CN2310667Y

CN2310667Y - Cylinder type press filter

Info

Publication number: CN2310667Y
Application number: CN 97233418
Authority: CN
Inventors: 汤力
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-06-19
Filing date: 1997-06-19
Publication date: 1999-03-17
Anticipated expiration: 2007-06-19

Abstract

The utility model relates to a cylinder type pressure filter. A sealed cylindrical bin is provided, a rotary drum is packed by filter cloth, a hollow shaft of the rotary drum is connected with a distributing head, and a filter liquor pipe is communicated with the outside of the bin. A plate scraping machine on the inner circle of the bin is used for continuously discharging materials. The cake moisture is 12-16%, after black water and sewage are treated, so that the condition that coal slurry or sludge can not be directly transported after loaded on vehicles and areas are polluted is thoroughly solved. Using units don't need to change foundation bolts, and the utility model can be installed for replacement after original filters or pressure filters are detached. Manufacturing unit can produce the utility model without adding new devices. The utility model can be widely used for the sewage treatment in industries, such as coal, metallurgy, petroleum oil, chemical industry, city environmental protection, etc.

Description

The cartridge type pressure filter

The utility model relates to a kind of pressure filter, especially for the recovery that reaches fines in the sewage in the black water of colliery, realizes a kind of device of Separation of Solid and Liquid.Belong to sewage treatment area.

(solid-liquid separation technique of d＜0.5mm) often adopts a, vacuum filter to China coal preparation plant fines; B, screen cloth sedimentation-type centrifuge or sedimentation-type centrifuge; C, belt filter press; D, sheet frame or chamber filter press are handled.Coal preparation plant all uses the make a final check equipment of filter press as black water, sewage disposal at present.When black water or sewage by behind the filter press, coal slime in the black water or the mud in the sewage form filter cake and obtain reclaiming, the moisture in its black water or the sewage forms that filtrate reaches promptly that environmental requirement can be discharged or is multiplexing.But maximum problem be filter cake moisture up to 22～26%, directly entrucking transportation separately.If enter coal bunker, lump among the Yi Zaicang, stop up Hatch Opening, can not put the storehouse, influence entrucking and production.The filter cake moisture height can only dry in the air to reduce moisture in the occupied ground solarization, and floor space is big like this, pollutes ground.In addition, because the filter cake moisture height, price is low, influences economic benefit.

The purpose of this utility model is on the basis of conventional vacuum filter, install some parts or mechanism additional, change the pressure filtration mode into by vacuumizing filtration, and realize continuous pulp discharge, makes a kind of automatically, the filter-cartridge type pressure filter of low moisture, continuous pulp discharge.It can make filter cake moisture drop to 12～16% by 22～26%, thoroughly solves the directly entrucking transportation of coal slime or mud, pollutes the situation on ground.

Solution of the present utility model is to realize (referring to accompanying drawing) like this: a cartridge type has the pressurization storehouse (1) of end seat to be provided with safety valve (2) air inlet pipe (3).Filter cloth (18) parcel rotary drum (6) and live-rollers (20).Carrying roller (21) is tightly held filter cloth (18).Half of rotary drum (6) is immersed in a strip and has in the cell body (4) of feed pipe (5).Rotary drum (6) surface is divided into plurality of rows filter chamber (7), which is provided with filter screen (8) along circumference.Rotary drum (6) turning cylinder is a quill shaft (10), and each root filtrate pipe (11) of its internal placement is connected with the filtrate pipe (9) that each row's filter chamber (7) stretches out.Quill shaft (10) end flat closely leans against on the dispensing head (12).Institute was the center of circle near the plane that contacts dispensing head (12) with the central point when quill shaft (10) rotated, and was divided into three fan-shaped parts, made dispensing head (12) be divided into three not connected cavity area: filtering area (13), dry section (14), transition region (15).Dispensing head (12) maintains static, and filtering area (13) has filtrate pipe (16) and dry section (14) to have filtrate pipe (17) to stretch out outside the gas-tight silo (1), communicates with atmosphere.

By the rotation of live-rollers (20) and filter cloth (18), the filter cake (19) on the filter cloth (18) will be removed.Set up material scraping plate (22) and hairbrush (23) that filter cloth (18) is cleaned with water totally in the front of carrying roller (21).On carrying roller (21), set up scavenge pipe (32).

