JPS6253710A - Disc filter for separating suspended substance - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for separating non-homogeneous fluids;
More specifically, it relates to a disk filter for separating suspended matter.

The filters according to the invention can find advantageous applications in chemical testing, for example in the petrochemical industry for the deparaffinization of diesel oil and for the production of boric acid.

The device according to the invention can furthermore be used advantageously for the production of mineral fertilizers.

[Prior Art] As a disk filter for separating suspended matter, a disk filter is known which includes a stationary removable housing including a pass and a case hermetically connected to the housing. There is (American periodical magazine 1Ch@m1aal E
ngins@rlng e1621 # 1963 +
(See page 114). The housing rotatably accommodates a filtration sector by a drive means, and the filtration sector is connected to a header for discharging filtrate and a distributor provided on the outside of the housing. Means for supplying treatment agent is attached to the filter housing. Between the filtration filters within the housing is a chamber for collecting the filtrate, which chamber has means for evacuating the filtrate and conveying it away from the filter.

To separate suspended matter, this known filter works as follows. The suspension is delivered under pressure to the filter housing. The filtration process is ensured by the excess pressure created above the surface of the suspension within the filter housing. Due to the pressure difference, the filtrate accumulates in the filtration sector, which is immersed in suspension, and the filtrate is discharged via the header to the distributor. During rotation, the sectors carrying the filtrate are allowed to be dried by the air which separates the suspension and creates a pressure differential within the filter housing. During further rotation of the sector, one filtrate is dropped into the collection chamber. The filtrate thus collected is discharged from the chamber by being conveyed through the 'ff-) pulp.

Due to the fact that the air supplied to the housing acts as a moving force that creates a pressure difference during filtration and filtrate drying, it is not possible to wash out the filtrate. This is because the cleaning fluid falls into the path containing the original suspension. In view of the above, this prior art filter structure was not suitable for providing different treatment agents for washing off the filtrate. Furthermore, since the pressure of the drying air is equal to the pressure of the air used for the filtration process, it appears impossible to provide an air pressure differential to control the process. Furthermore, multiple washes and pressure differentials are not provided, which affects the quality of the final product and reduces filtration efficiency.

[Problems to be solved by the invention]

The present invention is therefore constructed in such a way that the housing allows the washing of the filtrate in multiple stages with various reactants and the use of pressure differentials to carry out the filtration process, allowing for the washing and drying of the filtrate. The present invention is directed to providing a disc filter for separating suspended matter, which allows obtaining high quality of the final product and improved filtration efficiency.

[Means for solving problems]

The problem is that the housing rotatably accommodates the filtration sector from the drive and stationary means for supplying treatment agent to the housing, and also for discharging filtrate from one filtration application sector. a distributor disposed outside the housing at the outlet of the filtrate, and a chamber for collecting the filtrate in which means for conveying the filtrate and discharging it from the filter are arranged. In a disc filter according to the invention, the housing has an end wall and a cylinder extending longitudinally and radially to form a separate interior space with the end wall, and in these interior spaces there is provided a disc filter. The filter agent sector is disposed in a housing and the housing of the filter is rotatable on a stationary means for providing sealing and supplying treatment agent to the separate interior spaces; means alternatively communicating with and collecting the filtrate during rotation of the housing, the filtrate sector of each interior space of the housing collecting the filtrate attached to the exterior surface of the housing; This is solved by the fact that it is in communication with a header for discharging.

Preferably, a node is arranged on the outer surface of the means for supplying the treatment agent parallel to its axis, and the longitudinal and radial partitions of the housing are provided with seals that are engageable with the pads during rotation of the housing. It is equipped with

Preferably, the outer surface of the means for supplying the treatment agent is i4
The housing includes holes disposed between the holes, which holes ensure passage of the treatment agent into the interior space of the housing.

Alternatively, the filter housing is cantilevered to the means for supplying the treatment agent.

〔Example〕

Referring to FIG. 1, the disc filter comprises a housing 1 which houses a filtration agent sector 2. As shown in FIG. A filter agent sector 2 is attached to the outer surface 3 of the housing 1. The housing l with attached filter agent sector 2 is rotatably mounted on stationary means 4 for supplying treatment agents (proa·ag@nts), the housing l being driven by a drive 5 (FIG. 2). be rotated. The filtration agent sector 2 is located outside the housing 1 of the filter for discharging the filtrate.
It has a header 6 connected to. The stationary means 4 for supplying the treatment agent have a chamber 8 for collecting the filtrate, the chamber 8 housing a means 9 in the form of a screw conveyor;
The filtrate is discharged through outlet 10.

