CN1101240C

CN1101240C - Press filter

Info

Publication number: CN1101240C
Application number: CN98101863A
Authority: CN
Inventors: 罗成德
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-05-18
Filing date: 1998-05-18
Publication date: 2003-02-12
Anticipated expiration: 2018-05-18
Also published as: CN1235857A

Abstract

The present invention discloses a filter press which comprises a cylindrical casing, wherein, the inner part of the casing is provided with a concentric circle filter plate; the inner part of the concentric circle filter plate is provided with a scraper; the filter plate and the scraper can rotate relatively; and the bottom part of the casing between the filter plate and the casing is provided with a liquid discharging groove channel. The torrential flow does not exist in the liquid to be filtered in the filter plate; a filter cake can be formed inside the filter plate; the filter plate can become a carrier of the filter cake; therefore, the filter press can realize the filtration of the filter cake; an isolating chamber is arranged between the filter plate and the casing; the isolating chamber can carry out the split flow for the clear liquid and the turbid liquid; the bottom part of the isolating chamber is provided with a control head with double friction surfaces; and the control head can realize the dynamic collecting and discharging operation for the filtered liquid in the isolating chamber.

Description

Filter-press

The invention belongs to material disconnecting gear, particularly filter-press.

Up to now, in order to remove solid content in the industrial wastewater, in for example papermaking wastewater, mainly adopt polydisc to reclaim machine and belt filter press, the problem of its existence is that equipment manufacturing cost height and separative efficiency are low.Up-to-date isolation technics is to adopt the pressure pulp screen have special sieve plate to come the solid content in the separation industries waste water or reclaim fiber in the paper waste.The representative products of this pressure filtration sieve is to adopt the tubular stainless steel mesh to do filter medium in the pot type device.The shortcoming of its existence is:

-the turbulent flow that caused by the pulp screen rotor has stoped forming of filter cake, can not form filter effect cake filtration preferably;

Gu-simple strainer filtering can not reach good liquid---separating effect;

-clear filtrate can't separate with turbid filtrate.

The objective of the invention is to propose a kind of new filter-press technical scheme, make it can realize effective cake filtration technology, and can and improve unit and filter and the filter capacity of area clear, turbid filtrate separation.

Filter-press of the present invention comprises cylinder shell, in the built-in concentric circles filter plate of housing, filter plate scraper is set, and filter plate is relative with scraper to be rotated, and the housing bottom between filter plate and the housing is provided with the discharge opeing conduit.

Described filter plate can be fixing filter plate, and then scraper is a revolving scraper; Between housing and filter plate, isolation ward is set, the wall height of isolating locular wall is not less than liquid level in the filter plate, and be tightly connected with filter plate and housing one or split, the isolation ward bottom also is provided with the control head that rotates synchronously with revolving scraper, offers pod apertures on the control head, at least two of pod apertures and the different radii place of separating and setting up for the time frid in each isolation ward, housing bottom cooperates the row's of being provided with filtered solution frid with control head, the annular row that each pod apertures on row's filtered solution frid on the corresponding control head is provided with mutual separation filters liquid bath, each annular row filters liquid bath respectively the outage filtered solution pipeline that runs in outward; Can be provided with the isolation ward chassis with the housing one in isolation ward bottom, offer liquid drain hole on the chassis, the isolation ward chassis is tightly connected with isolating locular wall one or split, and control head is that face contacts with the chassis, filter chamber; The inlet of filter is located at housing top, the dreg discharging liquid mouth is located at housing bottom.

Described scraper also can be a fixed doctor, and then filter plate is the rotation filter plate; Can between housing and filter plate, be provided with plural isolation ward with the filter plate one, the wall height of isolation ward is not less than liquid level in the filter plate, the isolation ward bottom is provided with pod apertures, the position of same indoor pod apertures is at the same radius place, the position branch of the pod apertures in the different chamber is located at and is no less than different radii place, two places, the pod apertures of corresponding different radii is provided with the annular row filtration liquid bath of mutual isolation on the housing below isolation ward, each annular row filters liquid bath respectively the outage filtered solution pipeline that runs in outward, and the inlet of filter is located at housing top, the dreg discharging liquid mouth is located at housing bottom; Also can be the plural isolation ward that is provided with between housing and filter plate with the housing one, the isolation ward bottom be provided with outage and connects Drainage pipe respectively, and the inlet of filter is located at housing top, the dreg discharging liquid mouth is located at housing bottom.

