CN202497793U

CN202497793U - Double-channel long service life filter

Info

Publication number: CN202497793U
Application number: CN201220139109XU
Authority: CN
Inventors: 赵玉海
Original assignee: NANJING KELANG ANALYTICAL INSTRUMENT CO Ltd
Current assignee: NANJING KELANG ANALYTICAL INSTRUMENT CO Ltd
Priority date: 2012-03-30
Filing date: 2012-03-30
Publication date: 2012-10-24
Anticipated expiration: 2022-03-30

Abstract

The utility model relates to a double-channel long service life filter. The double-channel long service life filter is characterized in that the double-channel long service life filter comprises two filter inner cores, a filter external cavity and a heating temperature control device; the filter external cavity is sheathed outside the filter inner cores; the heating temperature control device is arranged outside the filter external cavity; two layers of filtration mesh screens and filter sample gas tubes are arranged in each filter inner core, wherein the filter sample gas tubes are penetrated through and connected with the four layers of filtration mesh screens; the two filter inner cores are separated by using clapboards; and sample gas outlet holes are also arranged on the filter external cavity. The double-channel long service life filter solves the current situation that the traditional domestic and abroad gas sampling analysis filter is easily blocked; and the double-channel long service life filter has the characteristics of long service life, wide application prospect, wide application scope and suitability for large dust.

Description

Binary channels long-life filter

Technical field

The utility model relates to a kind of filter, especially suits at gas analysis system in sampling process, specifically is to be a kind of filter of using in the high dust sampling process.

Background technology

At present; The analytical system of using at home mainly is made up of sampling pretreatment unit, smart filter element, demarcation unit, analytic unit; And smart filter element, demarcate flow process and the configuration that all there be standard unit, analytic unit; But can they normally use, and depends on that then can the sampling pretreatment unit normally move.As everyone knows, sampling unit mainly is made up of sampling pipeline and filter, therefore, and the quality that filter uses, the normal operation that the length in life-span all has influence on whole system.Thus, filter is the core component of analytical system.But the filter of domestic use, because in the big place of dustiness, because of technological requirement; The precision of filter and area are difficult to adapt to the requirement of Chalk-dust filtering amount, and dust gets into filter simultaneously, the meeting blocking surface; And between the filter gap, form and harden, influence the service life of filter.

The utility model content

The purpose of the utility model is the deficiency that exists to above-mentioned prior art, provides a kind of and can use nonclogging binary channels long-life filter for a long time.

The technical scheme of the utility model is:

A kind of binary channels long-life filter; It is characterized in that it comprises two filter kernels, filter exocoel and heating temperature control device; The filter exocoel is sleeved on filter kernel outside, is provided with the heating temperature control device in filter exocoel outside, is provided with two-layer filtration mesh screen in each filter kernel and runs through to connect four layers of filter appearance tracheae that filters mesh screen; There is dividing plate to separate between two filter kernels, also is provided with out a kind pore on the filter exocoel.

Be covered with square or irregular shape standard quartz sand between the two-layer filtration mesh screen of said two filter kernels.

Said filter kernel is outside equipped with the screen filtration tube, and its material adopts stainless steel, and its filtering accuracy is 2u-5u.

Said four layers of filtration mesh screen are the stainless steel screen pack.

The beneficial effect of the utility model:

The utility model has solved the susceptible to plugging present situation of gas sampling analysis and filter device at present both at home and abroad, have application prospect wide, use face width, be suitable for the big characteristic of dust, be applicable to that gas analysis system adopts process, especially is applied in the high dust sampling process.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the application sketch map of the utility model.

Among the figure: 1, stainless steel screen pack, 2, the stainless steel screen pack, 3, the stainless steel screen pack, 4, the stainless steel screen pack, 5, dividing plate; 6, filter appearance tracheae, 7, the screen filtration tube, 8, the import of appearance gas, 9, the outlet of appearance gas; 10, appearance gas import, 11, the outlet of appearance gas, 12, the filter inner chamber, 13, the filter exocoel; 14, heating temperature control device, 15, kernel appearance gas connecting hole, 16, flue, 17, the utility model device; 18, analysis meter, 19, analyze magnetic valve, 20, the blowback magnetic valve, 21, the blowback source of the gas.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Like Fig. 1, shown in 2.

