CN103154614A

CN103154614A - Hydraulic drive for a sliding combustion grate

Info

Publication number: CN103154614A
Application number: CN2011800474996A
Authority: CN
Inventors: 马丁·斯蒂费尔
Original assignee: Doikos Investments Ltd
Current assignee: Doikos Investments Ltd
Priority date: 2010-07-30
Filing date: 2011-07-27
Publication date: 2013-06-12
Also published as: WO2012013700A3; BR112013002139A2; US20130118469A1; JP2013535648A; EP2598800A2; EA201300035A1; CH703509B1; WO2012013700A2; KR20140000188A; CA2806931A1; CH703509A2

Abstract

The invention relates to a hydraulic drive for a water-cooled sliding combustion grate. Each displaceable grate stage (6) is connected to at least one connection rod (30) supported at the other end thereof on a crank (31), wherein the associated crankshaft (32) is supported in a bushing (33) penetrating the side wall (2) of the grate construction. A crank (34) connected to the piston (35) of a hydraulic cylinder-piston unit (36, 35) is seated on the other side of the crankshaft (32), outside of the actual grate construction of the associated grate run, where said hydraulic cylinder-piston unit is disposed. The hydraulic components are thereby spaced further away from grate plates, and not exposed to abrasion. Said components, being disposed remotely from the grate plates (6), can also be replaced during operation of the grate.

Description

The fluid pressure drive device that is used for the slip incineration grate

Technical field

The present invention relates to the drive unit for the water-cooled slip incineration grate of garbage burning factory, this garbage burning factory is specially adapted to have the burning of rubbish and the waste material of golf calorific value.This slip incineration grate has by grate plate and consists of or be arranged on the form of ladder rigid grate layer and the mobile fire grate layer that the top of each other forms by row furnace grid and a grate plate.These burning charging fire grates can be installed by this way: the placement of burning bed substantial horizontal or inclination, generally tilt with 20 ° or more perspective.Grate plate is preferably made by sheet metal, and forms the tabular hollow body that extends on the whole width in fire grate road.Water passes through in hollow body as refrigerant.Every a grate plate, be provided with a grate plate that can vertically move, therefore can complete and slide or the charging stroke.With regard to the charging fire grate, mobile grate plate can use its rear side that the incinerator furnace charge is shifted onto on next lower floor grate plate.On the other hand, oppositely the charging fire grate forms inverted, complete in fact, inclined ladder that have overlapping ladder.With regard to reverse charging fire grate, the incinerator furnace charge of its rear side is taken back in the front side of mobile grate plate, and then furnace charge is pulverized downwards on the incline direction of fire grate again.This moves grate plate, namely moves around on the descent direction of each grate plate in its inclination between two rigid grate plates.So just guaranteed the movement that continues and be distributed on fire grate equably in the waste material that burns on fire grate can the high retention time at 45-120 minute.

Background technology

European patent document EP-0621449 discloses a kind of water-cooled slip incineration grate.This fire grate is included in the grate plate that extends on the whole width in fire grate road, and each fire grate layer does not comprise a plurality of fire bars.Similar with the rigid grate plate, this back side of moving grate plate is fixed on cross bar, and this cross bar moves forward together in running and moves backward, thereby mobile grate plate is moved.European patent document EP0874195 discloses a kind of special construction that has for the fire grate of unique drive unit of each independent mobile fire grate layer.This moves grate plate and moves on steel rider, and is guided by side direction along the side direction end plate on horizontal steel rider.Drive unit realized by each hydraulic piston cylinder unit, this hydraulic piston cylinder unit approximately the rear side of grate plate drive grate plate near the center and be positioned at grate plate under.

Existing drives structure is positioned at below fire grate, this means that relevant hydraulic piston cylinder unit also is positioned at below fire grate.The hydraulic piston cylinder unit is difficult near grate plate, and especially in the fire grate running, due to Current Temperatures and due to the slag that may fall into by fire grate, the hydraulic piston cylinder unit is more difficult near grate plate.

Summary of the invention

Thus, the objective of the invention is to create a kind of fluid pressure drive device for water-cooled slip incineration grate, it operates safe especially, can cost-efficient manufacturing and be easy to install.And this drive unit is easy to maintenance, can be near this drive unit in burn operation.And the operation that need not to interrupt fire grate just can be replaced the hydraulic piston cylinder unit of each drive unit of grate plate.

