CN104906853B

CN104906853B - Multi-channel filter element

Info

Publication number: CN104906853B
Application number: CN201510220502.XA
Authority: CN
Inventors: 高麟; 汪涛; 李翔; 陈慧; 李波
Original assignee: Intermet Technology Chengdu Co Ltd
Current assignee: Intermet Technology Chengdu Co Ltd
Priority date: 2015-05-04
Filing date: 2015-05-04
Publication date: 2020-01-03
Anticipated expiration: 2035-05-04
Also published as: CN104906853A

Abstract

The invention relates to a filtering technology, in particular to a filter element. The invention discloses a multi-channel filter element, wherein at least 2 channels are distributed on the filter element along the axial direction, and the channels are respectively communicated with a filtering object and a cleaning object. The multi-channel filter element of the invention is fully distributed with channels along the axial direction, and the channels are respectively communicated with filtering objects and cleaning objects. When the filtered substance passes through each channel communicated with the filtered substance, the filtered substance permeates into the channels communicated with the cleaned substance around the filtered substance due to the action of pressure difference, and the channels distributed on the periphery of the filter element also permeate the cleaned substance through the side wall of the filter element. As long as the sum of the surface areas of the channels communicated with the filtered substances is larger than or equal to the external surface area of the filter element, the filtering area of the multi-channel filter element is greatly increased, and the filtering efficiency is also greatly improved. For a multi-channel filter element, the number and the size of the channels are reasonably selected, which is a condition which is very easy to meet.

Description

Multi-channel filter element

Technical Field

The invention relates to a filtering technology, in particular to a gas-solid separation technology and a liquid-solid separation technology, and particularly relates to a filter element.

Background

In recent years, honeycomb structure materials have been developed rapidly, and the materials have attracted much attention, mainly the scientific and reasonable structure and the corresponding excellent performances, such as light weight, large specific surface area, large volume, high strength, high honeycomb bearing strength and the like, so that the honeycomb structure materials are typical representatives of the modern bionics principle applied by human beings.

At present, ceramic honeycomb materials and intermetallic compound honeycomb materials are widely applied. The honeycomb ceramics are used for purifying tail gas of small automobiles at first and are widely applied to industries such as chemical industry, electric power, metallurgy, mechanical industry, water treatment and the like nowadays. The honeycomb ceramic is formed into various shapes by countless equal holes, the maximum number of the holes reaches 20-40 per square centimeter at present, the density is 4-6 g per cubic centimeter, and the water absorption rate can reach more than 20% at most. The main products of the honeycomb ceramics comprise dozens of products such as heat storage filler, active carbon, active alumina, molecular sieve, ceramic material balls, catalyst and the like. After the activated carbon powder or particles are made into the shape of honeycomb ceramics, the most widely applied fields are the fields of filtration and purification, such as water purification treatment, wastewater treatment and the like, and particularly, dehydration, decoloration and impurity removal of antibiotics, hormones, vitamins and various injections in the medical industry and the like have been used for the honeycomb ceramics. In recent years, the rapidly developed intermetallic compound honeycomb material has been widely used in the field of filtration technology due to its advantages of high strength, strong toughness, stable pore diameter, corrosion resistance, oxidation resistance, convenience for machining, and the like. The intermetallic compound honeycomb material can be made into filter elements with various shapes and applied to the technical field of gas filtration and liquid filtration.

The prior art filter element structure and the filtering principle are shown in fig. 1 and fig. 2. The shape of the filter element 1 is mostly a cylinder or a prism with a square section, and the filter element 1 shown in fig. 1 is a cylinder. The filter element 1 has axially and uniformly distributed channels a, which are generally distributed throughout the entire filter element in order to increase the filtration flow, as shown in fig. 2. In filtration devices using ceramic or intermetallic filter elements, filtration is usually carried out by means of osmosis, the filtrate (gas or liquid to be filtered) enters the filter element from the inlet end 10 in the axial direction of the filter element and flows out from the outlet end 11 of the filter element 1 through the individual channels a, i.e. the flow direction of the filtrate is shown in the y direction in fig. 1. Due to the effect of the pressure difference, the filtered matter permeates and filters the cleaned matter (filtered clean gas or liquid) layer by layer along the radial direction of the filter element 1, namely the x direction in fig. 1, through the outer surface of the filter element 1. Although the channels a are full of the filter element, the filter substance flows through each channel a, and no pressure difference exists between the adjacent channels, so that the filter element structure cannot well play a role in filtering, and the permeation between the adjacent channels can interfere with each other, so that the filtering effect is greatly reduced. The filter area of such a filter insert is also only the outer surface area of the filter insert, for the diameters shown in fig. 1 and 2

