CN2830739Y - Molten aluminium siphon - Google Patents

Abstract

The utility model relates to a molten aluminium siphon pipe which comprises a liquid inlet pipe, a liquid outlet pipe and a vacuum generator. The utility model is characterized in that a layer of material with high-temperature resistance; high strength and favorable compactness is arranged in the siphon pipe; the thickness of the material is four cm; the vacuum generator is moved to the end of the liquid outlet pipe for installation; the height difference of the liquid inlet pipe and the liquid outlet pipe is increased. The utility model favorably solves the problem of high-temperature working environments and improves the excess of working pressure intensity. Even under the condition of small pressure intensity, molten aluminium can not surge to plug the upper part of the siphon pipe and the cleaning work is convenient. The average service life of the utility model is more than three mouths, the stability of the system is well improved and convenience is brought to the operation.

Description

A kind of aluminium liquid syphon tube

Technical field

The utility model relates to a kind of siphon unit of Liquid extracting, especially is applied in the syphon tube in the aluminium liquid extraction road in the liquid environment of high-temperature metal.

Background technique

At present, known syphon tube structure is formed (as shown in Figure 1) by a kind of follow-on U type pipe connecting vessels and vacuum generator, the top vacuum pump is opened, take part air in the syphon tube top out of, make wherein pressure reduction, under the barometric pressure effect, the syphon tube outside liquid is pressed in the pipe, the height difference of utilizing inverted u-shaped pipe both sides to form simultaneously forms feed liquor and fluid, reaches liquid and is drawn in another container from a container.But, metal syphon tube is easy scaling loss in hot environment, in addition, when extraction liquid is another metal liquid, because liquid coefficient of viscosity when mobile is bigger in the pipe, pipeline stops up easily, and height difference is not obvious, and the pressure allowance is less, and syphon tube top pressure must be strict controlled in the narrow operating pressure scope when operation, if too little pressure then liquid do not reach the purpose of extraction to the top blocking pipe that flows if pressure values is excessive.More than the problem of Chu Xianing has been brought great difficulty to operation.

Summary of the invention

The purpose of this utility model is to overcome existing syphon tube inconvenient operation and can not resistant to elevated temperatures deficiency, provides a kind of and can greatly improve the summary degree of operation, the aluminium liquid syphon tube of accumulated slag in the purge tube easily simultaneously.

The technical solution of the utility model is: have in syphon tube inside that one deck is high temperature resistant, high strength, material that compactness is good, its thickness is about 4 centimetres, and vacuum generator is moved to the fluid pipe end install, improve the height difference of liquid inlet pipe and drain pipe significantly.

At liquid inlet pipe and drain pipe pipeline top end the top cover that can be easy to open is arranged all.The drain pipe radius is 4 times of liquid inlet pipe.

The utility model has solved the problem of high-temperature work environment preferably, and when aluminium liquid flows in the nonmetal tube wall of this layer, coefficient of viscosity reduces significantly, accumulated slag and aluminium liquid are difficult for adhering on it, pipeline separately top end the top cover that can be easy to open is all arranged, to bringing great convenience property of cleaning work.Owing to improve the height difference of both sides pipeline significantly, make the height of drain pipe be far longer than the height of liquid inlet pipe, the allowance of operating pressure has obtained good improvement, even aluminium liquid can not occur gushing stifled phenomenon to syphon tube top yet under the less situation of pressure.Vacuum generator is moved to the fluid pipe end install, owing to connect with heat-resistant rubber hose in the middle of having cancelled, the benefit of doing like this is that vacuum generator is difficult for being stopped up by aluminium liquid, to such an extent as to and can not make because of the effect of hot air and connect the sebific duct distortion and damage and can't work.Diameter at the outlet end pipeline is also bigger, has avoided in the aluminium water block to the obstruction of drain pipe like this.The working life of package unit, the stability of system obtained good improvement, brings great convenience to operation on average more than 3 months.

The aluminium liquid that present embodiment is applied in foundry of Yunnan Aluminium Co., Ltd. advances furnaceman and does in the process, in the production reality of 200,000 tons of annual outputs, since trying out 3 months continuously, good economic benefit and use value have been embodied, it has reduced the labor intensity in the operation environment, has saved working time, and other supporting operation is therefrom freed, improve working efficiency, greatly reduced cost of production.

