CN2139128Y

CN2139128Y - Single-shaft machine for pickling band steel

Info

Publication number: CN2139128Y
Application number: CN 92223071
Authority: CN
Inventors: 李建岳; 李立明
Original assignee: TIANJIN BICYCLE STEELS REMAKING FACTORY
Current assignee: TIANJIN BICYCLE STEELS REMAKING FACTORY
Priority date: 1992-06-01
Filing date: 1992-06-01
Publication date: 1993-07-28
Anticipated expiration: 2002-06-01

Abstract

The utility model relates to a single-shaft machine for pickling band steels, which is suitable for the pickling of circular band steels. The structure character thereof is that the middle of a pickling tank is provided with a loose winding mechanism and a tight winding mechanism comprising a driving device assembly, a central shaft assembly, an outer tank assembly, an inner tank assembly, an inner locking head assembly, and an outer locking head assembly. The upper part of the center shaft is fixed with a rotation disc and an overrunning clutch to drive the outer tank and the inner tank for rotating. During the positive rotation, the outer tank and the inner tank are rotated together and the coil of a strip is undone. During the reverse rotation, the inner tank does not rotate and the coil of the strip is twisted. The oxide scale generates crack and falls off during the loose winding and twisted process. The clearance variation increases the activity of acid liquor. The utility model has short pickling time, high efficiency, and good quality.

Description

Single-shaft machine for pickling band steel

The utility model belongs to the cleaning equipment in the metal rolled process of what

The band steel is industrial steel commonly used, anneal in the middle of adopting hot-rolling method processing belt steel or rolled band steel, all need the band steel is heated, heating can make the belt steel surface oxidation, generate oxide skin, must remove descaling before finish rolling, the method for removing descaling is to react with acid and oxide skin, and this working method is pickling.General acid washing method is the band steel to be immersed fill in the pickling tank of acid solution, takes out after the immersion regular hour, and this method time is long, and efficient is low, the quality instability, and operation is heavy.Also can adopt the method for continuous pickling, continuous pickling is that pickling tank and milling train are connected into production line, makes the band steel by after more than the 20 meter long pickling tank, directly successive enters milling train, this method efficient height, but floor space is big, the pickling time is subjected to the influence of roll speed, and the quality instability easily produces acid and does not wash clean, overpickling and hydrogen embrittlement situation, pickling temperature is more than 60 ℃, acid solution need heat, and wastes energy the cost height.

The purpose of this utility model is that a kind of improved single shaft strip pickling machine (hereinafter to be referred as pickling machine) will be provided, and it can reduce the time of pickled steel strip, reduces floor space, makes pickling quality stable, overcomes that acid does not wash clean or the shortcoming of overpickling, reduces production costs.

Pickling machine particularly suitable what is rolled into the pickling of discous plate-like band steel, its structure as shown in Figure 1, what Fig. 1 represented is the cross-section structure of vertical direction.In Fig. 1

(1) motor (2) worm type of reduction gearing (3) shaft coupling

(4) pickling tank (5) central shaft (6) central shaft bearing

(7) overrunning clutch pedestal bearing (8) overrunning clutch

(9) the outer bucket of inside and outside bucket bearing (10) rotating disk (11)

(12) bucket (13) roller (14) inner lock head support in

(15) the outer tapered end eccentric wheel of inner lock head drift (16) external lock first gear plate (17)

The pickling tank of pickling machine is the square groove that steel plate is welded into, and in the middle of the pickling tank plate-like band steel loose winding is arranged, and tightly rolls up mechanism.Plate-like band steel loose winding, tightly roll up mechanism by transmission mechanism component, central axis component, inside and outside tub assembly, inside and outside lock head component are formed.

Transmission mechanism component is that motor (1) passes through belt pulley, and worm type of reduction gearing (2) and shaft coupling (3) make the transmission rig of central shaft (5) energy forward (clockwise direction) and oppositely (counterclockwise) rotation be made up of motor, belt pulley, worm type of reduction gearing, shaft coupling.

The central shaft of central axis component is a main driving axle, it is bearing on the center axle housing at pickling tank middle part by central shaft bearing (6), the center axle housing raises up and pickling tank welds, the central shaft lower end is fixed with shaft coupling (3), the upper end is with key fixedly rotating disk (10) and overrunning clutch (8), rotating disk is the disk that has groove, and the projection of groove and outer bucket (11) is coincide, and central shaft drives outer bucket rotation by rotating disk during work.Overrunning clutch is the clutch coupling of unidirectional transmission, and when central shaft just changeed, the interior cover of overrunning clutch drove overcoat by roller and rotates.When central shaft reversed, the roller of overrunning clutch was thrown off overcoat and is not rotated.Inside and outside tub assembly is placed in the upper surface of overcoat, bucket rotation in overcoat drives.There is overrunning clutch pedestal bearing (7) lower surface of overcoat, and it is that a circle spherical ball is seated in the round ball arc road of axle housing upper surface, center, supports the weight of inside and outside bucket and band steel with ball.

Inside and outside tub assembly is a pickling machine groundwork part, interior bucket and outer bucket all are drum shapes, outer casing is on interior bucket, in the middle of outer bucket and the interior bucket inside and outside bucket bearing (9) and roller (13) are arranged, inside and outside bucket can rotate respectively, and outer bucket top is welded with hanger, and hanger can be sling inside and outside tub assembly, the bottom bin cruciferous of interior bucket, plate-like band steel lies on the bin during pickling.

