CN201470648U - Device for realizing cleaning of outer surface of metal pipe - Google Patents

Abstract

The utility model discloses a device for realizing cleaning of the outer surface of a metal pipe, which comprises a pipe body, a bracket, a driving rack, a protective gas source and a vacuum treatment device. A roller on the driving rack can lead the pipe body to do axial uniform motion on the driving rack, and also can lead the pipe body to do back and forth movement, thus realizing the fixing of the vacuum treatment device; and as the pipe body is locally sealed, the pipe body can be cleaned continuously. The device needs not to move a vacuum chamber, which causes unstable and heavy towing load, is suitable for flexible use in a production field, and can not influence production rhythm, thus having good generalization and application prospects.

Description

A kind of device of realizing that the metal tube outer surface cleans

Technical field

The utility model relates to the surface clean technology, and particularly the outer surface of steel tube of iron and steel enterprise's production cleans, and relates in particular to a kind of device of realizing that outer metallic surface is cleaned.

Background technology

The iron scale of metal surface or other pollutant (greasy dirt, impurity, field trash etc.) influence the production and processing of surface quality of products and later process, are the key technologies in the production process.How efficient cleaning (comprising de-scaling), that carry out product to energy-saving and environmental protection have significance to production and product quality.

Metal product surface clean mode commonly used mainly can be divided into three kinds of mechanical means, chemical method and electrochemical methods.The descaling mill of mechanical means such as descaling mill, straightener, planisher, steel brush to the iron scale of belt steel surface stretch, crooked, broken and processing such as roll; The ball blast sand-blasting machine is handled object surface by high-speed steel (iron) ball or sand impinging, to clearing up and strengthen in the surface; High pressure descaling water forms jet by nozzle and sprays to the metal surface to hit scale on surface; Ultrasonic cleaning apparatus utilizes the cavitation effect of ultrasonic wave in liquid is propagated, and destroys pollutant and adsorbate with cavitation bubble impact cleaning part surface and it is distributed to the effect of playing the clean surface in the liquid.Chemical method refers to adopt the iron scale chemically reactive of chemical substances such as acid, alkali and steel material surface and the method for removing iron scale.Hydrochloric acid commonly used, sulfuric acid, nitric acid, hydrofluoric acid and mixed acid also have the aqueous solution that adopts NaOH etc. to reach the effect of de-scaling.Electrochemical method is to form galvanic circle with metal by the electrolytic cleaned agent in solution, according to electrochemical principle, removes surface and oil contaminant, oxide layer and other impurity by electrolytic effect.Wherein, neutral electrolysis is to adopt nontoxic neutral salt as electrolyte, scales as adopting sodium sulphate.

The Ferrous Metallurgy process relates to the cleaning of intermediate products and finished product, and product mainly contains cold hot-strip, steel pipe, circle square billet, slab, wire rod etc.Can select above various cleaning way or make up and improve according to different product objects and surface condition, adopt different cleaning method technical process also to be not quite similar.Improving one's methods of existing cleaning and equipment mainly is included in the various improvement means in original technical process and develops substitute technology and associated equipment two aspects thereof, and typical method is for example to the improvement of acid cleaning process, the exploitation of hydrogen reduction new technology etc.Also there are the problem that can not reach the high-quality surface cleannes in these cleaning processes huge costliness of often required device and method complexity.

Proposed cleaning way and device in order to obtain better surface quality and development environment-friendly type cleaning technique, handled object and comprise micro metal parts, weld seam part, wire rod, tubing and band etc. based on plasma technique.The realization of this technology is to arrange electrode in vacuum chamber, and wherein processed object produces plasma discharge as negative electrode after extracting the acquisition vacuum, and the cathode protection that is produced reaches the evaporation of cathode surface pollutant the effect of cleaning.This technology of the employing of having announced realizes that the patent that the metal surface is cleaned has:

Japan Patent, patent No. JP5214438, patent name " CONTINUOUS SURFACE TREATINGDEVICE LINE FOR METAL " carries out plasma treatment to steel plate again after thick de-scaling of sandblast or slight pickling, to reach more effective processing intent;

Japan Patent, patent No. JP11077141, patent name " LOCAL TREATMENT DEVICE FORMETAL SURFACE BY VACUUM ARC " carry out plasma surface treatment to it with the metal surface of handling is partially sealed.