Description of drawings

Fig. 1 is the aluminium liquid siphon arrangement schematic representation of prior art;

Fig. 2 is an aluminium liquid siphon arrangement schematic representation of the present utility model.

Among Fig. 1,1-1-air outlet hole, 1-2-drain pipe, 1-3-liquid inlet pipe, 1-4-high temperature air, the high temperature resistant sebific duct of 1-5-;

Among Fig. 2,1-air outlet hole, 2, the 3-top cover, 4-liquid inlet pipe, 5-drain pipe, 6-vacuum generator, 7-high temperature air, the high temperature resistant pouring layer of 8-.

Embodiment

Aluminium liquid siphon arrangement of the present utility model as shown in Figure 2, form by liquid inlet pipe 4 and drain pipe 5 connections, vacuum generator 6 places air outlet hole 1 place, the pipeline top end has top cover 2 and 3, the syphon tube inwall is high temperature resistant with one deck, high strength, material that compactness is good are poured into a mould, and its thickness is (the high temperature resistant pouring layer 8 among Fig. 2) about 4 centimetres.The part air is flowed out by air outlet hole 1 in the pipe when opening vacuum generator, pressure in the pipe reduces, under the barometric pressure effect, aluminium liquid is upwards increased with identical speed by 4,5 liang of pipelines, when lifting height is h, this moment h=H, intraductal pressure continues to reduce, this moment, aluminium liquid was flowed by direction shown in the arrow among the figure.The H height will upwards increase small variation, because h is highly fixing, according to law of connected vessels, the aluminium liquid that has more under action of gravity will be flowed out to keep the balance of H=h by drain pipe 5, at this moment pressure P and the atmospheric pressure P in the pipe ₀Between the pass be P=P ₀-ρ gh, wherein ρ is an aluminium liquid density, g is a gravity accleration.Suppose to exist such pressure values can make the height of drain pipe 5 reach H+ Δ h, this pressure is the work CLV ceiling limit value so.The allowance that can calculate pressure thus is Δ P=ρ g Δ h, and Δ h is bigger in the utility model, thus improved the operating range of operating pressure, thus improve the simplification of operation.In existing aluminium liquid syphon tube, as shown in Figure 1, when opening vacuum pump, pressure reduces in the pipe, and aluminium liquid enters syphon tube simultaneously by liquid inlet pipe 1-3 and drain pipe 1-2, and is same because the existence of height difference Δ h, aluminium liquid flow direction is shown in arrow among the figure, and as can be seen from the figure,, and can't increase Δ h largely because this design Δ h is less.Shown in the allowance of operating pressure be Δ P=ρ g Δ h.When work pressure must accurately be controlled in this scope, the obstruction syphon tube otherwise aluminium liquid will rise, and package unit is ferrous material is not so possess high temperature resistant and decay resistance.And as seen from Figure 1, pipeline has adopted thickness with footpath design, stops up drain pipe when having block impurity in the aluminium water easily, and in this case, aluminium water can gush and stifledly directly stop up vacuum generator to syphon tube top in the liquid inlet pipe, makes it can't proper functioning.And the radius of drain pipe of the present utility model is 4 times of liquid inlet pipe, has guaranteed that drain pipe can not stop up generally speaking, has reduced aluminium water and has upwards gushed stifled possibility, and vacuum generator is directly installed at the fluid pipe end, has improved the reliability of device greatly.From figure, it can also be seen that because the high temperature resistant sebific duct between cancellation vacuum generator and the syphon tube connects, avoided because sebific duct damage and distortion make the situation of device cisco unity malfunction.

Claims (3)

1. aluminium liquid syphon tube, comprise liquid inlet pipe, drain pipe and vacuum transmitter, it is characterized in that having in syphon tube inside that one deck is high temperature resistant, high strength, material that compactness is good, its thickness is 4 centimetres, vacuum generator is moved to the fluid pipe end install, and improve the height difference of liquid inlet pipe and drain pipe.

2. aluminium liquid syphon tube according to claim 1 is characterized in that liquid inlet pipe and drain pipe pipeline top end all have the top cover that can be easy to open.

3, aluminium liquid syphon tube according to claim 1 is characterized in that the drain pipe radius is 4 times of liquid inlet pipe.

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