Purpose of the present invention realizes by the fluid pressure drive device that is used for water-cooled slip incineration grate, and wherein, each of grate structure moves the fire grate layer and be connected at least one connecting rod, and this connecting rod is supported by the crank of its other end.Wherein, the crank axle related with above-mentioned crank supported by the sleeve pipe of the sidewall that passes grate structure, and the crank that is connected with the piston of hydraulic cylinder piston unit is positioned at the opposite side of bent axle.

Slip incineration grate with conventional hydraulic drive unit has been described at first in the accompanying drawings, has then introduced this special fluid pressure drive device here.The below will further illustrate this drive unit and function thereof by these accompanying drawings.

Description of drawings

Fig. 1 is the perspective view of having removed the slip incineration grate of part grate plate;

Fig. 2 is the sectional side elevation in the fire grate road that is integrated with the conventional hydraulic drive unit with its below, visual angle perpendicular to the fire grate road;

Fig. 3 is fire grate framework and the minor structure that does not comprise the fire grate of grate plate, namely from the profile of the fire grate shown in Figure 1 in the place ahead;

Fig. 4 is be used for integrating along the support unit between two hollow profiles of fire grate from the place ahead;

Fig. 5 is the mobile grate plate from the below;

Fig. 6 is for from the schematic perspective view of top diagonal according to the fluid pressure drive device for single mobile grate plate of the present invention;

Fig. 7 is the profile in the fire grate road of fluid pressure drive device, and it is outside that this fluid pressure drive device is arranged in the sidewall of grate plate in figure left side;

Fig. 8 is the profile with two adjacent fire grate roads of fluid pressure drive device, and in this figure, the fluid pressure drive device of the grate plate in left side adopts the sheet metal shell as protective cover to cover.

The specific embodiment

How the basic structure of slip incineration grate and significant components thereof realizes in construction process, with and minor structure obviously illustrate in Fig. 1, not shown independent grate plate here.Relate to fire grate downward-sloping on flow direction herein.Article two, steel wall 1,2 upright, transversely is parallel to each other, and by cross bar 3,4 connection fastened to each other.These cross bars 3,4 extend through the inner width of two vertical steel walls 1,2 perpendicular to fire grate and on differing heights.Two steel walls 1,2 of fire grate left and right can comprise a plurality of sheet metals that are threaded mutually by rights, or other parts.Cross bar 3,4 runs through two vertical vertical steel walls 1,2 from two ends, and is tightened on vertical steel wall 1,2 by taper joint and nut.Cross bar or crossbeam 3 also are used as the cramp bar of the rigid grate plate 5 that is positioned at its top.The leading edge next-door neighbour of bottom rigid grate plate 5 discharges edge part 7, and on the position that this discharge edge part 7 is welded between vertical steel wall 1,2, and the rear portion of rigid grate plate 5 is suspended in the top of first cross bar or crossbeam 3.Be mobile grate plate 6 with next grate plate in row, its front root edge rests on first following rigid grate plate 5.The rest may be inferred, and the front root edge of next the highest rigid grate plate 5 correspondingly rests on mobile grate plate 6.The front side of the inclination of

single grate plate

5,6 is penetrated by leading air drain 8, and the primary air that is used for burning is blown into from below in the furnace charge of incinerator by this air slot 8.For being positioned at two rectangular tubes 9,10 at its top with offset manner slightly, the square tube bottom seals by welding, so rectangular tube is welded on the steel wall along the upper end of steel wall 1,2.This rectangular tube 9,10 has consisted of the side plate in fire grate road, and limits the side of burning charging bed when fire grate moves.Rectangular tube 9,10 is water-cooled and is all poured water forcibly from bottom to top, thereby its inside is full of water always fully.

