CN113663373B - A press filter device for multi-stage filtration serial feeding - Google Patents

Abstract

The invention discloses a filter press device for multi-stage filtration and serial feeding, which belongs to the technical field of resource recovery, and solves the problem in the traditional technology that the same filter cloth with the same specification for the same equipment cannot realize multi-gradient filtration. It includes several Filter plates, inter-plate passages are arranged between the filter plates, a filter cloth is fixedly installed on one side of the filter plates, and a filtrate collecting device is fixedly installed on the side of the filter cloth close to the filter plates, and the filtrate The collecting device is arranged on the side of the filter plate for material filtration, the filtrate collecting device is connected with a filtrate channel, the filtrate channel communicates with the inter-plate channel, and the filtrate channel is arranged at the end of the filter plate , the filtrate channels on each filter plate are arranged alternately up and down, realizing the technical effect of effectively filtering various particles for a long time in the same equipment.

Description

A press filter device for multi-stage filtration serial feeding

technical field

The invention belongs to the technical field of resource recovery, and in particular relates to a pressure filter device for multi-stage filtration and serial feeding.

Background technique

In the process of chemical production, a large amount of exhaust gas will be produced. In the face of increasingly severe environmental problems, exhaust gas treatment has become a problem that many enterprises must face. The current common tail gas treatment process is to absorb the acidic or alkaline components in the tail gas through the spray tower, and at the same time carry the solid particles in the tail gas into the waste liquid generated by the spray. The waste liquid is usually strongly acidic or alkaline, and cannot be directly discharged into external waters, which will cause serious environmental pollution. The current conventional waste liquid treatment method is to use other acidic or alkaline waste residues for neutralization treatment, then use a filter press or other processes to achieve solid-liquid separation, and then discharge the clarified waste liquid out of the factory after natural sedimentation. Realize the harmless treatment of waste liquid. However, this treatment method will cause a waste of resources. The acid-base in the waste liquid can be regenerated after filtration and purification, and returned to a certain production process as a finished product acid-base, or takeaway to realize the recycling of resources. However, there are many kinds of particles and colloids in the waste liquid, and the current filter press mostly adopts parallel feeding and multi-chamber filtration. The filter cloth used by the same equipment is of the same specification, and the filter holes are too fine to be blocked, and the filter holes are too thick to filter fine particles. , so it is difficult to achieve effective filtering.

Therefore, it is necessary to develop a new device that can effectively filter various particles for a long time in the same device.

Contents of the invention

Aiming at the problem in the prior art that multi-gradient filtration cannot be achieved with the same specification of filter cloth that is practical for the same equipment, the present invention provides a filter press device for serial feeding of multi-stage filtration, the purpose of which is to realize multiple Effective filtration of particles for a long time.

The technical scheme that the present invention adopts is as follows:

A filter press device for multi-stage filtration serial feeding, including several filter plates, inter-plate passages are arranged between the filter plates, a filter cloth is fixedly arranged on one side of the filter plates, and the filter cloth is close to One side of the filter plate is fixedly equipped with a filtrate collecting device, and the filtrate collecting device is arranged on the side of the filter plate for material filtration, and the filtrate collecting device is connected with a filtrate channel, and the filtrate channel is connected with the plate The channels communicate with each other, the filtrate channels are arranged at the ends of the filter plates, and the filtrate channels on each filter plate are arranged staggered up and down.

By adopting the above solution, through the staggered assembly of the filtrate channels of the filter plates, the material can flow in an S-shaped route in each filter plate, prolonging the waste liquid filtration path and improving the filtration efficiency.

The filtrate collecting device includes a plate frame, on which several columns are fixedly arranged, one end of the column is in contact with the filter cloth, the other end is connected with a liquid collection chamber, and the side of the liquid collection chamber is connected with a A liquid collection tank, the liquid collection tank is connected with a connecting pipe, and the connecting pipe is connected with a filtrate channel.

The column is arranged at one end close to the filtrate channel.

With the above scheme, it can ensure that the filtrate in the channel between the plates can be fully filtered in the filter cake, and pass into the liquid collection chamber through the column. Through the above structure, the length of the filtration path of the filtrate is increased, and the device’s performance is optimized. filter effect.

The filter holes of the filter cloth are gradually refined in the direction of material flow, wherein the fineness of the filter holes ranges from 1 mm to 1 μm.

Using the above-mentioned scheme, the different particles in the waste liquid are filtered through the filter cloths of different specifications through serial feeding, avoiding the phenomenon that a single filter cloth cannot be completely filtered, or the phenomenon of clogging the filter cloth occurs, and the waste liquid can be guaranteed. Long-term efficient filtration.

The filter plate and filter cloth are treated with corrosion resistance.

The feeding pressure range of the filter plate is between 0.01-10Mpa.

The number of the filter plates is 3-100 pieces.