The substantive features that the present invention gives prominence to are to establish counterrotating scraper in the tubular filter plate, do not have turbulent flow in the liquid to be filtered in the filter plate, can make filter plate become the carrier of filter cake at the inboard filter cake that forms of filter plate, realize cake filtration; Another outstanding substantive distinguishing features is to be provided with isolation ward between housing and filter plate, with clear, turbid liquid shunting discharging; Another substantive distinguishing features of giving prominence to is that isolation ward bottom is provided with two rubbing surfaces and is provided with the control head of pod apertures, can realize the dynamic collection discharging to the filtered solution in the isolation ward.Marked improvement of the present invention is simple in structure, has the effect of high efficiency filter and separation of cloudy and clear simultaneously.

Shown in the embodiments of the invention figure:

Fig. 1 is that filter plate and isolation ward are fixed, a kind of structural form of scraper and control head rotation; Wherein Figure 1A is main pseudosection, and Figure 1B is a schematic top plan view;

Fig. 2 is that scraper is fixed, a kind of structural form of filter plate and isolation ward, control head rotation; Wherein Fig. 2 A is main pseudosection, and Fig. 2 B is a schematic top plan view;

Fig. 3 is that scraper and isolation ward are fixed, a kind of structural form of filter plate rotation; Wherein Fig. 3 A is main pseudosection, and Fig. 3 B is a schematic top plan view.

Number in the figure is represented:

1, housing, 2, filter plate, 3, scraper, 4, rotating driveshaft, 5, isolation ward, 6, dividing plate, 7, control head, 8, the clear liquid pod apertures, 9, turbid liquid pod apertures, 10, sealing ring, 11, clear liquid cannelure floss hole, 12, turbid liquid cannelure floss hole, 13, at the bottom of the shell, 14, isolation ward chassis, 15, the waste water import, 16, slag-drip opening.

Accompanying drawing is specified the present invention in conjunction with the embodiments:

As shown in Figure 1, 2, 3, filter-press of the present invention comprises cylinder shell 1, in the built-in concentric circles filter plate 2 of housing, filter plate scraper 3 is set, filter plate 2 and scraper 3 relative rotations, and the housing bottom 13 between filter plate 2 and the housing 1 is provided with

discharge opeing conduit

11,12.

As Figure 1A, embodiment structure shown in the B is: scraper 3 is connected with rotating driveshaft 4 one by cantilever, filter plate 2 and its with housing 1 between be fixed on the housing 1 with the isolation ward 5 of dividing plate 6 separations, in isolation ward 5 bottoms chassis 14 can be set, chassis 14 is provided with osculum, chassis 14 is face with control head 7 and contacts, the effect on chassis 14 is that isolation ward is better sealed, chassis 14 and housing 1 be wholely set can also be convenient for assembly during complete machine to the location of filter plate and isolation ward wallboard, can also on the contact-making surface of chassis 14 and control head 7, apply wear-resisting, lubricant coating, frictional resistance between the control head 7 that reduces chassis 14 and establish below, control head 7 is connected with rotating driveshaft 4 one by cantilever, express on Figure 1B on the different breadths of control head 7 and set up pod apertures 8 separately, 9, at least two of pod apertures, and branch is located at the different radii place, pod apertures 8 on the 13 corresponding control heads 7 of housing 1 bottom, 9 are provided with cannelure, express cannelure 11 on Figure 1A, 12 section and leakage fluid dram thereof, between control head 7 and housing bottom 13, be provided with sealing ring 10, waste water import 15 is located at housing top, and cross over isolation ward 5 and direct reach the filter plate inner core, slag-drip opening 16 is located at housing bottom.

The course of work of Fig. 1 embodiment is: waste water enters in the filter plate 2, in the process that it moves downward, pass through filter plate 2 seepage towards periphery under pressure, and rapidly at the filter plate 2 inboard filter cakes that form, filter plate 2 is carriers of filter cake, filter cake has good filter effect, thereby can substitute price expensive stainless steel micropore filter plate with common filter plate.When filter cake accumulation blocked up, scraper 3 rotations come it is scraped becomes filter residue, discharges through the slag-drip opening 16 of housing bottom; With scraper 3 synchronously the isolation wards 5 of rotation accepted filtered solution, trailing what accept in the isolation ward of scraper is filtrate before filter cake forms, its turbidity is high relatively; Thereafter accepted filtrate after filter cake forms up to the isolation ward of scraper guide position, realized with the filter cake being that filter medium carries out pressure or vacuum filtration, its clarity is high relatively; Filtered solution in the isolation ward is by the open-work on the chassis 14, through pod apertures 8,9 shuntings that are provided with on control head 7, by clear, the turbid liquid of

cannelure

11,12 shuntings of corresponding pod apertures 8,9; Can be according to using needs that a plurality of pod apertures and cannelure are set, the filtrate of the different turbidity that each isolation ward 5 is accepted is located at the pod apertures shunting at different radii place respectively via branch, derive through each corresponding cannelure again.Scraper 3 rotations are very slow, and filter cake is formed, and can periodically destroy filter cake again simultaneously.After first scraper has destroyed established filter cake, before arriving, second scraper do not still have time enough to make filter cake form and carry out the cake filtration of certain hour again.For filtering area is directly flow through in the charging that stops low concentration, can design in the bottom of scraper rotor one the scraper direction of advance have fan-shaped opening the end and with the vertical partition plate of filtering area equal height, make filtrate be split into two parts, not expression among the figure, but can imagine according to this explanation.Two fan-shaped openings can allow in the each several part destroyed filter cake successfully discharge filtering area, and vertical partition plate can stop the filter cake fragment of scraper one side to mix with the feed liquid of membrane backside.