The housing 1 has an end wall 11 and a partition 12 (FIG. 2), the partition 12 extending longitudinally and radially to define an unconnected or separate interior space 1.
3 (FIG. 1) and the filter agent sector 2 is arranged in their internal space 13.

The outer surface 14 of the stationary means 4 for supplying treatment agents is provided with a base plate 15 (FIG. 2), while a groove 15 extending longitudinally and radially of the housing 1 is provided.
2 is provided with a seal 16 that cooperates with the gloss and do 15,
The internal spaces 13 are pressure-sealed to each other. A hole 17 is provided between the pads 15 and 15 on the outer surface 14 of the stationary means 4, the hole 17 being connected to a passage 18 for supplying the desired treatment agent.

The housing l is supported by two supports 19 on the stationary means 4 for supplying treatment agents.

The housing 1 has a gear 20 for connection with the drive means 5.
is provided. A seal or seal 21 is interposed between the housing 1 and the stationary means 4 to prevent leakage of the product to be processed.

A port 22 is provided in the upper part of one device for discharging the filtrate from the internal space 13, and a port 22 is provided in the upper part of the device to discharge the filtrate from the interior space 13.
22 into means 9, by means of which it is transported and discharged from the filter.

The means 9 for transporting and discharging the filtrate are attached to the stationary means 4 for supplying the treatment agent by the use of two double sollets 23 (FIG. 1) mounted with bearings 24. , driven by a drive device 25.

The housing 1 of the filter is attached to a stationary means 4 for supplying the treatment agent, while between the viewer 7 and the housing 1 there is a washer 26 with a hole.
is intervened.

Referring now to FIGS. 3 and 4, another embodiment of a disc filter according to the present invention is shown, which includes a housing 27 and a filter agent sector 29 attached to an outer surface 28 of the housing 27. and. Housing 27 with attached filter agent sector 29 is attached to stationary means 30 for supplying treatment agent. The filtration agent sector 29 has a header 31 connected to a distributor 32 located outside the housing 27 of the filter for discharging filtrate. Inside the stationary means 30, means 33 for discharging the filtrate from the filter are provided, which means 33 are designed as a chute.

The housing 27 has an end wall 34 and a partition wall 35 extending longitudinally and radially to define an unconnected interior space 36 which contains a filter medium. Seal 37 housing sector 29
is arranged in the groove 35 of the housing 27 and ensures the sealing of the interior space 36 when engaged with the outer surface 38 of the means 30.

The outer surface 38 of the means 30 is provided with holes 39, which are connected to channels 40 for introducing the desired treatment agent.

Is the means 30 for supplying the processing agent Sunori? It has a two-toed axle 41 (Fig. 3). The nose housing 27 is cantilevered to the threaded axle 41 of the means 30 by a trunnion 42 carried by two four-wheel bearings 43. A gear 44 is attached to the trunnion 42 to rotate the filter housing 27 from a drive 45.

The means 40 are held fixedly in the claim 48 (FIG. 4) by two bolts 46,47.

A gland seal 49 (FIG. 3) is interposed between the nozzle 27 and the means 30 to prevent leakage of the product to be processed. A port 50 is provided in the tow 1 portion of the means 30 for draining filtrate.

The operation of the disk filter shown in FIGS. 1 and 2 is as follows.

A drive means 5 rotates the filtration agent sector 2 together with the housing 1, and various treatment agents are supplied along the passage 18;
These treatment agents enter the interior space 13 through holes 17 in the outer surface 18 of the means 4.

Depending on the position occupied by a given internal space 13, either the suspension to be treated, or the flushing fluid for washing, or the air for drying the filtrate enters this internal space. Supplied. The suspension entering the internal space 13 is filtered through the filter medium sector 2 due to the excess pressure.

The filtrate thus filtered 5 remains on the surface of the filtrate sector 2, and the filtrate is transported along the header 6 and discharged from the filter via the distributor 7. During the progression of the internal space 13, starting from the product under pressure, according to the gross sequence, the reactant for washing the filtrate (r@ag@+at) and the drying air enter the hole 1.
7.

