CN1373728A

CN1373728A - Device for dosage of loose materials

Info

Publication number: CN1373728A
Application number: CN00812666.6A
Authority: CN
Inventors: 埃米尔·洛纳迪; 乔瓦尼·西门蒂
Original assignee: Paul Wurth SA
Current assignee: Paul Wurth SA
Priority date: 1999-09-21
Filing date: 2000-08-28
Publication date: 2002-10-09
Anticipated expiration: 2020-08-28
Also published as: ATE249989T1; EP1214259B1; CN1186238C; DE60005377D1; AU6999900A; LU90442B1; DE60005377T2; WO2001021510A1; EP1214259A1

Abstract

The invention concerns a device for dosage of (10) materials, comprising first (18) and second (20) rotary registers. Shafts (24, 26) arranged on either side of the registers (18, 20) support the two registers and enable them to rotate about a common axis of rotation (25). One first (24) shaft is arranged on one side of the two registers (18, 20), and a second shaft (26) is arranged on the opposite side. A driving mechanism is connected to the shafts (24, 26) to rotate the two registers (18, 20) in opposite directions. Each rotary register (18, 20) is maintained by a first suspension arm (28, 30) and by a second suspension arm (32, 34), which extend on either side of the respective register. The first shaft (24) and the second shaft (26) are driven in opposite directions by the driving mechanism. The first suspension arm (28) of the first register (18) is removably attached to the first shaft (24) and the first suspension arm (30) of the second register (20) is removably attached to the second shaft (26). The second suspension arm (32) of the second register is connected in articulation to the first suspension arm (28) of the first register and the second suspension arm (34) of the first register is connected in articulation to the first suspension arm (30) of the second register.

Description

The device of dosage of loose materials

Technical field

The present invention relates to a kind of gauging device of bulk material, specifically, relate to the device of the dosage of loose materials that a kind of shaft furnace charging uses.

Background technology

For example, in patent application EP-A-0062770, announced a kind of gauging device of this class bulk material; This device cooperates with the outlet of a hopper that is installed in blast furnace top.This gauging device is concentric with the axis of blast furnace; And, in a closure casing, comprising two gates that have the sphere quadrntnt form of vee shape otch, one of them gate is at another above gate.One end of these two gates is bearing on the same pivot; And can freely rotate around this pivot.This pivot suspension is on the clutch shaft bearing of this closure casing.In a side relative with this clutch shaft bearing diametric(al), one becomes a single-piece axle with the top gate, is placed in the quill drive, and concentric with this quill drive; This quill drive then becomes as a whole with the bottom gate.This quill drive is bearing on second bearing of this closure casing.Be installed in a driver train of this closure casing outside, drive above-mentioned two concentric axles, make the synchronously motion in the opposite direction of these two gates.For example, in patent application EP-A-0134918, this driver train has been described.

When these two gates synchronously in the opposite direction moved, above-mentioned two otch moved together, formed and change the cross-sectional plane of outlet, thereby discharging around this blast furnace axis symmetrically.Yet this gauging device is bulky, and the work of replacing gate is very complicated.Gate in the charging apparatus of blast furnace is a wearing parts, needs often to change; Therefore, the replacing of gate is carried out easily.

Summary of the invention

The objective of the invention is to provide a kind of gate gauging device of replacing easily.Utilize the described gauging device of claim 1 of the present invention, can reach this purpose.

Bulk material gauging device according to the present invention comprises: first Rotary grate and second Rotary grate; Be arranged on each side of gate, be used to the axle that supports these two gates and these two gates are rotated around a public rotation axis.Primary shaft in the described axle is in a side of two gates; Second in the described axle at opposite side; A driver train is connected with these two, and two gates are rotated in an opposite direction; According to an important aspect of the present invention, each revolution gate is by first suspension arm that stretches out from each side of corresponding gate and the supporting of second suspension arm; The described primary shaft of described drive mechanism and described second rotate at different directions.Described first suspension arm of described first gate removably is fixed on the described primary shaft; Described first suspension arm of described second gate removably is fixed on described second; Described second suspension arm of described second gate is connected with described first suspension arm of described first gate, and is bearing on this first suspension arm with the turning joint form; Be connected with described first suspension arm of described second gate with described second suspension arm of described first gate, and be bearing on this first suspension arm with the turning joint form.This can allow a gate part is entirely taken off, and therefore changes easily.In order entirely gate part to be taken off, all work that need do are exactly that first suspension arm of first gate is pulled down from primary shaft; With first suspension arm of second gate is pulled down from second.Then, can take out gate part up or down.