Difference as Fig. 2 A, B illustrated embodiment structure is: scraper 3 is connected with housing 1 one by cantilever, filter plate 2 is connected with rotating driveshaft 4 one by cantilever with isolation ward 5 one, control head 7 below the chassis 14 of isolation ward 5 is an one with housing bottom 13, pod apertures 8,9 is in relative resting position with scraper 3, has cancelled cannelure.

The course of work of Fig. 2 embodiment is: waste water is entered in the filter plate 2 by import 15, leaks into isolation ward 5 through filter plate 2, discharges through the

pod apertures

11,12 that chassis 14 enters at the bottom of the shell on 13.With the difference of embodiment 1 be that scraper 3 maintains static, and filter plate 2 rotates with isolation ward 5, its work principle of filter is identical with Fig. 1 embodiment.

Difference as Fig. 3 A, B illustrated embodiment structure is: isolation ward 5 and housing 1 one, scraper 3 is by cantilever and housing 1 one, filter plate 2 drives one by cantilever and rotation, and scraper 3 is by cantilever and housing 1 one, and filter plate 2 is connected with rotating driveshaft 4 one by outstanding; Filter plate 2 rotations, and scraper 3 is in relative static position with isolation ward 5; On the isolation ward outer wall, be provided with the discharge opeing mouth of

pipe

11,12 and lead to hull outside.

The course of work of Fig. 3 embodiment is: waste water leaks into isolation ward 5 through filter plate 2 in import 15 enters filter plate 2, derives through

discharge outlet

11,12; The principle of its filtration is identical with Fig. 1 embodiment.

The working portion of filter-press of the present invention is all invaded in water, and its working time is long, the efficient height.

The present invention goes for industrial filter equipment, also goes for breadboard miniature instrument.Can be used for wastewater treatment, also can use the separation of mixing material.

Claims

1. a filter-press comprises cylinder shell, it is characterized in that in the built-in concentric circles filter plate of housing, the filter plate scraper being set, and filter plate is relative with scraper to be rotated, and the housing bottom between filter plate and the housing is provided with the discharge opeing conduit.

2. filter as claimed in claim 1 is characterized in that described filter plate is fixing filter plate, and scraper is a revolving scraper.

3. filter as claimed in claim 2, it is characterized in that between housing and filter plate, isolation ward being set, the wall height of isolating locular wall is not less than liquid level in the filter plate, and be tightly connected with filter plate and housing one or split, the isolation ward bottom also is provided with the control head that rotates synchronously with revolving scraper, offer pod apertures on the control head, at least two of pod apertures and the different radii place of separating and setting up for the time frid in each isolation ward, housing bottom cooperates the row's of being provided with filtered solution frid with control head, each pod apertures of corresponding control head is provided with the annular row filtration liquid bath of mutual separation on row's filtered solution frid, each annular row filters liquid bath respectively has outage outer by the filtered solution pipeline, and the inlet of filter is located at housing top, the dreg discharging liquid mouth is located at housing bottom.

4. filter as claimed in claim 3 is characterized in that being provided with in isolation ward bottom the isolation ward chassis with the housing one, and the isolation ward chassis is tightly connected with isolating locular wall one or split, and control head is that face contacts with the chassis, filter chamber.

5. filter as claimed in claim 1 is characterized in that described scraper is a fixed doctor, and filter plate is the rotation filter plate.

6. filter as claimed in claim 5, it is characterized in that between housing and filter plate, also being provided with plural isolation ward with the filter plate one, the wall height of isolation ward is not less than liquid level in the filter plate, the isolation ward bottom is provided with pod apertures, the position of same indoor pod apertures is at the same radius place, the position branch of the pod apertures in the different chamber is located at and is no less than different radii place, two places, be provided with the annular row filtration liquid bath of mutual isolation on the housing below isolation ward in the pod apertures of different radii, each annular row filters liquid bath respectively the outage filtered solution pipeline that runs in outward, and the inlet of filter is located at housing top, the dreg discharging liquid mouth is located at housing bottom.

7. filter as claimed in claim 5 is characterized in that also being provided with the isolation ward with the housing one between housing and filter plate, the isolation ward bottom is provided with outage and connects Drainage pipe respectively.