Depending on the process requirements, the number of cleaning stages can be increased or reduced by sending the required treatment agent also in this or other passages 18 in the path of the interior space 13 in which the sector 2 is located. be able to. As the housing 1 rotates, the filtrate filtered in the sector 2 enters the discharge area, into which compressed air is supplied via the distributor 7 along the header 6 of the filtrate discharge. The compressed air acts to desorb the filtrate from sector 2, whereby this filtrate is transferred to means 4.
is conveyed from the filter through port 22 to a means for discharging the filtrate.

At the same time, the rotation of the housing 10 is accompanied by the cooperation of the seal 16 and the nocud 15, so that a pressure seal between the outside of the internal space 13 of the housing 1 is achieved.

Referring to one embodiment of a disc filter according to the invention shown in FIGS. 3 and 4, the filter operates in a manner similar to that described with reference to FIGS. 1 and 2.

The compressed air acts to dislodge the filtrate from the sector 29 so that this filtrate is conveyed through the port 50 of the means 30 towards the means 33 in the form of a trough or chute and along the means 33. discharged from the filter.

〔Effect of the invention〕

The ability to rotate the housing as well as providing separate pressure-sealed internal spaces therein allows each separated internal space to be in communication with a means for supplying the desired process reactants. The filtrate adhering to the sector can be washed in multiple stages.

Moreover, by providing the filter with such internal spaces, it is possible to ensure a pressure difference in each of the internal spaces according to the process conditions, including operations such as filtration, multi-stage washing, drying and filtrate discharge.

Another advantage of the proposed disc filter lies in the provision and cooperation of a knot and a seal in the middle of the rotation of the housing, which ensures a reliable pressure sealing of the internal space.

Providing holes in the outer surface of the filter for supplying treatment agents between the nozzles helps prevent mixing of the various treatment reactants in adjacent interior spaces.

When the filter housing is cantilevered, the floor space occupied by the filter is significantly reduced.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a disc filter according to the present invention, and FIG. 2 is a sectional view taken along the line ■-■ of the ftC1 diagram.
FIG. 3 is a longitudinal sectional view of another embodiment of the disc filter according to the invention, and FIG. 4 is a sectional view of the disc filter of FIG. 3 taken along the line --M. 1.27... Housing, 2.29... Filtration sector, 4.30... Processing agent supply means, 6.31...
Header, 7.32... Distributor, 8...
- Chamber, 9.33... Discharge means, 11, 34... End wall, 12°35... Partition, 13.36...
・Internal space, 15...”!F)', 16... Seal, 17... Hole, 18... Supply passage.

Claims (1)

Claims: 1. A disc filter for separating suspended solids, the housing (1) of which accommodates a filtration sector (2) rotatably from a drive (5);
) and a header (6) for discharging the filtrate from the filtration sector (2) and a filtration section outside the housing (1). a chamber (8) for collecting the filtrate in which a distributor (7) is arranged at the outlet of the liquid and means (9) for conveying the filtrate and discharging it from the filter are arranged;
said housing (1) having an end wall (11) and a partition (12) extending longitudinally and radially to form a separate internal space with said end wall; In the space said filtration sector (2) is arranged held in a housing (1), the housing (1) of the filter having a stationary space for providing sealing and supplying treatment agent to the separate internal space. The stationary means (4) are rotatable on the means (4), for communicating alternatively with the internal space (13) of the housing (1) during rotation of the housing and for collecting the filtrate. including chamber (8);
Each internal space (13) of the housing has a filtration sector (2).
) is in communication with a header (6) for discharging the filtrate mounted on the outer surface (3) of the housing (1). 2. External surface (14) of means (4) for supplying treatment agent
A pad (15) is arranged parallel to its axis, which covers the longitudinal and radial partition (1) of the housing (1).
12) is applied to the pad (15) during rotation of the housing (1).
Disc filter according to claim 1, characterized in that it comprises a seal (16) engageable with the filter. 3. External surface (14) of means (4) for supplying treatment agent
is characterized in that it comprises holes (17) arranged between the pads (15), which holes ensure passage of the treatment agent into the interior space (13) of the housing (1). Disc filter according to scope 2. 4. Disc filter according to claim 1, characterized in that the housing (1) of the filter is mounted in a cantilevered manner on the means (30) for supplying the treatment agent.