CN201410323Y

CN201410323Y - Slurry filter

Info

Publication number: CN201410323Y
Application number: CN200920125217XU
Authority: CN
Inventors: 李鉴明; 陈少平; 张涛; 刘松林; 张瑞
Original assignee: Wengfu Group Co Ltd
Current assignee: Wengfu Group Co Ltd
Priority date: 2009-01-08
Filing date: 2009-01-08
Publication date: 2010-02-24
Anticipated expiration: 2019-01-08

Abstract

The utility model discloses a slurry filter which is characterized by comprising a barrel body (1), a filter screen (2), a washing port (3), a slagging port (4), a feed port (5), a discharge port (6),a blind plate (7) and a semi-circle blind plate (8), wherein the filter screen (2) is positioned in the intermediate portion of the barrel body (1), the feed port (5) is positioned on the bottom portion of the barrel body (1), the washing port (3) is positioned on the top portion of the barrel body (1), and the slagging port (4) is positioned on the bottom portion of the barrel body (1). The blind plate (7) is positioned on the top portion of the barrel body (1), the semi-circle blind plate (8) is positioned on one end of the lower half portion of the barrel body (1) near the discharge port (6). The slurry filter prolongs the filter shutting-down cleaning period and has high safety, and the on-line cleaning can be realized.

Description

The slurry filtration device

Technical field

The utility model belongs to chemical machinery field, relates in particular to a kind of filter.

Background technology

Existing ammonium phosphate slurry filtration device is the inner/outer tube structure, and inner cylinder is a no top cover screen tube, and barrel and base plate boring are made screen pack and used; Outer cylinder is the closed container of a band fast-open type top cover, is connected with pipeline.Inside and outside cylinder does not have fixedly connected, and only cylinder inner wall welds an annulus outside, and inner cylinder is supported on the annulus.During use: phosphor ammonium slurry is introduced into inner core, and impurity is blocked in wherein, and the slip after the filtration enters urceolus, enters spray pump then; Along with the carrying out that produces, the granule foreign of inner core interception is cumulative, and filter area is reduced gradually, do not reach the minimum continuous flow of technological requirement, the cleaning of must stopping this moment, the method for cleaning is: take filter outer cylinder top cover apart, inner core is proposed, go out filter residue clearly.

Mainly there is following shortcoming in existing filter:

1) cleaning cycle is short: because the bulky grain filter residue is attached directly on the filter screen, filter area is reduced, thereby filter screen stops up fast.

2) poor stability: when the large particulate matter of cleaning filter screen (inner core) interception, must take filter urceolus top cover apart.And this moment, because reactor or slip heater have certain head of liquid, the high temperature slip that has pressure very easily ejects in filter urceolus top cover unloading process, causes operating personnel to be scalded.

3) scale removal process labour intensity is big.Because existing filter can't be discharged the granule foreign that filters interception in process of production, and the progressively increase of granule foreign will cause filter area to reduce.For this reason, reach the purpose that prolongs cleaning cycle, unique way is that filter size is amplified, and makes filter area more than needed more.But design the consequence of bringing like this is when stopping cleaning, to have assembled a large amount of filter residues in the filter inner core, inner core be proposed, and very effort is an example with 200,000 tons of/year MAP Plant, and each parking cleaning all must propose inner core with 1 ton of chain block.

4) can not Hand scarf.Because the filter residue of filter inner core interception can't be discharged at production period, so can't realize on-line cleaning.

5) " detonation " phenomenon.The phosphor ammonium slurry conventional filter for reducing labor intensity, improves factors such as cleaning efficiency owing to need often cleaning, and the filter top cover is designed to the fast-open type structure.In process of production,, cause that the filter internal pressure raises, often cause the fast-open type top cover of filter to be washed open (industry generally is called " detonation " with this situation), great personal safety or environmental protection accident take place because strainer screen stops up.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned shortcoming and a kind of filter that prolonged of providing stops cycle of cleaning, safe.Can realize the slurry filtration device of on-line cleaning.

Slurry filtration device of the present utility model comprises cylindrical shell, filter screen, rinse mouth, slag-drip opening, charging aperture, discharging opening, blind plate, half garden blind plate, wherein: filter screen is positioned at the cylindrical shell middle part, charging aperture is positioned at cylindrical shell 1 bottom, and rinse mouth is positioned at the cylindrical shell top, slag-drip opening is positioned at the cylindrical shell bottom.

Above-mentioned slurry filtration device, wherein: blind plate is positioned at the cylindrical shell top, and half garden blind plate is positioned at the cylindrical shell Lower Half by discharging opening one end.