According to a preferred embodiment, described first suspension arm of described first gate comprises first mounting flange; Described primary shaft comprises first plain flange.Described first flange is fixed on the described plain flange removably Face to face; Described first flange comprises first pivot that stretches out from a side relative with described first plain flange; Described second suspension arm of described second gate is with turning joint form and described first pivotal joint.Equally, described first suspension arm of described second gate comprises second mounting flange; Described second comprises second plain flange; Described second flange is fixed on described second plain flange removably Face to face; Described second flange comprises second pivot that stretches out from a side relative with described second plain flange; Described second suspension arm of described first gate is with turning joint form and described second pivotal joint.Because these flanges and plain flange, first suspension arm of each gate can be pulled down from corresponding axle apace.All work that need do are exactly, and back out screw, and flange and plain flange are taken apart, can take out gate part up or down.

Best, between described first suspension arm of described second suspension arm of described second gate and described first gate, an endplay is arranged on described first pivot; And between described first suspension arm of described second suspension arm of described first gate and described second gate, an endplay is arranged on described second pivot.When taking out gate, can promote this two first suspension arms toward each other, they are slided on corresponding pivot.Can reduce the endplay between each suspension arm on the above-mentioned pivot like this, and between above-mentioned flange and plain flange, form a gap, so that take off gate part.

In a special simple embodiment, gate no longer is a sphere quadrntnt form, but the cylindrical shape quadrntnt, it has the otch of a suitable shape, for example a vee shape otch.

The gate of cylindrical shape quadrntnt form is preferably with an escape route; When gate during at off position, gate is blocked this passage fully.When off position, gate partly overlaps each other, and is positioned at below the lower edge of this escape route.This passage lower edge shape is made step cylinder of imaging, and the shape of this shape and two partly overlapping gates is very close.Therefore, when off position, material can not be discharged from this escape route.

According to a preferred embodiment, this driver train comprises a main shaft and two connecting rods; Each axle in these two comprises a crank; Described connecting rod makes described main shaft and described crank connecting link, in the opposite direction produces two rotations.Use a main shaft and two bonded assembly advantages to be, can make two to do to rotate synchronously.Main shaft is around the rotation of its longitudinal axis, and a for example available hydraulic actuating cylinder is realized.According to hydraulic cylinder piston is to stretch out or withdraw, but the direct drive main shaft is done accurate the rotation in a direction or another direction.

Description of drawings

Other characteristics of the present invention and feature, from below in conjunction with accompanying drawing to understanding the DETAILED DESCRIPTION OF THE PREFERRED.Wherein:

Fig. 1 is according to a preferred embodiment of the present invention, has the transparent view of the gauging device of gate;

Fig. 2 is the fragmentary cross-sectional view of suspension gear of the gate of device shown in Figure 1;

Fig. 3 is in the process of taking off, the back view of device shown in Figure 1;

Fig. 4 is the back view of the device shown in Figure 1 of expression gate driver train;

The shown in Figure 4 assembly of Fig. 5 for seeing from the left side;

The shown in Figure 4 assembly of Fig. 6 for seeing from the right;

Fig. 7 is the section drawing at gauging device off position, shown in Figure 1;

Fig. 8 is at section drawing open position, gauging device shown in Figure 1.

Identical label in the accompanying drawing is represented same or identical part.

The specific embodiment

Fig. 1 represents the transparent view of the gauging device 10 of bulk material according to a preferred embodiment of the present invention.The end of an abrasion resistant cone 12 of material storing cavity 14 is for being positioned at blast furnace upstream and cylindrical outlet passage 16 (not shown)s above the blast furnace.Gauging device 10 is placed on below the material storing cavity 14, in a closure casing 17 between this material storing cavity 14 and blast furnace (representing with two wall portions among the figure).Below the bottom end of above-mentioned cylindrical outlet passage 16, this gauging device comprises first or top gate 18 and be positioned at second or bottom gate 20 below the top gate 18 (also can referring to Fig. 7).Be located at two 24 and 26 these two gates of supporting of

gate

18 and 20 each side; And can make these two gates rotate (also can referring to Fig. 3) round a public rotation axis 25.Do not illustrate among Fig. 1, but in Fig. 4～Fig. 6, be expressed as a driver train of assembly 27, synchronously in the opposite direction drive these two 24 and 26 and rotate, make the center outlet opening that between these two

gates

18 and 20, forms a rhombus at the vee shape otch 22 on gate 18 and 20.As seen from Figure 7, the otch 22 of top gate 18 is covered by bottom gate 20.When

gate

18 and 20 was on this position, gauging device 10 was in off position, can stop material to be discharged from above-mentioned escape route 16 fully.