PCT International Publication No. WO2004044257, patent name " METHOD AND DEVICE FORDESCALING AND/OR CLEANING A METAL CASTING " have proposed to adopt the electrode of multimode formula to realize that the hot-strip plasma treatment improves the method for surface quality.

United States Patent (USP), patent No. US2008190449, patent name " Method and Device forDescaling Metal Strip " have proposed cooling device behind the plasma treatment band steel with the needs of coating after satisfying.

People have taked certain methods realizing the cleaning on surface, metal tube inside and outside, and the existing body surface that relates to is carried out the described method of plasma treatment and had:

Chinese patent, patent publication No. CN1099812, patent name " about the improvement of Treatment of Metal Surface " has proposed the plasma continous treatment process and the device of wire rod, has comprised a kind of processing scheme to the metal cylinder inner surface simultaneously.As shown in Figure 5, the body two ends by 73,74 sealings, are reached vacuum state with extract system 76, electrode 72 moves axially in body 71 to handle inner surface of tube body.

PCT International Publication No. WO0100337, patent name " METHOD FOR THE ELECTRIC-ARCCLEANING OF METALLIC ARTICLES; MAINLY TUBES; DEVICE FOR REALISING THESAME AND VARIANTS " has proposed cleaning method and device to pipeline external surface, as shown in Figure 6, after the preliminary treatment through cavity 8 and mechanical steel brush 1, outer surface of steel tube is realized plasma clean in cavity 2.The characteristics of this scheme are that pipeline remains static, and cavity 2 moves with the realization that links to each other of length travel driver element, progressively handles pipeline outer wall.A kind of scheme that the body integral sealing is handled in fixing vacuum chamber has also been described in the patent.

Russian Federation's patent, the move mode that patent publication No. RU2158784 (C2), patent name " METHOD OFVACUUM MACHINING OF SURFACE OF PIPES AND GEAR FOR ITS REALIZATION " have proposed a kind of inside and outside dolly cleans the steel pipe surfaces externally and internally.As shown in Figure 7, outside dolly mode is cleaned outer surface of steel tube, realizes the vacuum seal of moving.With the common ground of PCT International Publication No. WO0100337 be that vacuum cavity is realized moving, and body remains static.

Summary of the invention

The purpose of this utility model provides a kind of device of realizing that the metal tube outer surface cleans, and use flexibly suitable production scene, reaches the effect that metal body tube outer surface cleans, and to improve the purpose of surface quality, satisfies the production demand.

The technical solution of the utility model is as follows: body of the present utility model is in mobile status, and vacuum treatment installation is fixed, and realizes that body is partially sealed, in this process body is carried out continuous wash.At the uniform velocity moving of body be easy to realize, do not need mobile vacuum cavity and cause discharge instability and heavy towing cable burden.

The purpose of this utility model is achieved in that a kind of device of realizing that the metal tube outer surface cleans, comprises body, at least one drive unit, protective gas source of the gas and vacuum treatment installation:

Described body places on the drive unit, enters vacuum treatment installation under the driving of drive unit;

Described vacuum treatment installation is fixed on the ground.

The fixing of vacuum treatment installation will be the cement flooring as ground in conjunction with concrete form of construction work, can imbed foundation bolt in the cement ground, and linking to each other with foundation bolt by the carriage under the vacuum treatment installation just can fix on the ground.

Preferably, described drive unit comprises:

One bogie is fixed on the ground;

One running roller is installed on the bogie, and body is done axially-movable under the drive of running roller;

One drive motors, the drive roller wheel that is connected with running roller is rotated.