Method of the present utility model compared with prior art, as can be known from the above technical solutions, filter residue is deposited to the filter bottom decanting zone, has realized separating of filter residue and filter screen, make filter screen in process of production possibility of jamming significantly reduce, thereby prolonged cycle of stopping and cleaning.When the blind plate cleaning was torn in parking open, as long as the drain valve that will be connected with slag-drip opening is earlier opened, the slip in the discharge filter can discharge the pressure in the filter, and when making the dismounting blind plate, slip can not spray and injure operating personnel, thereby safe.Owing to designed rinse mouth and slag-drip opening, open drain valve at production period and can the impurity in the decanting zone be discharged, and need not stop production in the extremely short time, realized on-line cleaning, reduced labour intensity.Because the cleaning frequency prolongs, and has realized on-line cleaning, the blind plate on the filter, half garden blind plate all no longer adopt the fast-open type structure, and adopt bolt to connect, and have stopped filter " detonation " phenomenon in process of production.Filter of the present utility model can be widely used in the filtration of various pasty materials.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

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

Fig. 3 is the right view of Fig. 1.

Mark among the figure:

1, cylindrical shell; 2, filter screen; 3, rinse mouth; 4, slag-drip opening; 5, charging aperture; 6, discharging opening, 7, blind plate, 8, the semicircle blind plate.

The specific embodiment

Below in conjunction with accompanying drawing, its specific embodiment of slurry filtration device, structure, feature and effect thereof to foundation the utility model proposes are described in detail as follows:

Referring to Fig. 1-3, the slurry filtration device comprises cylindrical shell 1, filter screen 2, rinse mouth 3, slag-drip opening 4, charging aperture 5, discharging opening 6, blind plate 7, half garden blind plate 8.Filter screen 2 is positioned at cylindrical shell 1 middle part, and charging aperture 5 is positioned at cylindrical shell 1 bottom, and rinse mouth 3 is positioned at cylindrical shell 1 top, slag-drip opening 4 is positioned at cylindrical shell 1 bottom.

Blind plate 7 is positioned at cylindrical shell 1 top, and half garden blind plate 8 is positioned at cylindrical shell 1 Lower Half by discharging opening 6 one ends.

During use: phosphor ammonium slurry is entered by the charging aperture (pipe) 5 of filter cylinder 1 bottom, the suction force of dependence pump, the head of liquid of slurry reactor (or heat exchanger) are as motive force, make slip pass filter screen 2, slip after the filtration is discharged from discharging opening 6, the filter residue of being tackled by filter screen 2 arrives filter cartridge body 1 bottom by gravitational settling, thereby reaches the effect of filtration.Rinse mouth 3 at filter cylinder 1 top is introduced steam or hot water injection's filter thus, and under hot water or steam flush, filter residue is discharged by the slag-drip opening 4 of filter bottom.The slurry filtration device is installed at process pipe 20～30 degree that tilt, and so more helps the decanting zone that large particulate matter accumulates in slag-drip opening 4 tops and discharges smoothly.Because the ammonium phosphate slip has certain viscosity, even if do not having under the situation of granule foreign, also can be attached on filter wall and the filter screen, form the dirt layer, need regularly to clean, filter top has designed detachable blind plate 7, and Lower Half designs detachable semicircle blind plate 8, makes regularly to clean the usefulness of filter screen and filter wall.The cleaning because the characteristic that the phosphorus ammonium is produced, device must regularly be stopped, so, tear the work that blind plate 7 and semicircle blind plate 8 clean open and only carry out during this period, can discharge filter residue by slag-drip opening 4 in the production process at ordinary times.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, any technical solutions of the utility model content that do not break away from,, all still belong in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present utility model.

Claims

1, a kind of slurry filtration device, it is characterized in that: comprise cylindrical shell (1), filter screen (2), rinse mouth (3), slag-drip opening (4), charging aperture (5), discharging opening (6), blind plate (7), half garden blind plate (8), filter screen (2) is positioned at cylindrical shell (1) middle part, and charging aperture (5) is positioned at cylindrical shell (1) bottom, and rinse mouth (3) is positioned at cylindrical shell (1) top, slag-drip opening (4) is positioned at cylindrical shell (1) bottom.

2, slurry filtration device as claimed in claim 1 is characterized in that: blind plate (7) is positioned at cylindrical shell (1) top, and half garden blind plate (8) is positioned at cylindrical shell (1) Lower Half by discharging opening (6) one ends.