A kind of binary channels long-life filter; Comprise two filter kernels, filter exocoel 13 and heating temperature control device 14; Filter exocoel 13 is sleeved on filter kernel outside, and filter exocoel 13 outsides are provided with heating temperature control device 14, is provided with two-layer filtration mesh screen in each filter kernel and runs through to connect four layers of filter appearance tracheae 6 that filters mesh screen; There is dividing plate 5 to separate between two filter kernels, also is provided with out kind pore 9 on the filter exocoel 14.Be covered with square or irregular shape standard quartz sand between the two-layer filtration mesh screen of said two filter kernels, the granularity of quartz sand can be 1mm.Said filter kernel is outside equipped with the screen filtration tube, and its material adopts stainless steel, and its filtering accuracy is 2u-5u.Said four layers of filtration mesh screen are the stainless steel screen pack.

During sampling; Analyze magnetic valve 19 and open, blowback magnetic valve 20 cuts out, and gathers appearance gas through sampling pipe; Gas gets into through filter appearance tracheae 6; Filter a part of big dust particle through filter screen 1 and 3 respectively again, get into A and B layer subsequently respectively and filter, accomplish the above dust-filtering of 40u through

filter screen

2 and 4 at last.Because the effect in irregular gap can be filtered 60% the above dust of 10u in the quartz sand of A, B layer.

When gas passes through screen filtration tube 7 again behind

filter screen

2 and 4 process kernel appearance gas connecting holes 15; Screen filtration tube 7 can be the stainless steel mesh about 5u; It can make the above dust of 5u rest on the surface of screen filtration tube 7; Last clean gas comes out from screen filtration tube 7 to show kind gas analysis results by analysis meter 18 at last after arrives and analyze magnetic valve 19 by going out kind pore 9.

When the utility model being carried out the blowback cleaning; The blowback air stream is just in time opposite, and analyze magnetic valve 19 and close this moment, and air blowing magnetic valve 20 is opened; Blowback air enters into screen filtration tube 7 by going out kind pore 9; Arrive

filter screen

2 and 4 through kernel appearance gas connecting hole 15 again, through arriving filter screen 1 and 3 behind A, the B layer quartz sand, last blowback air enters into filter appearance tracheae 6 and is discharged by sample introduction pore 8.Because the blowback air flow is big, adopt constant temperature pulse gas mode to purge and cause the dust that holds of each filter to turn back to sampling conduit by former road, the constant temperature pulse backblowing has reached the purpose from deashing.

The utility model gave the filter exocoel 13 heated at constant temperature through heating temperature control device 14, because the conduction of heat makes kind gas in filter, be in heated condition; Heating generally makes it to be controlled on the dew point 30 ℃, has avoided appearance gas to get into a filter like this, through heating the heat fade of having offset appearance gas; Avoided the possibility of dust in the filter surfaces fouling, promptly no matter when being the sample circuit blowback, filter is in drying regime for a long time; Filter can not stop up simultaneously, can not corrode non flouling behaviour; Having from the deashing function, is the extremely wide filter of a kind of application surface.

The undeclared part of other that relates in the utility model all adopts prior art to realize.

Claims

1. binary channels long-life filter; It is characterized in that it comprises two filter kernels, filter exocoel and heating temperature control device; The filter exocoel is sleeved on filter kernel outside, is provided with the heating temperature control device in filter exocoel outside, is provided with two-layer filtration mesh screen in each filter kernel and runs through to connect four layers of filter appearance tracheae that filters mesh screen; There is dividing plate to separate between two filter kernels, also is provided with out a kind pore on the filter exocoel.

2. binary channels long-life filter according to claim 1 is characterized in that being covered with square or irregular shape standard quartz sand between the two-layer filtration mesh screen of said two filter kernels.

3. binary channels long-life filter according to claim 1 is characterized in that said filter kernel is outside equipped with the screen filtration tube, and its material adopts stainless steel, and its filtering accuracy is 2u-5u.

4. binary channels long-life filter according to claim 3 is characterized in that said four layers of filtration mesh screen are the stainless steel screen pack.