The effect of the inner lock head device of inside and outside lock head component is that the interior stub bar with plate-like band steel is fixed on the wall of outer bucket, rotates in company with outer bucket.Inner lock head mechanism is by the inner lock head support of shaped as frame, form with the inner lock head drift, the structure of inner lock head mechanism is the inner lock head support (14) that the higher position of drum outer wall outside welds a shaped as frame, the inwall of inner lock head support is the inclined-plane, this inclined-plane is identical with the inclined-plane gradient of inner lock head drift (15), puts on the outer wall that drift then can be pressed on the interior stub bar of plate-like band steel outer bucket fixing.

The effect of outer lock head device is that the outer stub bar with plate-like band steel is fixed on the pickling tank, welding external lock first speed plate (16) on the pickling tank, rotating axle and outer tapered end eccentric wheel (17) are equipped with in baffle plate top, when outer tapered end eccentric wheel (17) rotates outer stub bar are clamped between baffle plate and the eccentric wheel.

Also have pickle solution heating tube and discharging of waste liquid pipe in the pickling tank.

During pickling machine work, crane hangs inside and outside tub assembly on the ground.

The plate-like band steel that needs pickling is lain on the bin of interior bucket, with the inner lock head device with the interior stub bar of plate-like band steel outside the outer wall of bucket fix, outer the putting that inside and outside bucket and plate-like band steel are sling centre spindle unit overrunning clutch then, plate-like band steel immerses in the pickle solution, with outer stub bar locking latches outer stub bar is fixed.

When starting motor central shaft just being changeed, central shaft just changes outer bucket by rotating disk, central shaft also drives the overrunning clutch overcoat by cover roller in the overrunning clutch just to be changeed, put outward the interior bucket of placement and bin that interior bucket is gone up welding and on plate-like band steel also companion just change, because of outer stub bar has been fixed, so plate-like band steel ecto-entad unclamps gradually, this is the loose winding process.Figure two is a loose winding process synoptic diagram.

Drive outer bucket counter-rotating when motor makes central shaft when counter-rotating rotating disk, the overrunning clutch overcoat does not change interior bucket, bin and the band steel placed it on and does not rotate yet, and an outer bucket drive plate-like band steel is progressively tightly rolled up from inside to outside, and this is tightly to lick journey.Figure three is for tightly licking the journey synoptic diagram.

It is constantly crooked and stretch in the process of loose winding and tight volume to be immersed in band steel in the acid solution, the very crisp oxide skin of character will crack or come off, gap between the steel band constantly changes and stirs, acid solution enters has easily increased activity, speeding up of scale removal, improved efficient, shortened the time of pickling, general degree of tightness can be finished pickling twice.The pickling time can work out according to the degree of oxide skin, and pickling quality is guaranteed, be difficult for to produce that acid does not wash clean or quality problems such as overpickling hydrogen embrittlement.It is little that pickling machine takes up an area of, and fault is few, for ease of maintenaince, easy to operate, improved workman's operational condition, reduced cost.These all are the advantages of pickling machine.

The outer bucket of (1) plate-like band steel (2) (3) inner lock head mechanism (4) external lock head mechanism in accompanying drawing 2 and the accompanying drawing 3.

Structure shown in the accompanying drawing 1 is embodiment, the suitable especially pickled steel strip width of embodiment is below 250 millimeters, section thickness 2-5 millimeter, every dish external diameter is below 1500 millimeters, the plate-like band steel of internal diameter more than 550 millimeters, process above-mentioned plate-like band steel with pickling machine, through preliminary experiment, efficient can improve 15% cost can descend 11%.

Claims

1, a kind of pickling tank that comprises is specially adapted to the single shaft strip pickling machine of plate-like strip pickling, it is characterized in that, in the middle of the pickling tank by plate-like band steel loose winding, tightly roll up mechanism, plate-like band steel loose winding, tightly roll up mechanism and form by transmission mechanism component, central axis component, inside and outside tub assembly, inside and outside lock head component.

2, it is characterized in that by the said single shaft strip pickling of claim 1 machine transmission mechanism component is made up of motor, belt pulley, worm type of reduction gearing, shaft coupling.

3, it is characterized in that by the said single shaft strip pickling of claim 1 machine the central shaft of central axis component is bearing on the axle housing of center by the central shaft bearing, the lower end be fixed with shaft coupling, upper end with key fixedly rotating disk and overrunning clutch, the groove of rotating disk and the projection of outer bucket coincide, inside and outside tub assembly is placed in overrunning clutch overcoat upper surface.

4, by the said single shaft strip pickling of claim 1 machine it is characterized in that the interior bucket of inside and outside tub assembly and outer bucket all be drum shape, outer casing on interior bucket, there are bearing and roller in the centre, the top of outer bucket is welded with hanger, interior bucket bottom bin cruciferous.

5, it is characterized in that by the said single shaft strip pickling of claim 1 machine, the inner lock head assembly is by the inner lock head support of shaped as frame, form with the inner lock head drift, the inclined-plane of inner lock head rack inner wall is identical with the gradient on inner lock head drift inclined-plane, and rotating axle and outer tapered end eccentric wheel are housed on the external lock first gear plate of outer lock head device.

6, it is characterized in that by claim 1,2,3,4,5, said single shaft strip pickling machine: pickling tank has pickle solution steam heating pipe and discharging of waste liquid pipe.