Each

gate

18 and 20 extends to first suspension arm of opposite side and the supporting of second suspension arm by the side from corresponding gate.First suspension arm 28 of top gate 18 is removably mounted on the primary shaft 24.First suspension arm 30 of bottom gate 20 is removably mounted on second 26.Second suspension arm 32 of bottom gate 20 is connected on first suspension arm 28 of top gate 18 with the turning joint form; And second suspension arm 34 of top gate 18 is connected on first suspension arm 30 of bottom gate 20 with the turning joint form.These two 24 and 26 of drive mechanism rotate in an opposite direction, and these two gates are opened and closed.

Fig. 2 represents the fragmentary cross-sectional view of second 26 end.The end of first suspension arm 30 of bottom gate 20 is a mounting flange 36, and this flange 36 for example utilizes screw to connect, removably with second 26 on a plain flange 38 fixing.Flange 36 comprises a pivot 40, and this pivot 40 stretches out from a side relative with plain flange 38, and second suspension arm 34 of supporting top gate 18; Therefore this second suspension arm 34 is connected with the turning joint form with above-mentioned first suspension arm 30.Flange 36 and plain flange 38 make the form on two vertical fixing planes of face-to-face installation.Pivot 40 is positioned at the center with second 26 concentric flange 36.The end of second suspension arm 34 of top gate 18 is a suspention boss 42, the hole that has a pivot 40 to pass through in the boss 42; Therefore, second suspension arm 34 of top gate 18 is that turning joint connects on pivot 40.Sleeve 44 can reduce friction.

At opposite side, the assembly of primary shaft 24 identical with said structure (referring to Fig. 3).The end of first suspension arm 28 of top gate 18 is a mounting flange 46, and this flange 46 is fixed on the plain flange 48 of primary shaft 24.Flange 46 comprises a pivot 50, and this pivot 50 stretches out from a side relative with plain flange 48, and is supporting second suspension arm 32 of bottom gate 20; Therefore, this second suspension arm 32 is connected for turning joint with above-mentioned first suspension arm 28.The end of second suspension arm 32 of bottom gate 20 is a suspention boss 52, and boss 52 is with a hole that cooperates with a sleeve, and pivot 50 is by this hole.

Like this, each gate in the

gate

18 and 20 is first suspension arm of a flange and the supporting of second suspension arm that end is a supporting boss by end.Though first suspension arm of a gate is by a driving in above-mentioned two, and this same first suspension arm is supporting second suspension arm of another gate; Therefore, this second suspension arm is that turning joint is connected with described first suspension arm.It is that first suspension arm of a gate intersects with second suspension arm of another gate that this assembly is given people's eye impressions.

Take off gate 18 of the present invention and 20 very simple.In order fully each

first suspension arm

28 and 30 to be unloaded from

corresponding axle

24 and 26, required all that do are laid down screw exactly, each flange 36 and 46 are pulled down from corresponding plain flange 38 and 48 get final product.Like this,

suspension arm

28,30,32 and 34 forms a gate part with

gate

18 and 20, can these parts be taken out by the top or the bottom of above-mentioned closure casing 17.

In Fig. 2, can see, and between the supporting boss 42 of second suspension arm 34 of top gate 18, an endplay being arranged on pivot 40 at the flange 36 of first suspension arm 30 of bottom gate 20.This gap with at opposite side, an equal gap coupling on the pivot 50 on the flange 46 of first suspension arm 28 of top gate 18.When with flange when above-mentioned plain flange is pulled down, promote this

first suspension arm

28 and 30 toward each other, the gap between above-mentioned suspension arm flange and the supporting boss is reduced.As a result, form the gap between the relative flange on above-mentioned two, and gate member (that is: suspension arm and gate) can move easily.

