CN2361982Y

CN2361982Y - Improved bedding coal-feeding device

Info

Publication number: CN2361982Y
Application number: CN 98212773
Authority: CN
Inventors: 石建成
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-05-04
Filing date: 1998-05-04
Publication date: 2000-02-02
Anticipated expiration: 2008-05-04

Abstract

The utility model relates to an improved bedding coal-feeding device, which is mainly composed of a coal scuttle, a coal controlling gate, a coal distributing roller, an inclined screen, a bridge breaking structure and a block resisting structure. An easy bridging position of the coal scuttle is provided with a roller with teeth and a swinging and sliding rod or a movable coal guiding plate. The utility model can solve the abuse that wet coal is easy to bridge without falling coal in an ordinary device. The lower part of the coal controlling gate is provided with a plurality of elastic baffle plates or the coal controlling gate is arranged in a sloping mode, and the utility model can prevent lump coal from blockage.

Description

Modified layered charge coal for boiler device

The utility model relates to the improvement of just changeing the chain-grate boiler layering coal supply apparatus.

At present, be applied to just change the layering coal supply apparatus of chain-grate boiler, loose because of its coal seam of falling on the fire grate, coal leaks coal and flowing resistance and significantly reduces by the granular size layering, and the burn-off rate of coal improves greatly.So be subjected to user's very big favorable comment, but in use, still can find out the following disadvantage of ubiquity:

1, the water content to coal requires tighter.When coal is drier, following coal better, when water content reaches the optimum value of steam coal (8-10%) work not too normal, cisco unity malfunction fully then when water content is higher.Because of various reasons, many applying units are difficult to guarantee this requirement, and this has just increased fault rate.

2, the bigger then jam between control coal flashboard and cloth coal cylinder very easily of lump coal gently then makes the cloth coal can not be evenly smooth, and is heavy then the transmission safety plug is cut off or slipping of clutch, and the coal that will break of discovery in time is flame-out, even discovery in time also gets shutdown maintenance.Even user's steam coal is through fragmentation, also very difficult assurance drops into than gathering coal, and this also makes fault rate increase.

3, because of structural limitations, hold the coal space and suitable for readingly greatly reduce than former coal bunker, because of the last young linking trouble that connects coal bunker on original that makes, hold the little palpus that does not connect coal bunker that then makes in coal space and frequently go up coal.Increase workman's operational ton.

The utility model is to provide a kind of follow-on layering coal supply apparatus that overcomes above-mentioned disadvantage.

The purpose of this utility model is to realize like this.

1, the problem of wet coal under not, be because wet coal cohesive force increases, the concreteness increase is easily taken the bow member bridge and is not fallen reason on the cloth coal cylinder, by practice as can be known, this kind arch formation stirs slightly or shakes and can be destroyed, easy bridge formation position at coal bunker adds toothed rotor described in the embodiment, and swing is drawn a lever apparatus and stirred, or uses movable coal guide plate vibrations shown in Figure 2 and get final product.

2, lump coal jam problem

One of solution is established the polylith elastic baffle in former control coal flashboard bottom, and during jam, its power surpasses the elastic force of elastic baffle to lump coal, and baffle plate is made a concession to the back upper place between lock and cylinder, and lump coal i.e. mistake, and backboard restores rapidly under the elastic force effect.

Two of solution: oblique lock: control coal flashboard upper end recedes in vertical direction with 20-50 ° of angle, lower edge is crossed the vertical center line of cylinder to holding the coal direction in space, keeping under the constant situation of angle of repose like this, the flashboard lower edge is bigger apart from the distance of cylinder, thereby the lump coal that can pass through also can bigger and unlikely jam, even lump coal is because of blocking between cylinder and flashboard too greatly, be the whole jack-up of flashboard can being passed through of inclination also because of flashboard, the unlikely transmission safety plug that makes is cut off or slipping of clutch, significantly reduces fault rate.

3, using oblique lock can solve former decker simultaneously holds the coal space and goes up young problem.

Below be two embodiment of the present utility model.Fig. 1, Fig. 2 are respectively the structural representation of two embodiment

Embodiment one: see accompanying drawing 1, the movable elastic baffle of polylith (1) is installed in the bottom of control coal flashboard (3), except that two at two ends, it is concordant that lower edge keeps mutually, when coarse coal at cylinder during with jam therebetween, promptly by after upper left side jack-up (as shown in phantom in FIG.) lump coal passes through, under the effect of torsionspring (2), baffle plate resets rapidly the 1-2 piece baffle plate at this place.

Swing is drawn bar (4) and is swung (transmission mechanism omits and do not draw) under cylinder or fire grate main shaft drive, can destroy at any time in the hunting range and near wet coal arch formation, this structure is applicable to that cross section, bridge formation place is hour.

Embodiment two: see Fig. 2, because of it is not crossing on the vertical curve of centre of the drum like the flashboard of former decker (among the figure shown in the dotted line), but lower edge is offset a segment distance to holding the coal direction in space, dying, to be the tangent line and horizontal angle (being the angle of repose of the coal) α of cylinder certain for its lower edge, promptly control following coal amount one timing in the unit interval, the distance of flashboard lower edge and cylinder is bigger, and then the lump coal that can pass through also can be bigger.

Movable coal guide plate (2) (4) device is holding bottom, coal space, replace former fixedly coal guide plate (among Fig. 1 they (5)), its lower edge is close to the surface, outer garden of cylinder (1), when cylinder (1) when rotating counterclockwise, the rib of solid welding on it stirred down coal guide plate (2) around upwards swing of tip axle (3), coal guide plate (2) falls because of the effect of own wt (also can add elastic force) under after being at the end, coal guide plate on the bump (4) and make and all produce vibrations each other, make and be easy to be slipped on the cylinder because of the big inadequately original coal that is difficult for landing thereon in inclination angle becomes, so just can increase and hold the coal space, diameter of cylinder is done lessly, and makes coal-based the elimination of leakage on cylinder right side.Lighter bridge formation also can be eliminated by this in the lump.

Toothed rotor (6) also is drawn among Fig. 2 in the lump as one of broken bridge construction of wet coal, and is the same with swing stroke bar, also installs at the easy bridge formation position that holds the coal space, and it is applicable to when cross section, bridge formation place is big.

Two kinds of anti-lump coal jams and three kinds of structures that broken wet coal is built bridge in the various embodiments described above, visual in actual applications concrete condition selects collocation to use.

Claims

1, to the modified layering coal supply apparatus that just changes the chain-grate boiler coal supply, it is characterized in that: primary structure removes coal bunker, the control coal flashboard that the generic hierarchical coal feeder is used, outside cloth coal cylinder and the slanted screen, at the easy bridge formation position of coal bunker toothed rotor is housed in addition, bar or the broken bridge construction of movable coal guide plate conduct are drawn in swing; In control coal flashboard position device polylith elastic baffle or the anti-lump coal jam structure of oblique lock conduct.

2, device as claimed in claim 1 is characterized in that: polylith elastic baffle device is in control coal flashboard bottom, and except that two at two ends, it is concordant that all the other lower edges keep mutually.

3, loading amount as claimed in claim 1 is characterized in that: tiltedly the lock upper end recedes in vertical direction with 20 °～50 ° angles, and the vertical center line of cylinder is crossed to holding coal space side in the lower end.