The filter hole of the filter cloth ranges from 1 mm to 1 μm.

In summary, owing to adopting above-mentioned technical scheme, the beneficial effect of the present invention is:

1. Through the staggered assembly of the filtrate channels of the filter plates, the material can flow in an S-shaped route in each filter plate, prolonging the waste liquid filtration path, and improving the filtration efficiency and effect.

2. Different particles in the waste liquid are graded and filtered through filter cloths of different specifications through serial feeding, which avoids the phenomenon that a single filter cloth cannot be completely filtered or the filter cloth is blocked, and ensures that the waste liquid can be used for a long time Efficient filtration.

3. It can ensure that the filtrate in the channel between the plates can be fully filtered in the filter cake, and pass into the liquid collection chamber through the column. Through the above structure, the length of the filtration path of the filtrate is increased, and the filtration effect of the device is optimized. .

Description of drawings

The invention will be illustrated by way of example with reference to the accompanying drawings, in which:

Fig. 1 is a schematic view of the internal structure in a side view of an embodiment of the present invention;

Fig. 2 is a schematic view of the internal structure of a filter plate from a side view according to an embodiment of the present invention;

Fig. 3 is a schematic diagram of the feeding mode of an embodiment of the present invention;

Fig. 4 is a schematic diagram of the internal structure of a filter plate in a plan view according to an embodiment of the present invention.

Reference signs: 1-plate frame; 2-connecting pipe; 3-collection tank 4-filtrate channel; 5-filter cloth; 6-column; 7-channel between plates; 8-filter plate; 9-collection chamber;

Detailed ways

All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and/or steps.

The present invention will be described in detail below in conjunction with FIG. 1 and FIG. 2 .

Embodiment one:

A filter press device for multi-stage filtration serial feeding, including several filter plates 8, inter-plate passages 7 are arranged between the filter plates 8, and filter cloth 5 is fixedly arranged on one side of the filter plates 8, The side of the filter cloth 5 close to the filter plate 8 is fixed with a filtrate collecting device, the filtrate collecting device is arranged on the side of the filter plate 8 for material filtration, and the filtrate collecting device is connected with a filtrate channel 4 , the filtrate channel 4 communicates with the inter-plate channel 7, the filtrate channel 4 is arranged at the end of the filter plate 8, and the filtrate channels 4 on each filter plate 8 are arranged alternately up and down.

The filtrate collecting device comprises a plate frame 1, on which several columns 6 are fixedly arranged, one end of the column 6 is in contact with the filter cloth 5, and the other end is connected with a liquid collection chamber 9, the liquid collection The side of the chamber 9 is communicated with a sump 3 , and the sump 3 is connected with a connecting pipe 2 connected with a filtrate channel 4 .

The column 6 is arranged at one end close to the filtrate channel 4 .

The filter holes of the filter cloth 5 are gradually refined in the direction of material flow.

The filter plate 8 and the filter cloth 5 are treated with corrosion resistance.

The feeding pressure range of the filter plate 8 is between 0.01-10Mpa.

The number of the filter plates 8 is 3-100 pieces.

The filter hole of the filter cloth 5 ranges from 1 mm to 1 μm.

In the above embodiment, feed is carried out from the upper end of the first filter plate 8, and its position can refer to the feed position in Figure 3, and the material enters the filter cloth 5 of the filter plate 8 from the top to filter, and passes through the filter cloth 5. From the column 6 to the liquid collection chamber 9, where the column 6 is a hollow structure, it is necessary to ensure that the filtrate filtered by the filter cloth 5 can enter the liquid collection chamber 9 from the column 6, and the filtrate entering the liquid collection chamber 9 from the liquid collection tank 3 into the filtrate channel 4, and from the filtrate channel 4 into the inter-plate channel, in the present embodiment, the filtrate channel 4 of the first filter plate 8 is arranged at the low end of the filter plate 8, and the second filter plate 8 The filtrate channel 4 is set on the top accordingly, and the follow-up filter plates 8 are installed sequentially according to the installation positions of the filtrate channels 4 of the first two filter plates 8; after entering the inter-plate channel 7, the material passes through the filter cloth 5 from bottom to top, and from the first The filtrate passages at the top of the two filter plates 8 flow out. Through the above-mentioned embodiment, the S-shaped filtration path of the material can be realized, as shown in Figure 3, wherein the material is passed through from the upper end of the first filter plate 8, and during the extrusion process , the moisture in the material is filtered through the gaps of the filter cake particles, and flows into the liquid collection chamber 9 from the column 6 at the bottom of the first filter plate 8, and flows into the inter-plate channel 7 from the filtrate channel 4, and the inter-plate channel 7 The material in the filter is squeezed, and the filtrate is filtered through the gap between the filter cake particles, and flows into the liquid collection chamber 9 from the column 6 on the top of the second filter plate 8, wherein the column 6 of each filter plate 8 communicates with the filtrate. The pipe 4 and the connecting pipe 2 are arranged staggered up and down, that is, the column 6, the filtrate channel 4 and the connecting pipe 2 of the first filter plate are arranged on the top, and the column 6, the filtrate channel 4 and the connecting pipe 2 of the second filter plate are arranged on the At the bottom, the follow-up filter plate 8 is set and installed according to the rules of the first two filter plates 8. If the column 6 of the first filter plate 8 and the filtrate communication pipe 4 and the connecting pipe 2 are arranged at the bottom, the setting of the follow-up filter plate 8 is also Adaptive adjustments need to be made according to the setting direction of the first filter plate 8 .