The length of the cylindrical filter element is 1000mm, and the filtering area of the cylindrical filter element is approximately equal to 0.173m²。

Disclosure of Invention

The invention aims to solve the technical problem of providing a multi-channel filter element, wherein at least 2 channels are distributed on the filter element along the axial direction, and the multi-channel filter element is characterized in that the channels are respectively communicated with a filtering object and a cleaning object.

In particular, the channels are evenly distributed along the axial direction.

Specifically, the cross section of the filter element is square or round.

Specifically, the filter element is made of intermetallic compounds.

Specifically, the cross-sectional shape of the channel is square or circular.

Furthermore, the sectional area of the channel for communicating the filtering matter is larger than that of the channel for communicating the cleaning matter.

Furthermore, channels communicated with the filtering objects and the cleaning objects are arranged alternately.

Furthermore, the channels are arranged in a matrix, and the channels communicated with the filtering objects and the channels communicated with the cleaning objects are respectively positioned on different straight lines.

Furthermore, the two ends of the filter element are connected with flow guide structures, and the channel is respectively communicated with the filter and the cleaning object through the flow guide structures.

Furthermore, the flow guide structures connected with the two ends of the filter element have the same structure.

The invention has the advantages that almost half of the channels can be used as filtering channels, thereby greatly increasing the filtering area and greatly improving the filtering efficiency.

Drawings

FIG. 1 is a schematic view of a prior art filter cartridge construction and filtration concept;

FIG. 2 is a top view of the cartridge of FIG. 1;

FIG. 3 is a schematic view of a filter cartridge according to example 1;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a schematic view of example 2;

FIG. 6 is a schematic view of example 3;

FIG. 7 is a schematic view of a flow guide structure matched with the filter element in the embodiment 1;

FIG. 8 is a bottom view of FIG. 7;

FIG. 9 is a top view of FIG. 7;

FIG. 10 is a cross-sectional view taken at P-P of FIG. 9;

fig. 11 is a schematic view of the assembly of a filter cartridge with a flow directing structure.

Detailed Description

The technical solution of the present invention is described in detail below with reference to the accompanying drawings and embodiments.

The multi-channel filter element of the invention is fully distributed with channels along the axial direction, and the channels are respectively communicated with filtering objects and cleaning objects. When the filtered substance passes through each channel communicated with the filtered substance, the filtered substance permeates into the channels communicated with the cleaned substance around the filtered substance due to the action of pressure difference, and the channels distributed on the periphery of the filter element also permeate the cleaned substance through the side wall of the filter element. As long as the sum of the surface areas of the channels communicated with the filtered substances is larger than or equal to the external surface area of the filter element, the filtering area of the multi-channel filter element is greatly increased, and the filtering efficiency is also greatly improved. For a multi-channel filter element, the number and the size of the channels are reasonably selected, which is a condition which is very easy to meet.

Example 1

As shown in fig. 3 and 4, the multi-channel filter element of the present embodiment is made of intermetallic compound materials, the cross section of the filter element 1 is circular, the channels are uniformly distributed along the axial direction and are distributed throughout the whole filter element, and the cross section of the channels is square with the diameter of 3 × 3mm, as shown in fig. 4. The channels are uniformly distributed along the axial direction, more channels can be arranged by fully utilizing the limited space, and the improvement of the filtering efficiency is facilitated. The channels with square cross sections are adopted, so that the surface area of the channels is increased, and the permeability and the filtering effect are improved. In this example, each passage has a cross-sectional area of 9mm²The sizes and the shapes are the same, so that the processing and the forming are convenient, and the processing steps are simplified. Of course, it is also possible to use a channel structure with different cross-sectional areas, and it is generally preferable that the cross-sectional area of the channel for communicating the filtrate is larger than that of the channel for communicating the cleanser. This is primarily based on the filtration needs, since the flow of the filtered material is usually greater than the flow of the cleaned material, and the distribution of the structural channel space is more reasonable.

