CN2167770Y

CN2167770Y - Seawater pressure filter

Info

Publication number: CN2167770Y
Application number: CN 92225238
Authority: CN
Inventors: 薛英超; 张朝玉; 孟庆港; 董庆根
Original assignee: BUIDING DESIGN INST GENERAL LOGISTICS DEPARTMENT CPLA
Current assignee: BUIDING DESIGN INST GENERAL LOGISTICS DEPARTMENT CPLA
Priority date: 1992-06-23
Filing date: 1992-06-23
Publication date: 1994-06-08
Anticipated expiration: 2002-06-23

Abstract

The utility model relates to a pressure type seawater filter which is composed of a shell body 1, a water distributing board 2, a manhole 3, a filtering layer 4 and a supporting layer 6. The utility model is characterized in that the inner wall of the traditional steel pressure type filter is additionally welded with a right amount of sacrificial anode protecting blocks 5; then, aluminum is sprayed on the inner wall of the filter, and plastic is sprayed on the outer wall. According to the principle of electrochemical corrosion, the whole body of the steel filter becomes a protected cathode and is not corroded by seawater in the process of use. Moreover, the steel seawater filter can never be corroded by periodically and additionally welding the sacrificial anode protection blocks. The utility model can be applied to various seawater filtering projects relating to the utilization of seawater in coastal area.

Description

Seawater pressure filter

The utility model relates to a kind of pressure type sea water filter device.

Seawater is inexhaustible natural resources, and in vast coastal area, the direct utilization of seawater comes into one's own.It has been used as land sea-farming and artificial breeding; The cooling water of coastal industry; Alternative running water is made the sanitary flush water; Offer land seawater natatorium, water paradise and seawater hydrotherapy and physiotherapy project.Because of containing natural impuritys such as silt and marine alga in the coastal seawater, need carry out filtration treatment before use.The filter that uses is gravity type xoncrete structure filtering ponds at present, and floor space is big, cost is high, complex management; Traditional steel pressure formula filter, though take to brush the way of antirust paint or antirusting paint in the inwall of housing and appearance anticorrosion, but because of seawater has special nature, above-mentioned anticorrosion way can not effectively solve the etching problem of seawater to the steel filter, and generally using two to three years is heavy corrosion even perforation.

The purpose of this utility model is: for the seawater utilization engineering provide a kind of can effective etch-proof pressure type sea water filter device.

The purpose of this utility model is achieved in that pressure type sea water filter device is by housing; water distributing plate; hand-hole; formations such as filter course; inwall at traditional steel pressure filter housings adds an amount of anode loss protection piece of weldering; principle according to electrochemical corrosion; in using process of the present utility model; the integrated steel pressure filter becomes the negative electrode of protection and is not subjected to the corrosion of seawater; carry out aluminium-plated to the inwall of integrated steel pressure filter simultaneously and the preservative treatment of carrying out plastic-blasting at outer surface with further reinforcement anti-seawater of the present utility model; marine atmosphere; corrosive power; form an anode integral body by aluminium-plated whole inwall sprayed-on Al layer and the aluminium anodes protection piece of making in inside, be not subjected to the corrosion of seawater thereby assurance integrated steel container becomes protected negative electrode.The anode loss protection piece is made by aluminium zinc indium cadmium alloy, and its quantity is determined according to the inner wall area of housing.

The utility model compared with prior art has tangible advantage: the filtration facility of existing seawater utilization engineering, because of failing to solve the etching problem of seawater to the steel filter, the gravity type xoncrete structure filtering ponds that adopt, floor space is big, cost is high, complex management more.The utility model adds weldering anode loss protection piece at steel pressure filter housings inwall; in use; the integrated steel filter-press becomes protected negative electrode and is not subjected to the corrosion of seawater; add the same anode loss protection piece of weldering when the anode loss protection piece will be corroded in the original place again, make the integrated steel filter-press still become protected negative electrode and be not subjected to seawater corrosion.The utility model is at the inwall of steel pressure formula filter and appearance is carried out aluminium-plated and plastic-blasting is handled, the ability that corrodes with its anti-seawater corrosion of further reinforcement and anti-marine atmosphere.The utility model can select required color to reach the bright and clean purpose attractive in appearance of appearance by plastic-blasting.

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is a pressure type sea water filter device structural representation.

Consult Fig. 1; as seen from the figure; pressure type sea water filter device is made up of housing 1, water distributing plate 2, hand-hole 3, filter course 4, supporting layer 6; feature of the present utility model is at housing 1 inwall middle and lower part shown position; uniform four the anode loss protection pieces 5 of weldering that add; this protection piece is made by aluminium zinc indium cadmium alloy, and profile is the rectangle Al alloy block.According to the principle of electrochemical corrosion, in the utility model use, seawater enters in the steel pressure formula filter, and the integrated steel filter-press becomes protected negative electrode and is not subjected to the corrosion of seawater.Highly be 2621MM; external diameter 1600MM; after housing 1 inwall of wall thickness 8MM adds weldering anode loss protection piece 5, carry out aluminium-plated to the inwall of integrated steel filter-press again and carry out the preservative treatment of plastic-blasting, the ability that corrodes with its anti-seawater corrosion of further reinforcement and anti-marine atmosphere at outer surface.Outer wall can select required color to reach the bright and clean purpose attractive in appearance of appearance by plastic-blasting.Embodiment described in the utility model, be applicable to and require through filtering, delivery turbidity generally in 5 mg/litre with interior seawater or fresh water, the filter influent turbidity generally should be in the 15-20 mg/litre,, then should reduce filtering velocity or make double-deck filter when higher as influent turbidity, when needs bilayer filter, the thickness of filtrate supporting layer 6 is constant, filter course 4 thickenings, and housing 1 is also corresponding to be increased.The utility model can be made into series of products, selects for use according to the actual needs of engineering construction.To fairly large seawater utilization engineering, select the corresponding increasing of specification of pressure type sea water filter device for use, housing 1 inwall adds the corresponding increase of quantity of the anode loss protection piece of weldering.

Claims

1, a kind of pressure type sea water filter device; constitute by housing (1), water distributing plate (2), hand-hole (3), filter course (4) and supporting layer (6); of the present utility model being characterised in that: the inwall at traditional steel pressure formula filter housings (1) adds weldering anode loss protection piece (5); and then it is aluminium-plated that the steel filter is carried out inwall; make whole inwall become protected negative electrode, steel filter outer wall surface is carried out plastic-blasting and is handled.