Wherein the filtrate collection device is arranged on the side of the filter plate 8 for material filtration, which means that if the filter press is designed for the material to flow from left to right, then the filtrate collection device, including the above-mentioned plate frame 1 and column 6, is set On the left side of the filter plate 8, if the filter press is designed for materials to flow from right to left, the filtrate collecting device is arranged on the right side of the filter plate 8.

In this embodiment, from the feeding position to the filter cloth 5 of the final discharge filter plate 8, the filter fineness gradient increases, that is, the filter cloth 5 of the first filter plate 8 has the thickest pore diameter, and the filter cloth 5 of the last filter plate 8 has the thickest pore size. The pore diameter of the filter cloth 5 of 8 is the smallest, and the range of the pore diameter of the filter cloth 5 is between 1mm-1μm. The staff on site need to adjust the pore diameter of the filter cloth 5 according to the production requirements. Through the above structure, in the process of filtering materials, It can filter from the filter cloth 5 with the coarsest filter pore size to the filter cloth 5 with the finest filter pore size successively, realizing gradient filtration. Here, an example of specific implementation is provided:

Taking the waste acid liquid absorbed by the spray tower as an example, select a filter cloth in the range of 1-100 microns, divide it into 10 grades, a total of 10 filter cloths 5, and fix it on 10 filter plates 8 that are staggered, and use a material delivery pressure of 1MPa Feed to the filter press. During the waste liquid filtration process, the waste liquid is fed from the upper corner of the filter plate 8 and passes through the primary filter cloth 5 to achieve the filtration of coarse particles. The filtrate passes through the liquid collection chamber 9 and flows to the liquid collection tank 3 , through the inter-plate channel 7, enter the second-stage liquid collection chamber 9, and pass through 10 stages of filtration in turn, finally realizing the regeneration of waste liquid.

It should be noted that the filter press and its supporting structure are existing prior art, and will not be described in the present invention.

The above-mentioned embodiments only express the specific implementation manners of the present application, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the protection scope of the present application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the technical solution of the present application, and these all belong to the protection scope of the present application.

Claims (6)

1. A filter press device for multi-stage filtration serial feeding, comprising several filter plates (8), inter-plate passages (7) are arranged between the filter plates (8), and the filter plates (8) A filter cloth (5) is fixedly arranged on one side of the filter cloth (5), and a filtrate collecting device is fixedly arranged on a side of the filter cloth (5) close to the filter plate (8), and the filtrate collecting device is arranged on the On the side of the filter plate (8) where material is filtered, the filtrate collecting device is connected with a filtrate channel (4), the filtrate channel (4) communicates with the inter-plate channel (7), and the filtrate channel (4) arranged at the end of the filter plate (8), the filtrate channels (4) on each filter plate (8) are arranged alternately up and down; The filtrate collecting device includes a plate frame (1), on which several columns (6) are fixed, one end of the column (6) is in contact with the filter cloth (5), and the other end is connected to There is a liquid collection chamber (9), and the side of the liquid collection chamber (9) is connected with a liquid collection tank (3), and the liquid collection tank (3) is connected with a connecting pipe (2), and the connecting pipe (2 ) is connected with a filtrate channel (4); The filter holes of the filter cloth (5) are gradually refined according to the inflow direction of the material. 2 . The filter press device for multi-stage filtration serial feeding according to claim 1 , characterized in that, the column ( 6 ) is arranged at one end close to the filtrate channel ( 4 ). 3 . 3 . The filter press device for multi-stage filtration serial feeding according to claim 1 , characterized in that the filter plate ( 8 ) and filter cloth ( 5 ) are treated with corrosion resistance. 4 . 4. The filter press device for multi-stage filtration serial feeding according to claim 1, characterized in that the feeding pressure range of the filter plate (8) is between 0.01-10 MPa. 5 . The filter press device for multi-stage filtration serial feeding according to claim 1 , characterized in that, the number of the filter plates ( 8 ) is 3-100 pieces. 6 . 6 . The filter press device for multi-stage filtration serial feeding according to claim 1 , characterized in that the filter cloth ( 5 ) has a filter hole range of 1 mm-1 μm. 7 .

Images