In Fig. 3 of the back view of presentation graphs 1, this gap is represented with X.In order to dismantle this gauging device, wear-resisting cone 12 be taken off.A lifting beam 54 that cooperates with two side suspension hooks 56 can allow upwards to take out the parts that above-mentioned first and

second suspension arms

28,30,32,34 and

gate

18,20 constitute.For this reason, only need back out the screw of

first suspension arm

28 and 30, then these two suspension arms be promoted toward each other; And

axle

24 and 26 still remains on the original position.

Second suspension arm

32 and 34 slides on pivot 50 and 40 respectively.

Fig. 4 is another view that has shown the gauging device 10 of driver train.For

axle

24 and 26 can be rotated, each in these two is by 58 supportings of a bearings with rolling contact on the wall that is installed in above-mentioned closure casing 17.Have only terminal each part of 24,26 in above-mentioned plain flange 38,48 to be positioned at closure casing 17; And the remainder of this axle extend out to this housing 17 outsides.Be bearing in the main shaft 60 in the bearing 62 of closure casing 17 outsides, extend along the whole width of this gauging device 10; And utilize crank connecting link

system drive axle

24 and 26 to rotate.As shown in Figure 5 and Figure 6, at the

crank

64 and 66 of each 24 and 26 end, each is connected with 70 end with connecting rod 68.Connecting rod 68 utilizes

main crank

72 and 74 respectively, is connected with main shaft 60 with 70 the other end.Hydraulic actuating cylinder 76 utilizes an actuator crank 78 to be connected with main shaft 60; And main shaft 60 is rotated in two directions around its longitudinal axis.Obviously, this hydraulic actuating cylinder 76 can be used other actuating devices, and for example a turning motor replaces.

Control this driver train, the rotation drive

gate

18 and 20 of main shaft 60 is rotated in an opposite direction.When gate rotated, above-mentioned two vee shape otch formed the rhombus center outlet opening that a cross-sectional plane changes gradually together.Fig. 5 and Fig. 6 represent respectively to see from the left side and the right, the figure of assembly shown in Figure 4.

Gate

18 and 20 is in off position.Can find out that from the end of Fig. 5 the elongation of hydraulic cylinder piston makes main shaft make clockwise direction and rotates, this rotation causes crank 64 and top gate 18 again, like that, makes clockwise direction and rotates shown in arrow among the figure.But see that in Fig. 6 the rotation of main shaft 60 is anti-clockwise, the result, crank 66 and bottom gate 20 shown in arrow among Fig. 6, are made clockwise direction and are rotated.Like this, two

gates

18 and 20 are synchronously in the opposite direction opened.

And for example shown in Figure 2, dismantle for the ease of utilizing above-mentioned lifting beam 54, a carrying handle 80 is installed on the supporting boss 42 of second suspension arm 34 of top gate 18.This carrying handle 80 comprises a hole 82, and when gauging device 10 was in off position, arranged in a straight line with the hole (not shown) on the above-mentioned flange 36 in this hole 82.A locking lever (not illustrating among Fig. 2) is inserted in these two holes, can correspondingly stop above-mentioned first and

second suspension arms

32 and 34, reach the relative motion between two gates 20 and 18.As can be seen from Figure 3, be placed on the part of this locking lever between supporting boss 42 and the flange 36, can be used as an attachment point of the suspension hook 56 of above-mentioned lifting beam 54.This carrying handle can be arranged on another supporting boss 52 of end of primary shaft 24 equally.A shoulder 84 on the pivot 40 can prevent that boss 42 is close to flange 36 promoting these two first suspension arms 28 and toward each other at 30 o'clock; Therefore can keep the part of above-mentioned locking lever between boss 42 and flange 36, still can be used as the attachment point of the suspension hook 56 of lifting beam 54.

Equally as can be seen, whole driver train is placed on the outside of closure casing 17.In fact, have only first suspension arm, 28,30, the

second suspension arms

32,34 and

gate

18,20, a part that reaches the

axle

24 and 26 that forms

plain flange

38 and 38 is placed in the osed top housing 17, and is exposed in the ubiquitous protective atmosphere of high furnace interior.

Fig. 7 and Fig. 8 represent do not having wear-resisting cone 12, the partial cross section of Fig. 1 vertical with public rotation axis 86.

