CN2139129Y - Double-shaft machine for pickling band steel - Google Patents

Abstract

The utility model relates to a double-shaft machine for a pickling band steel, which is suitable for the pickling of circular band steel. The utility model has the structure that a pickling tank is provided with two band steel winding mechanisms which are respectively composed of a driving mechanism assembly, a center shaft assembly, and an outer barrel assembly. A motor of the driving mechanism assembly drives a center shaft to rotate via belt wheels, a speed reducer, and a clutch. A rotation disc is fixed on the upper part of the center shaft, and the outer barrel assembly is positioned on the rotation disc; an outer barrel is in the shape of an inverted drum, and the lower part is welded with a material rest for horizontally positioning the band steel and a lock device. When the center shaft drives the outer barrel to rotate, the band steel conducts repeated winding in the two winding mechanisms; the band steel is treated by pickling during the winding.

Description

Double-shaft machine for pickling band steel

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

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, 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 behind more than 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 twin 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 weakness of overpickling, reduces production costs.

Pickling machine is specially adapted to be rolled into the pickling of discous plate-like band steel, the external diameter of every dish plate-like band steel is below 1500 millimeters, internal diameter is more than 400 millimeters, strip width is below 250 millimeters, section thickness is below 2 millimeters, the structure of pickling machine 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) clutch coupling

(4) the outer bucket of bearing (5) central shaft (6)

(7) rotating disk (8) bin (9) hanger

(10) tapered end support (11) tapered end drift (12) pickling tank

The pickling tank of pickling machine is the rectangular tank that steel plate is welded into, and two plate-like band steel spooling mechanisms are arranged in the pickling tank, is plate-like band steel spooling mechanism's first and second, and the structure of first and second is identical.Plate-like band steel spooling mechanism is by the gearing assembly, central axis component, and outer tub assembly is formed.

The gearing assembly is that motor (1) passes through belt pulley, and worm type of reduction gearing (2) and clutch coupling (3) make the gearing of central shaft (5) energy forward (clockwise direction) and reverse (counterclockwise) rotation.Form by motor, belt pulley, worm type of reduction gearing, clutch coupling.The central shaft of central axis component is a main driving axle, it is bearing on the center axle housing of pickling tank by centre bearing (4), the center axle housing raises up and pickling tank welds, the central shaft lower end is fixed with clutch coupling (3), the upper end is with the fixing rotating disk (7) of key, rotating disk is the garden dish that has groove, and the projection of groove and outer bucket (6) is coincide, and central shaft drives outer bucket rotation by rotating disk during work.

Outer tub assembly is the groundwork part of pickling machine, and outer bucket (6) is that inverted garden is barrel-shaped, and outer bucket hangs on the rotating disk of central shaft, and the projection that cooperates with the rotating disk upper groove is arranged, and central shaft drives outer bucket rotation by rotating disk.Outer barrel bottom is welded with criss-cross bin (8), needs the band steel of pickling to lie on the bin, and the top of outer bucket is welded with and is used to outer barrel the hanger (9) of slinging, and the outer wall of outer bucket is welded with the lock head device of fixing strip steel.The effect of lock head device is that the stub bar with plate-like band steel is fixed on the wall of outer bucket, rotates in company with outer bucket.Structure is the tapered end support (10) that the higher position of drum outer wall outside welds a shaped as frame, and the tapered end rack inner wall is the inclined-plane, and this inclined-plane is identical with the inclined-plane gradient of tapered end drift (11), puts on the outer wall that drift then can be pressed on the interior stub bar of plate-like band steel outer bucket fixing.Tapered end support tapered end drift is formed lock head device

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

During pickling machine work, crane hangs the outer tub assembly of band steel spooling mechanism first on the ground, the plate-like band steel that needs pickling is lain on the bin of the outer bucket of first, will be fixing on the outer wall of bucket outside with lock head device with the interior stub bar of steel, then outer bucket is hung on the central shaft rotating disk of spooling mechanism first, the band steel immerses in the pickle solution, pulls out the outer stub bar of band steel, and the lock head device of outer stub bar with second spooling machine mechanism is fixed on the outer barrel wall of second spooling mechanism.Start the motor of spooling mechanism second, the band steel progressively is wound into outside the second spooling mechanism barrel by bucket first spooling mechanism outside.The motor that stops second spooling mechanism after winding finishes starts the motor of the spooling mechanism of first, and the band steel returns again on the outer bucket that twines first spooling mechanism, carries out so repeatedly.

Be immersed in band steel in the acid solution in the process of spooling bending and stretch, 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 spooling 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.Pickling machine takes up an area of little, and fault is few, and is for ease of maintenaince easy to operate, improved workman's operational condition, reduced cost.These all are the advantages of pickling machine.

Structure shown in the drawings is embodiment, can raise the efficiency 15% with embodiment pickling machine processing pickled steel strip through preliminary experiment, and cost descends 11%.

Claims (5)

1, a kind of pickling tank that comprises is specially adapted to the twin shaft strip pickling machine of plate-like strip pickling, it is characterized in that, two plate-like band steel spooling mechanisms are arranged in the middle of the pickling tank, and plate-like band steel spooling mechanism is by the gearing assembly, central axis component, and outer tub assembly is formed.

2, it is characterized in that by the said twin shaft strip pickling of claim 1 machine the gearing assembly is made up of motor, belt pulley, worm gear, worm reducer, clutch 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 bearing of central shaft housing, the lower end is fixed with clutch coupling, and the upper end is rotating disk fixedly, and the projection of the groove of rotating disk and outer bucket is coincide.

It is characterized in that by the said single shaft strip pickling of claim 1 machine that 4, the outer bucket of outer tub assembly is the garden tubular, outer bucket top is welded with hanger, and the bottom is welded with criss-cross bin, is welded with lock head device on the outer wall.

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

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