Referring to fig. 4, the filter element of the present embodiment has 104 passages, wherein 52 passages are communicated with the filtered material, which is indicated by a cross-hatched square a in fig. 4, and the other 52 passages are communicated with the cleaned material, which is indicated by a blank square b in fig. 4, and account for exactly half of the total number of passages. Also in diameter

For example, a cylindrical filter element with the length of 1000mm, the multi-channel filter element of the invention has the filtering area of 52 multiplied by 12 multiplied by 1000 which is 0.624m²Far larger than the filter element with the same size of 0.173m in the prior art²The filtration area is increased by 260%.

As can be seen from FIG. 4, the channels for the filtrate and the cleanser are arranged alternately. The channels are arranged in a matrix, and the channels communicated with the filtered substances and the channels communicated with the cleaned substances are respectively positioned on different straight lines, such as a straight line h and a straight line i in fig. 4. The arrangement mode enables each passage through which the filtered objects pass to be surrounded by the passage communicated with the cleaned objects, and the filtering efficiency of each passage can be fully exerted. And more importantly, in the structure, the channels of the same type, such as the channel a communicated with the filtering object or the channel b communicated with the cleaning object, can be communicated by a straight line, and the channel distribution structure brings great convenience to the design of the flow guide structure, so that the flow guide structure can be greatly simplified for the multi-channel filter element with a more complex structure.

Example 2

As shown in fig. 5, the multi-channel filter element of this embodiment adopts the channels with the circular cross-sectional shape, and the circular channels also have the advantages of increasing the channel surface area and improving the filtering effect similar to the square channels, and also have the characteristic of simple manufacturing process. The multi-channel filter element of the embodiment has 89 channels, wherein 45 channels communicated with filtered substances, namely the channels marked as a, are provided, and the rest 44 channels are marked as b and are communicated with cleaning substances. For other structures such as channel distribution in this example, the description of embodiment 1 can be referred to. This is omitted here.

Example 3

In the multi-channel filter element structure of the embodiment, as shown in fig. 6, the cross section of the filter element is square, and each channel is a circular channel with the same cross section area. As can be seen from fig. 6, 121 channels are axially distributed in the entire filter element 1, 61 channels are communicated with the filtrate, i.e. the channel a, and the other 60 channels are communicated with the cleaner, i.e. the channel b.

It can be seen from the above description of the embodiment that the structural form that the channels are uniformly distributed along the axial direction is adopted, and the channels communicated with the filtering objects and the channels communicated with the cleaning objects are arranged alternately, so that the number of the channels a and the number of the channels b are almost half, and the improvement of the filtering effect is very facilitated.

In the multi-channel filter element, all channels are divided into two types, one type of channel communicated with a filtered object is a channel a, and the other type of channel communicated with a cleaned object is a channel b, so that the channels of the filter element are required to be respectively connected, the corresponding channel a is communicated with the filtered object, and the channel b is communicated with the cleaned object. For some gas filtering devices, the size of a filter element channel is usually not more than a centimeter level, the number of channels in one filter element is usually more than 100, and the filter element channel is divided by adopting a common pipeline, so that the structure is more complicated, and the installation process requirement is higher. The channel distribution structure described in embodiment 1 of the present invention, that is, the channels are arranged in a matrix, and the channels communicating with the filtrate and the channels communicating with the cleaning material are respectively located on different straight lines. The channel distribution structure can adopt a simpler flow guide structure to guide the flow of the filtered objects and the cleaned objects so as to respectively connect the filtered objects and the cleaned objects to different channels.

