CN1429648A

CN1429648A - Microfilter

Info

Publication number: CN1429648A
Application number: CN 02158869
Authority: CN
Inventors: 刘鹰; 杨红生; 张涛; 刘保忠; 周毅; 刘石林; 张福绥
Original assignee: Institute of Oceanology of CAS
Current assignee: Institute of Oceanology of CAS
Priority date: 2002-12-28
Filing date: 2002-12-28
Publication date: 2003-07-16

Abstract

A microfilter for removing the particles suspended in water used for marine culture is composed of a filter drum covered by a screen net and with a rotary shaft, a motor connected to the said rotary shaft for making the filter drum rotate, a back-flushing unit above the said filter drum for removing the particles from the said screen net, and the back-flushing channel for collecting the backflushing water and draining it.

Description

Microfilter

Affiliated technical field

The present invention relates to the water treatment field of mariculture, be specially a kind of Microfilter of removing suspended particulate substance in the water that filters.

Background technology

Filtration is to remove one of effective ways of suspension in the water, is that aquaculture system is used for the main means that solid-liquid separates.In fish, shrimp industrialized aquiculture are produced, usually adopt make a return journey particle suspensions in dewatering of Microfilter, the Microfilter that often uses in producing is at present generally made by materials such as cast iron, stainless steels, use aborning, especially in marine fish, shrimp aquaculture are produced, use, not seawater corrosion resistance, be easy to generate corrosion, not only influence the normal use of machine, and the material chip of corrosion falls into easily to handle water and enter and culture in the pond, influence the normal growth growth of aquaculture organism; In addition, because the filter screen corrosion, particle suspensions is easy to stop up the mesh of Microfilter, influences filter efficiency.

Summary of the invention

In order to overcome not higher, the mesh of seawater corrosion resistance, energy consumption deficiency such as obstruction easily of existing Microfilter, the invention provides a kind of Microfilter, this Microfilter can use in seawater for a long time, and has advantage of low energy consumption.

The present invention solves the scheme that its technical problem adopts: Microfilter has the lauter tub of outer cover screen cloth, described lauter tub links to each other with motor by rotating shaft, its top is provided with back purge system, described back purge system is made of backwash tube and the backwash nozzle that is installed on the backwash tube, establishes the backwash raceway groove in the lauter tub and links to each other with blow-off pipe;

Described screen cloth is a nickel screen; Described lauter tub material is ABS.

The invention has the beneficial effects as follows:

1. the present invention is made of circular lauter tub and back purge system, the corrosion resistant nickel screen of lauter tub outer cover, slowspeed machine is by rotating shaft, driving lauter tub rotates along circumference, establish backwash tube and backwash nozzle directly over the lauter tub, establish the backwash raceway groove in the lauter tub, main material is ABS, because lauter tub rotates, local blocked screen cloth face, back purge system through top direction inject high pressure water, the particle that is bonded on the screen cloth is dashed from screen cloth diffluence downstream, can overcome the easy corrosion of Microfilter that present production is used, energy consumption is higher, screen cloth is deficiency such as obstruction easily, is applicable to that engineering of water treatment carries out the equipment of solid and fluid separation applications to waste water, specifically is applicable to fish, the Separation of Solid and Liquid of shrimp wastewater of industrial cultivation.

2. the present invention is because material is the ABS material, and is in light weight, only needs a less motor just can drive its rotation, compares the equipment that cast iron, stainless steel material are made, and can save energy consumption.

Description of drawings

Fig. 1 is vertical section structure figure of the present invention.

Fig. 2 is the left view of Fig. 1.

Embodiment

Shown in Fig. 1～2, the circular lauter tub 6 of outer cover screen cloth of the present invention places in the water storage box 5, communicate with water inlet pipe 1, described lauter tub 6 links to each other with slowspeed machine 3 (rotating speed is 7 rev/mins) by rotating shaft, slowspeed machine 3 is supported by motor bearing 4, recoiling device is installed in lauter tub 6 tops, described back purge system is made of backwash tube 8 and the backwash nozzle 7 that is installed on the backwash tube 8, backwash nozzle 7 is the cylinder of hollow, and length is 10mm, and endoporus is 3mm, establishing the backwash raceway groove in the lauter tub 6 links to each other with blow-off pipe 9, the backwash raceway groove is located at lauter tub 6 inner the first half, keeps wastewater level low as to be enough to make the backwash raceway groove to bump less than water, and the backwash raceway groove compiles recoil water and flows to blow-off pipe 9, the sewage that filters mesh is pooled in the water storage barrel 5, discharge by outlet pipe 2, blowoff valve 10 is established at 5 ends of water storage barrel, can regularly remove contamination again; The Microfilter screen cloth is selected nickel screen for use, rotary screen skeleton, bearing, pipeline and joint, protective cover, water storage barrel 5 etc. are made (ABS is made of three kinds of chemical monomers of poly-propionitrile-BS) by ABS, screw is a stainless steel material, can bear seawater corrosion effectively, prevent corrosion, because material is the ABS material, in light weight, only need less motor just can drive its rotation, compare the equipment that cast iron, stainless steel material are made, can save energy consumption.

When normal the use, aquaculture wastewater flows into vertically from the water inlet pipe 1 of lauter tub 6 one ends, and slowspeed machine 3 drives lauter tub 6 along the axle center rotation by rotating shaft, radially flows into water storage box 5 by screen cloth less than the suspended particulate substance and the water of mesh, by outlet pipe 2 discharges; Suspended particulate substance greater than mesh is dammed by filter screen, be attached on the screen cloth inner surface, rotate to the top with lauter tub, water under high pressure in the recoil water pipe 8 penetrates by backwash nozzle 7, the particle that is attached on the screen cloth inner surface is washed out, fall in the backwash raceway groove, outside blow-off pipe 9 discharge systems, and so forth, finish whole filter process.Aborning, need regularly open blowoff valve 10, the sewage behind the cleaning water tank is discharged.

Claims

1, a kind of Microfilter, lauter tub (6) with outer cover screen cloth, it is characterized in that described lauter tub (6) links to each other with motor (3) by rotating shaft, its top is provided with back purge system, described back purge system is made of backwash tube (8) and the backwash nozzle (7) that is installed on the backwash tube (8), establishes the backwash raceway groove in the lauter tub (6) and links to each other with blow-off pipe (9).

2, Microfilter according to claim 1 is characterized in that: described screen cloth is a nickel screen.

3, Microfilter according to claim 1 is characterized in that: described lauter tub (6) material is ABS.