Be connected and use the belt ways of connecting according to the production of actual field between drive motors and the running roller, also can connect without belt.

Preferably, the device that described realization metal tube outer surface cleans also comprises some supports, supports body.

Preferably, described vacuum treatment installation comprises electrode in vacuum chamber, the chamber, sealing gasket, vavuum pump, vacuum meter, air inlet, monitoring window and power supply; Described power supply links to each other with electrode.

Preferably, the device that described realization metal tube outer surface cleans also comprises:

Two seal grooves are arranged at body inlet and exit on the vacuum treatment installation;

Two sealing gaskets are arranged in the seal groove, realize the sealing of vacuum chamber and body.

Preferably, the device that described realization metal tube outer surface cleans also comprises the centering support wheel, and described centering support wheel is installed in the body inlet and the exit of vacuum treatment installation.

In the continuous wash process: after body arrives washing station, enter vacuum treatment installation by drive roller wheel and the centering that is installed in centering support wheel on the vacuum chamber, the pipe front end passes vacuum chamber.Seal by sealing gasket between cavity and the body, start vavuum pump pumping vacuum and feed protective gas.Start plasma power supply unit and realize discharge, body is axially at the uniform velocity mobile in vacuum chamber under the conveying of running roller simultaneously, and body translational speed and cleaning speed are consistent.When body rear end during near the upstream end of vacuum cavity, close discharge power supply and protective gas power supply, discharge vacuum chamber.Body continues to move ahead and breaks away from vacuum chamber until end, and cleaning process finishes.

The utility model makes it compared with prior art owing to adopted above technical scheme, has the following advantages and good effect:

1) can reach high-quality surface clean effect by the utility model, thereby improve pipe quality.

2) by the utility model, realize that body is partially sealed, at the uniform velocity moving of body is easy to realize, is fit to use in the production process, do not influence rhythm of production.

3) the utility model is simple to operate flexibly, can satisfy the production needs.

Description of drawings

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Fig. 1 enters washing station preparatory stage schematic diagram for body of the present utility model.

Fig. 2 is an outer surface of tube body cleaning process schematic diagram of the present utility model.

Fig. 3 is that outer surface of tube body washing and cleaning operation of the present utility model finishes schematic diagram.

Fig. 4 is a vacuum treatment installation structural representation of the present utility model.

Fig. 5 is existing Chinese patent publication number CN1099812 scheme schematic diagram.

Fig. 6 is existing PCT International Publication No. WO0100337 scheme schematic diagram.

Fig. 7 is the existing patent publication No. RU2158784 of the Russian Federation (C2) scheme schematic diagram.

1-body 2-support 3-bogie 4-running roller

5-vacuum chamber 6-centering support wheel 7-vavuum pump 8-protective gas source of the gas

9-power supply 10-electrode 11-sealing gasket 12-seal groove

13-vacuum meter 14-air inlet 15-monitors window

The specific embodiment

As shown in Figure 1, body 1 at first is in and enters the preceding preparatory stage of washing station, is positioned on the support 2.Body can be realized moving axially by the running roller on the bogie 34.Running roller 4 can make body make back and forth movement, when needs repeated washing or part are cleaned repeatedly body is moved back and forth.