Single grate plate

5,6 is made and is designed to the hollow body of being poured water forcibly by steel plate, make its inside be full of water fully always, and do not have bubble to may reside in inside.Alternatively, grate plate comprises scaffold, wherein, inserted in scaffold refrigerant can free-pouring hollow body as cooling body, grate plate can cover to guarantee good heat transmission with the wear strip of scaffold and cooling body interlocking by one whereby.No matter all steel plate parts of fire grate are rectangular tube 8,9 or the

grate plate

5,6 that contacts with the incinerator furnace charge, and what all continue at the back side of steel plate is coated with water or is dispelled the heat by the water-cooled low-temperature receiver at least.Therefore the cooling and maintenance constant temperature that continued of all parts that contact with fire, thus can expand hardly.This has just eliminated necessity of the compensating element, that the grate plate of any type side is provided.The stability of grate structure realizes by cross bar or crossbeam 3,4 basically, as previously mentioned cross bar or crossbeam parallel support and reinforce two outer steel walls 1,2 on two height.Between two height of these cross bars 3,4, with the form of rectangular tube 11,12, two other hollow profile is being set along fire grate in both sides, fire grate center, it is connected with the bottom at the top and connects cross bar 3,4 on some points, and perpendicular to cross bar.One of them rectangular tube, namely rectangular tube 11, cooling water delivered to

grate plate

5,6 from the bottom to the top, and another rectangular tube 12 provides flushing and cooling-air for the Hydraulic Elements of the drive unit of mobile grate plate 6 simultaneously.The support unit 13 that is used for mobile grate plate 6 is arranged between two parallel rectangular tubes 11,12, and this support unit 13 is bolted on rectangular tube by two, two rectangular tubes 11,12 of this bolt-through.For this purpose, the interior stay that welded of this rectangular tube or hollow profile 11,12, the stay internal diameter is designed to hold the bolt for support unit 13.Support unit 13 oneself has the

steel rider

17,18 of steel rider 16 and the left and right sides separately, and steel rider 16 is set to be parallel to corresponding grate plate plane, and

steel rider

17,18 acts on vertical plane.Until hydraulic cylinder-piston mechanism 21 with piston 22 has been installed at support unit 13 with between the mobile grate plate in support unit the place ahead, mobile grate plate 6 just can not tumble (roll off) from the terminal horizontal steel rider 16 that serves as the side direction guiding device that is positioned at its rear side.On lath, namely on rectangular tube 9,10, two horizontal steel riders 19,20 are constructed for each moves grate plate 6, and these rolls are guided to grate plate from the outside by side direction.

Fig. 2 shows the vertical section in the fire grate zone of the conventional ADS driving that has from the side mobile grate plate 6.The piston rod 22 that can find out hydraulic cylinder 21 arrives at mobile grate plate 6 inside, and this hydraulic cylinder 21 is hinged to support unit 13 by its rear side.At the rear portion, grate plate 6 moves on the roll 17 of support unit 13, and this support unit 13 is fixed on rectangular tube 11,12 by two bolts 14,15.Each of these support units 13 can recede by the bolt 14 that removes the back, then can be near the pivoting point of hydraulic cylinder 21, thus can remove easily hydraulic cylinder.But this only just can occur after fire grate is out of service.Can identify that the rectangular tube 10 that has formed lath is positioned at

grate plate

5,6 back and with the below of the sidewall 2 of crossbeam 4.

With regard to structure so far, as shown in Figure 2, fluid pressure drive device is positioned under grate plate, and for eliminating any disaster hidden-trouble below fire grate, such structure now is removed.Hydraulic cylinder 21 with piston rod 22 is replaced again by the mechanical connection bar, this mechanical connection bar is hinged to crank and the crank axle that is associated with this crank passes sidewall 1 from the outside, one of 2, thereby as illustrated subsequently, hydraulic package is intercepted fully in the outside of grate structure.

Fig. 3 shows the grate structure that do not comprise grate plate as shown in Figure 1 from the front and the profile of fire grate framework.Here can find out sidewall 1,2, the lath that occurs with rectangular tube 9,10 forms and crossbeam 3,4 and the rectangular tube 11,12 that extends in the centre along fire grate.From the single support unit 13 of front, be used for the horizontal steel rider 16 of the mobile grate plate 6 of level guiding and illustrated by Fig. 4 for the

vertical steel rider

17,18 that transports mobile grate plate 6.