In Fig. 8, gauging device 10 is in the open position.As can be seen from the figure, the lower edge of passage 16 forms two

cylinderical surfaces

88 and 90; The center of these two cylinderical surfaces is consistent with public rotation axis 25; But radius of curvature difference.The radius ratio of first cylinderical surface 88 is more smaller as the incurvature radius of the cylindrical shape quadrntnt 18 of top gate.The radius ratio of second cylinderical surface 90 is more smaller as the incurvature radius of the cylindrical shape quadrntnt 20 of bottom gate.Like this, as shown in Figure 7, when two

gates

18 and 20 at off position, when partly overlapping each other; The lower edge of passage 16 is very near the inside face of two gates 18 and 20.As a result, material can not be discharged between the lower edge of bottom gate 20 and passage 16.

It shall yet further be noted that

suspension arm

30 and 32 in order to compensate bottom gate 20, and the length difference between the

suspension arm

28 and 34 of top gate 18; Public rotation axis towards top gate 18 directions, departs from the central axis 92 of passage 16 laterally.This can make when gauging device is in the open position, and makes this device compact more.Equally, it shall yet further be noted that the swing circular arc of bottom gate 20, bigger than the swing circular arc of top gate 18.Two

gates

18 and 20 swing circular arc different are that the different length by for

example crank

64 and 66 causes.

Claims

1. the gauging device of a bulk material, it comprises:

First Rotary grate (18) and second Rotary grate (20);

Be arranged on each side of gate (18,20), the axle (24,26) that is used to support these two gates (18,20) and these two gates are rotated around a public rotation axis (25); Primary shaft (24) in the described axle is in a side of two gates (18,20); Second (26) in the described axle are at opposite side; With

One is connected the driver train that two gates (18,20) are rotated in an opposite direction with these two (24,26); It is characterized in that:

Each revolution gate (18,20) is by first suspension arm that stretches out from each side of corresponding gate (28,30) and second suspension arm (32,34) supporting;

Rotate at different directions the described primary shaft of described drive mechanism (24) and described second (26);

Described first suspension arm (28) of described first gate (18) removably is fixed on the described primary shaft (24);

Described first suspension arm (30) of described second gate (20) removably is fixed on described second (26);

Described second suspension arm (32) of described second gate (20) is connected with described first suspension arm (28) of described first gate, and is bearing in the turning joint form on first suspension arm (28) of this first gate; With

Described second suspension arm (34) of described first gate (18) is connected with described first suspension arm (30) of described second gate (20), and is bearing in the turning joint form on first suspension arm (30) of this second gate (20).

2. device as claimed in claim 1 is characterized by,

Described first suspension arm (28) of described first gate (18) comprises first mounting flange (46); Comprise first plain flange (48) with described primary shaft (24); Described first flange (46) removably is fixed on the described plain flange (48);

Described first flange (46) comprises first pivot (50) that stretches out from a side relative with described first plain flange (48); Described second suspension arm (32) of described second gate (20) is connected with described first pivot (50) with the turning joint form.

3. device as claimed in claim 1 is characterized by,

Described first suspension arm (30) of described second gate (20) comprises second mounting flange (36); Comprise second plain flange (38) with described second (26); Described second flange (36) removably is fixed on described second plain flange (38);

Described second flange (36) comprises second pivot (40) that stretches out from a side relative with described second plain flange (38); Described second suspension arm (34) of described first gate (18) is connected with described second pivot (40) with the turning joint form.

4. as claim 2 or 3 described devices, it is characterized by, between described first suspension arm (28) of described second suspension arm (32) of described second gate (20) and described first gate (18), an endplay is arranged on described first pivot (50); And between described first suspension arm (30) of described second suspension arm (34) of described first gate (18) and described second gate (20), an endplay is arranged on described second pivot (40).

5. any one described device as in the above-mentioned claim is characterized by, described gate (18,20) be shaped as the cylindrical shape quadrntnt.

6. as any one described device in the above-mentioned claim, it is characterized by:

This driver train comprises a main shaft (60) and two connecting rods (68,70);

Each axle in these two comprises a crank (64,66);

Described connecting rod (68,70) makes described main shaft (60) be connected with described crank (64,66), in the opposite direction produces two rotations.

7. device as claimed in claim 6 is characterized by, and this driver train comprises a hydraulic actuating cylinder (76), and this main shaft (60) is rotated around its longitudinal axis.

8. device as claimed in claim 5 is characterized in that, it also comprises an escape route (16) that has lower edge, it is characterized by, described gate (18,20) is when off position, and two gates partly overlap each other below the lower edge of this escape route (16); The lower edge of described escape route is the step drum, and it is consistent with two partly overlapping gate shapes.