As shown in Figure 2, under the driving of bogie 3 upper roll wheels 4, body 1 enters vacuum treatment installation through the centering of vacuum chamber 5 outside centering support wheels 6, guarantees that in the transport process of steel pipe the body front end passes vacuum 5, makes body be positioned at vacuum treatment installation and constitutes a sealing system.Centering support wheel 6 provides the radial location of body 1, makes body accurately enter vacuum chamber 5 by sealing gasket 11, and simultaneously, the centering support wheel 6 of vacuum chamber 5 both sides has guaranteed that the spacing between outer surface of tube body and the electrode is constant.Carrying out vacuum this moment prepares; start vavuum pump 7 pumping to low vacuum; the protective gas source of the gas 8 that links to each other with vacuum chamber 5 can charge into protective gas in the chamber, protective gas is selected inert gas usually, also can select methane, ammonia, hydrogen or other gas and composition thereof.Start plasma discharge power supply 9, realize vacuum arc discharge.Can generate a large amount of cathode protections on body 1 surface, cathode protection makes the iron scale on body surface and pollutant evaporation that other sticks and reaches the purpose of cleaning in the fast moving process.Body 1 is at the uniform velocity moving axially in vacuum chamber 5 under the driving of running roller 4 simultaneously, and keeps body 1 translational speed consistent with cleaning speed, progressively realizes cleaning in body 1 moving process.When body arrived opposite side bogie 3, the running roller of two bogies drove the pipeline motion jointly, and body 1 breaks away from after the preceding bogie of washing station, and its driving is finished separately by the bogie of opposite side.

The body rear end is during near the upstream end of cleaning unit, and steel pipe stops to move, and closes discharge power supply 9 and protective gas source of the gas 8 paths, discharges vacuum chamber; Body continues to move ahead, and until breaking away from vacuum chamber 5, cleaning process finishes, as shown in Figure 3.

Fig. 4 is the vacuum treatment installation structure, and sealing gasket between body 1 and the vacuum chamber 5 11 constitutes seals, and sealing gasket 11 is positioned at seal groove 12, and the pumping by vavuum pump 7 reaches vacuum atmosphere, and vacuum can be measured by vacuum meter 13.Simultaneously, the monitoring window 15 that the air inlet 14 that joins with source of the gas is arranged on the cavity and be used to observe or detect usefulness.Simultaneously, hydrodynamic reciprocating sealing is that the elastic packing that the adjustable in pressure hermetic seal effect by sealing gasket 11 forms is realized.

In sum, the utility model, use flexibly suitable production scene, simple to operate, reaches the high-quality cleaning performance of metal body tube outer surface, to improve tube quality, satisfies the production demand, thereby possess good prospect for promotion and application.

Be noted that above enumerate only for several specific embodiments of the present utility model, obviously the utility model is not limited to above embodiment, and many similar variations are arranged thereupon.If those skilled in the art all should belong to protection domain of the present utility model from all distortion that the disclosed content of the utility model directly derives or associates.

Claims (6)

1. a device of realizing that the metal tube outer surface cleans comprises body, at least one drive unit, protective gas source of the gas and vacuum treatment installation; It is characterized in that:

Described body places on the drive unit, enters vacuum treatment installation under the driving of drive unit;

Described vacuum treatment installation is fixed on the ground.

2. the device that realization metal tube outer surface as claimed in claim 1 cleans, it is characterized in that: described drive unit comprises:

One bogie is fixed on the ground;

One running roller is installed on the bogie, and body is done axially-movable under the drive of running roller;

One drive motors, the drive roller wheel that is connected with running roller is rotated.

3. the device that realization metal tube outer surface as claimed in claim 1 or 2 cleans is characterized in that also comprising some supports, supports body.

4. the device that realization metal tube outer surface as claimed in claim 3 cleans, it is characterized in that: described vacuum treatment installation comprises electrode in vacuum chamber, the chamber, sealing gasket, vavuum pump, vacuum meter, air inlet, monitoring window and power supply; Described power supply links to each other with electrode.

5. the device that realization metal tube outer surface as claimed in claim 4 cleans is characterized in that also comprising:

Two seal grooves are arranged at body inlet and exit on the vacuum treatment installation;

Two sealing gaskets are arranged in the seal groove, realize the sealing of vacuum chamber and body.

6. as the device of claim 1 or 4 described realization metal tube outer surfaces cleanings, it is characterized in that also comprising the centering support wheel, described centering support wheel is installed in the body inlet and the exit of vacuum treatment installation.

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