Filter cake (19) is discharged into semicircle cell body (25), scrapes into deflector chute (26) by circle scraper plate (28) and enters haul pipe (27) again, and along with the motion of circle scraper plate (28), filter cake (19) is scraped discharge groove (31) and promptly is discharged from outside the gas-tight silo (1).

The utility model remarkable result is to adopt compressed air forced coal muddy water or sewage filters and further air-dry to the filter cake that forms, thereby makes filter cake moisture drop to 12～16% by original 22～26%.Thoroughly solving coal slime or mud can not binning, the directly situation on entrucking transportation pollution ground.Characteristics of this device are that filter cake was forced to discharging after filter cloth rotated, and can not retain or be stained with filter cake on the filter cloth.Another outstanding feature is to wash from the back of the body of filter cloth, and the high pressure clear water fully penetrates micropore, and filter cloth is cleaned up thoroughly.This installs another characteristics is continuous pulp discharges, and the circle scraper plate is constantly discharged filter cake outside the storehouse in the continuous motion of pipeline internal sealed.

Fig. 1 is a whole assembling schematic diagram of the present utility model

Fig. 2 is the of the present utility model whole assembling schematic diagram of observing from another side

Fig. 3 is the cutaway view (A-A) of Fig. 1

Among the figure:

1-has the pressurization storehouse of sitting at the end

2-safety valve 3-air inlet pipe

4-stores the cell body 5-feed pipe of black water or sewage

6-rotary drum 7-filter chamber

8-filter screen 9-filter chamber filtrate pipe

10-rotates quill shaft 11-quill shaft filtrate pipe

12-dispensing head 13-dispensing head filtering area

14-dispensing head dry section 15-dispensing head transition region

16-filtering area filtrate pipe 17-dry section filtrate pipe

The 18-filter cloth

19-filter cake (coal slime or mud after moisture reduces)

20-live-rollers 21-carrying roller

22-material scraping plate 23-hairbrush

24-circle scratch board conveyor structure 25-semicircle cell body

26-deflector chute 27-haul pipe

Chain between the 28-circle scraper plate 29-scraper plate

30-sprocket wheel 31-discharge groove

The 32-scavenge pipe

The contrast accompanying drawing further describes the working condition of this device below:

The course of work of this device is continuous.In gas-tight silo (1), be provided with the cell body (4) of storing black water or sewage.Half of rotary drum (6) is immersed in the cell body (4).Rotary drum (6) surface is divided into plurality of rows filter chamber (7) along circumference, and filter screen (8) is housed on the filter chamber, stretches out filtrate pipe (9) in each row's filter chamber and links to each other with a filtrate pipe (11) in the rotary drum quill shaft (10).Quill shaft reaches wherein, and the plane at filtrate pipe two ends closely contacts with two dispensing heads (12) plane, this dispensing head plane is that the center of circle is divided into three fan-shaped parts with the axle center, make dispensing head be divided into three not connected cavity area, be respectively filtering area (13), dry section (14) and transition region (15).Filtering area (13), dry section (14) have filtrate pipe (16), (17) to communicate with atmosphere outside the storehouse respectively.Filter cloth (18) parcel rotary drum (6) and live-rollers (20).Dispensing head (12) is fixed.Rotary drum (6) rotates continuously, and quill shaft (10) and filtrate pipe (11) thereof also rotate and pass through again and again filtering area (13), dry section (14) and the transition region (15) in the dispensing head (12) continuously.

Situation at filtering area (13) is: a part of filtrate pipe (11) in the quill shaft (10) just and the filtering area (13) in the dispensing head (12) be connected, the filtrate pipe of this part filtrate pipe and dispensing head filtering area (16) is connected, communicate with atmosphere outside the storehouse, promptly the filtrate pipe with a part of filter chamber (7) also communicates, in other words, at this moment, the filter chamber that is immersed on the drum surface in cell body black water or the sewage communicates with atmosphere outside the storehouse, thereby pressure differential arranged, air pressure is compressed black water or sewage to this part filter chamber, moisture is by the micropore of filter cloth, the mesh of filter screen, filter chamber and filtrate pipe flow out outside the storehouse, and coal slime or mud are stayed on the filter cloth, form filter cake.

