profile framework ［ 1 ］ of two groups of fire grates in the face of fire grate one side has uncovered and mouthful sideband, be equipped with isometricly and the backplate ［ 3 ］ of corresponding tilt face is all arranged up and down with framework in that open-mouth is floating, its rear portion is provided with boss.Its two ends groove of support plate ［ 2 ］ that length is about 80mm blocks respectively on the boss of the inferior horn root that fits over backplate ［ 3 ］ and framework ［ 1 ］.All three parts are all used the common grey iron manufacturing, and are extremely simple.Because the gravity effect of backplate ［ 3 ］ self, its plane and fire grate ［ 5 ］ side reclines naturally, force stove plate ［ 3 ］ inner parallel mobile to siege outside framework ［ 1 ］ to the both sides elongation during fire grate ［ 5 ］ heat expansion, support plate ［ 2 ］ is that suitably rotate in the center of circle along its lower contact then.Remain the state that closely reclines and small rising is arranged between backplate ［ 3 ］ and fire grate ［ 5 ］, do not produce the gap therebetween, avoid both sides coal to leave out by mistake.Because two body side frames system adopts many framings ［ 1 ］ to form, different or can adjust flexible voluntarily with the different swell increment of the fire grate ［ 5 ］ of corresponding contact separately when changing to some extent when siege front and back end temperature, its maximum swell increment can the time be defined as 5mm in design, and this moment, fire grate promptly leaned with the lower limb of framework ［ 1 ］.

Accompanying drawing: the horizontal reciprocal grate side-sealing device (side view) that floats

Part sequence number explanation: 1. framework 2. support plates 3. backplates 4. furnace grate supports 5. fire grates

Claims

1, the unsteady side-sealing device of a kind of horizontal reciprocal grate, it is made up of framework [1], support plate [2] and backplate [3], it is characterized in that: be fixed on to float in the framework [1] on the furnace furnace grate support [4] support plate [2] and backplate [3] are housed, backplate [3] leans on its rear portion boss and is supported by the support plate [2] that withstands on framework [1] inferior horn root.

2, sealing device according to claim 1 is characterized in that described framework ［ 1 ］ is the uncovered of inclined plane in the face of fire grate one side has the upper and lower opening limit, and the inferior horn root is provided with the boss that matches with support plate ［ 2 ］ low groove.

3, sealing device according to claim 1 is characterized in that described support plate ［ 2 ］ lower end and upper end have the groove that matches with framework ［ 1 ］ and backplate ［ 3 ］ boss.

4, sealing device according to claim 1 is characterized in that described backplate ［ 3 ］ upper and lower side is equipped with and framework ［ 1 ］ mouthful corresponding inclined plane, limit, and the rear portion is provided with the boss that matches with support plate ［ 2 ］ upper groove.