Fig. 7, 8, 9 and 10 show schematic views of a flow directing structure 100 mated with the multi-channel filter cartridge described in example 1. It can be seen that the flow guide structure 100 is a cylinder having the same shape as the filter element, and has through holes axially distributed therein, the distribution positions of the through holes correspond to the filter element passages, the square through holes with cross lines drawn in fig. 9 correspond to the square passages with cross lines drawn in fig. 4, and the blank square through holes in fig. 9 correspond to the blank square passages in fig. 4. The sidewalls of the flow directing structure 100 are provided with slots 101, as shown in fig. 7. Each slot 101 is communicated with through holes on the same straight line, for example, three through holes on a straight line PP in fig. 9 are communicated with the slot 101, the three through holes are connected with three channels b corresponding to the filter element, which are also marked as b in fig. 9, and the cleaning matters permeated from the three channels b can be led out through the slot 101. It can be seen that the slots 101 can be formed by punching or slotting holes in the sidewalls of the baffle structure 100 along a straight line, which is very convenient to machine. Through holes corresponding to the end face 112 of the flow guide structure 100 and each channel of the filter element are provided with thin tubes 102 matched with the size of the channel, and the thin tubes are communicated with the through holes. At the end face 113 of the flow directing structure 100, all through holes communicating with channel b are closed, leaving only through holes communicating with channel a, as shown in fig. 8. The structure of the flow guide structure 100 and the filter element is shown in fig. 11, and it can be seen that the flow guide structures 100 with the same structure are assembled at both ends of the filter element 1, the end surfaces 112 of the flow guide structures 100 are sleeved at both ends of the filter element, each thin tube 102 is inserted into the corresponding channel, the filtered material enters the filter element from the end surface 113 of the flow guide structure 100, and the filtered clean gas or liquid is led out from the slot 101. As can be seen from fig. 11, the filtering means that the filtering material flows from top to bottom or from bottom to top, and the filtering material flows along the axial direction of the filter element, and the cleaning material flows from the side wall of the filter element is completely compatible with the filtering method of the conventional filtering device, as long as the diameter of the flow guide structure 100 is equal to that of the conventional filter element and the overall length L is the same as that of the conventional filter element, the filter element in the conventional filtering device is changed into the filter element structure shown in fig. 11, and the other parts of the filtering device can be updated without any change. According to the technical scheme, the filtering efficiency can be greatly improved without excessively modifying the conventional device, and the filtering device has a popularization value.

Claims

1. The multi-channel filter element is characterized in that the channels are respectively communicated with a filtering object and a cleaning object, the channels communicated with the filtering object and the channels communicated with the cleaning object are arranged alternately, the channels communicated with the filtering object and the channels communicated with the cleaning object are respectively positioned on different straight lines, two ends of the filter element are connected with flow guide structures, and the channels are respectively communicated with the filtering object and the cleaning object through the flow guide structures;

the water conservancy diversion structure is the same with the filter core shape, assembles at the filter core both ends, water conservancy diversion structure axial distribution has the through-hole, the through-hole distribution position is corresponding with the filter core passageway, the through-hole is provided with the tubule that matches with filter core passageway size, the tubule inserts in the filter core passageway that corresponds, water conservancy diversion structure lateral wall sets up the fluting, and every fluting communicates with the through-hole that is in the clean thing of intercommunication on the same straight line, and at water conservancy diversion structure terminal surface, the passageway of the clean thing of intercommunication is all sealed.

2. The multi-channel filter cartridge of claim 1, wherein the channels are evenly distributed along the axial direction.

3. The multi-channel filter cartridge of claim 1, wherein the filter cartridge cross-sectional shape is square or circular.

4. The multi-channel filter cartridge of claim 1, wherein the filter cartridge is constructed of an intermetallic compound.

5. The multi-channel filter cartridge of claim 1, wherein the channel cross-sectional shape is a square or a circle.

6. The multi-channel filter cartridge of claim 5, wherein the cross-sectional area of the channels communicating with the filtrate is greater than the cross-sectional area of the channels communicating with the purge.

7. The multi-channel filter cartridge of claim 1, wherein the flow directing structures attached to both ends of the filter cartridge have the same configuration.