Fig. 5 shows single grate plate 6 or scaffold from the below.Horizontal steel rider 16 is positioned on groove 23 on support unit 13.The inner width of groove 23 is come to determine by this way: be slightly larger than the diameter of horizontal steel rider 16, by this horizontal steel rider 16, grate plate can be in the horizontal suitably guided to the fire grate road from horizontal steel rider 16.Be positioned at the front side that steel rider 19,20 (Fig. 1) on lath 9,10 is used for guiding mobile grate plate.Mobile grate plate 6 has such groove 24,25 in its bottom, front side, have the boot section 26,27 of the side that is parallel to grate plate 6 in each side of groove, but mobile grate plate 6 is by reorientating near this side.This steel rider 19,20 rolls along this boot section during moving back and forth, so each moves grate plate 6 and in fact has three-point support.Middle rear in the drive unit position, grate plate 6 is by the steel rider 16 of correspondence, 17, the guiding of 18 horizontal and verticals, when the front feather edge of grate plate 6 rests on next lower rigid grate plate 5 and when it moves around and slides on rigid grate plate 5, forwardly, grate plate 6 is guided to the left and right of steel rider 19,20 by side direction.

The below that is located immediately at present fire grate according to structured liquid cylinder pressure 21 and the fluid pressure line thereof of aforesaid each Fig. 1, Fig. 2, and all parts all are exposed to downward ventilated environment, the impact that this can make these parts be denuded for many years.The purpose of following drives structure is clear and definite a kind of optional structure, wherein, only have the hoisting machinery part (himself does not comprise any other parts) of drives structure to be subject to the impact of the abrasion of ventilating downwards, and be positioned at the fire grate outside to denuding responsive drive part.

Fig. 6 shows from the top cornerwise visual angle for the fluid pressure drive device of single grate plate 6.The hydraulic cylinder of grate plate below is substituted by a connecting rod 30, and this connecting rod 30 is hinged to

crank

31, and 31, crank is positioned on crank axle 32.Crank 31 has slotted hole 38, and the bolt 39 of connecting rod 30 is installed in this hole.Its reason is, its end is not carried out linear movement when crank 31 comes back rotation at a certain angle on axle, and connecting rod 30 must be shown in its stroke directions Linear as double-head arrow and move back and forth.Crank axle 32 is by sleeve pipe 33 supportings, and this sleeve pipe 33 runs through the sidewall 2 of grate structure and firmly welds or be threaded in the above.In the outside of grate structure, crank axle 32 disposes another crank 34 of piston rod 35 ends that are hinged to hydraulic cylinder 36.

Crank 31,34 can be inserted in simply the crank the tip of the axis and be guaranteed firmly by lock nut.For its other end, hydraulic cylinder 36 is hinged to the fixed mount 37 in sidewall 2 outsides of being fixed in grate structure.The axle of sleeve pipe 33 is perpendicular to the direction of motion of mobile grate plate 6.The crank on crank axle 32 31 that is used for connecting rod 30 turns over about 120 °-180 ° with respect to the crank 34 of crank axle 32 other ends and installs.During this other end action when crank 34 at crank axle 32, crank axle 32 is done corresponding rotation, and grate plate 6 is along with the seesawing of piston 35 that relies on hydraulic cylinder piston unit 36 correspondingly moved forward backward.Crank axle 32 can be by means of 0 °-about 60 ° of the control rotations of the system of hydraulic cylinder piston unit 35,36.Thereby the variation that the degree of the thrust of mobile grate plate 6 can continue.

By this drives structure, hydraulic package be positioned at the position of fire grate further away from each other and no longer be positioned at fire grate under.Each independent mobile fire grate layer can rely on the hydraulic cylinder piston unit on separately the sidewall 2 that is fixed in the grate structure outside to operate respectively.

Fig. 7 shows the profile in the fire grate road of seeing from the rear portion on the direction of motion of mobile grate plate.Connecting rod 30 is hinged to the groove that is positioned at grate plate 6 bottoms, and to being connected in crank 31 through bolt 39, crank 31 is connected in crank axle 32 to connecting rod 30 neatly, and crank axle 32 is bearing on sleeve pipe 33 by removable sliding bearing 40.Sleeve pipe is connected on the sidewall 1 of grate structure 2 securely through blade pole 41.Corresponding groove on the sidewall 1 or 2 of blade pole 41 and grate structure is combined and is welded on groove.Drive unit is positioned at opposite side, and its crank 34 and piston rod 35 are described by the profile here.