The situation of dry section (14) is: a part of filtrate pipe (11) in the quill shaft (10) just and the dry section (14) in the dispensing head (12) be connected, the filtrate pipe (17) of this a part of filtrate pipe and dry section is connected, communicate with atmosphere outside the storehouse, promptly the filtrate pipe with a part of filter chamber (7) also communicates, in other words, at this moment, this a part of filter chamber is to communicate with atmosphere outside the storehouse, thereby pressure differential arranged, the filter cake that air pressure will form on filter cloth compresses, further air-dry, the moisture that extrusion is gone is by the micropore of filter cloth, the mesh of filter screen, filter chamber and filtrate pipe flow out outside the storehouse, and filter cake moisture further reduces.

The situation of transition region (15) is: a part of filtrate pipe (11) in the quill shaft (10) just and the transition region in the dispensing head (12) be connected, because transition region does not have pipe to communicate with atmosphere outside the storehouse, this a part of filtrate pipe can not communicate with atmosphere outside the storehouse, the filtrate pipe that is a part of filter chamber can not communicate with atmosphere outside the storehouse, in other words, at this moment, this a part of filter chamber can not communicate with atmosphere outside the storehouse, no pressure differential can not leaked gas yet.At this moment, filter cloth is not close on the rotary drum just.The filter cake that is wrapped on the filter cloth of live-rollers (20) is removed because of the filter cloth turnover.

Because rotary drum (6) rotates continuously, quill shaft (10) and filtrate pipe (11) thereof go round and begin again continuously through filtering area (13), dry section (14) and the transition region (15) of dispensing head (12), correspondingly, filter chamber, filter screen and the filter cloth on the rotary drum face also experiences filtration, drying and transition three phases continuously circularly successively.On filter cloth, continuously black water filter is formed filter cake like this and be compressed air-dry, be removed.The continuous rotation of rotary drum constantly repeats said process.

By live-rollers (20), material scraping plate (22), hairbrush (23) filter cake is discharged in the semi-round groove body (25), being scraped deflector chute (26) by circle scraper plate (28) enters in the haul pipe (27), brought into discharge groove (31) by the circle scraper plate again, promptly discharge outside the gas-tight silo (1).Circle scraper plate (28) is linked by a joint a chain (29), drives by two sprocket wheels (30), and round scraper plate is moved in semicircle cell body and haul pipe.

In the said process, air for continuous ground is carried from air inlet pipe (3).Black water or sewage constantly enter into cell body (4) and form filter cake at filter cloth from feed pipe (5), are discharged outside the storehouse by discharge groove, and its moisture is flowed out outside the storehouse by filtrate pipe, and like this, black water or sewage are realized Separation of Solid and Liquid by this device.

Pollute and whether filter effect decides scavenge pipe (32) to the cleaning of filter cloth according to filter cloth.

Claims

1, a kind of by the pressurization storehouse, the rotary drum filter structure, the live-rollers shedding mechanism, the cartridge type pressure filter that circle scratch board conveyor structure and switch board etc. are formed is characterized in that:

A gas-tight silo (1) that has the end to sit has safety valve (2) air inlet pipe (3), filter cloth (18) parcel rotary drum (6) and live-rollers (20), rotary drum (6) surface is divided into plurality of rows filter chamber (7) along circumference, which is provided with filter screen (8), each root filtrate pipe (11) in rotary drum (6) quill shaft (10) links to each other with the filtrate pipe (9) that each row's filter chamber (7) stretches out, dispensing head (12) is divided into filtering area (13), dry section (14) and transition region (15)

2, according to the said cartridge type pressure filter of claim 1, it is characterized in that:

Be provided with material scraping plate (22) and hairbrush (23) in the front of carrying roller (21), on carrying roller (21), be provided with scavenge pipe (32).

3, according to the said cartridge type pressure filter of claim 1, it is characterized in that:

Circle scraper plate (28) is connected together by chain (29), and in semi-round groove body (25) and haul pipe (27), be with by sprocket wheel (30) and moving, deflector chute (26) connects the top of semi-round groove body (25) bottom and haul pipe (27), discharge groove (23) passes and is welded on the wall in pressurization storehouse (1), is connected with the bottom of haul pipe (27).