Fig. 8 shows the solution of drive unit when a plurality of

fire grates road

28,29 is close to each other.The feed pipe of grate plate 6 represents by 43, and the drainpipe that is marked at the grate plate on right side represents by 44.The hydraulic cylinder 36 of above-mentioned drive unit is positioned at the outside in the first fire grate road 28 fully, but still is positioned at the below of the grate plate 6 in the fire grate road 29 that is connected to this side of fire grate.But this situation has guaranteed hydraulic cylinder 36 and has been positioned at than before and the initial scheme of the describing position of grate plate 6 further away from each other.Further, hydraulic cylinder 36 and feeding hydraulic tube thereof and water-dis-placing liquid pressure pipe by iron-clad 42 around, it is covered by iron-clad fully from the top, and only its piston rod stretches out from a side in the hole of sheet metal shell 42.Therefore, thus in Fig. 8, piston rod stretches out driving crank 34 backward from sheet metal shell.

Clearly, this driving that is used for as shown each independent mobile grate plate 6 can arrange for repeating, and each side in fire grate road all has the piston cylinder unit.Further can realize that all grate plates of fire grate are set to movable plate.The piston cylinder unit also can finally be positioned on other installation direction according to steric requirements.The sidewall outside is arranged and be arranged on to indivedual hydraulic cylinders can also be above each other with the form of ladder.As for the cylinder that vertically arranges, the crank on crank axle must half-twist.With regard to the cylinder that is obliquely installed with 45 °, it should correspondingly rotate 45 ° with the executing agency shown in figure in the counterclockwise direction.In order to obtain some spaces, but the multiple alignment of alternate selection.

Claims

1. fluid pressure drive device that is used for water-cooled slip incineration grate, wherein, each moves grate plate (6) and is connected at least one connecting rod (30), connecting rod (30) is supported on crank (31) by its other end, it is characterized in that, the crank axle (32) that is associated with above-mentioned crank (31) is by sleeve pipe (33) supporting of the sidewall that runs through grate structure (2), and with the hydraulic cylinder piston unit (36 that is positioned on grate structure, 35) crank (34) that piston (35) connects is positioned at the opposite side of described crank axle (32), described hydraulic cylinder piston unit (36, 35) be positioned at the outside of actual grate structure in the fire grate road of associated.

2. the fluid pressure drive device for water-cooled slip incineration grate according to claim 1, it is characterized in that, the axle of described sleeve pipe (33) is perpendicular to the direction of motion at described mobile grate plate (6), to install with respect to 120 °-180 ° of described crank (34) rotations of the described piston (35) that is used for described hydraulic cylinder piston unit (36,35) of the other end that is arranged on described crank axle (32) at the upper described crank (31) that is used for described connecting rod (30) of described crank axle (32).

3. the fluid pressure drive device for water-cooled slip incineration grate according to claim 1 and 2, it is characterized in that, described sleeve pipe (33) comprises the interchangeable bearing (40) for the described crank axle (32) that inserts, described crank (31,34) is inserted into the end of crank axle and is fixed by lock nut.

4. according to claim 1-3 arbitrary described fluid pressure drive devices for water-cooled slip incineration grate, it is characterized in that, described sleeve pipe (33) comprises and is at least two blade poles (41) that radial and interval arranges, corresponding groove on the described sidewall (1,2) of described blade pole and described grate structure in conjunction with and be welded on above.

5. according to claim 1-4 arbitrary described fluid pressure drive devices for water-cooled slip incineration grate, it is characterized in that, two fire grate roads (28 for setting adjacent one another are, 29), described hydraulic cylinder piston unit (35,36) be positioned at fire grate road (29) below, himself and the fluid pressure line that is located thereon section thereof by sheet metal thin plate (42) institute around, make and only have described piston rod (35) to stretch out from described sheet metal thin plate (42).

6. according to claim 1-5 arbitrary described fluid pressure drive devices for water-cooled slip incineration grate, is characterized in that, each moves grate plate (6) and is furnished with two described drive units.

7. according to claim 1-6 arbitrary described fluid pressure drive devices for water-cooled slip incineration grate, is characterized in that, the described piston cylinder unit of drive unit is arranged on different directions.