CN101069797B - Fire-retardant filter - Google Patents
Fire-retardant filter Download PDFInfo
- Publication number
- CN101069797B CN101069797B CN2007100649163A CN200710064916A CN101069797B CN 101069797 B CN101069797 B CN 101069797B CN 2007100649163 A CN2007100649163 A CN 2007100649163A CN 200710064916 A CN200710064916 A CN 200710064916A CN 101069797 B CN101069797 B CN 101069797B
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- Prior art keywords
- filter
- housing
- fire
- filter course
- retardant
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Abstract
The present invention discloses a fire-resisting filter. It includes the following several portions: shell body, gas inlet set on the shell body, gas outlet set on the shell body for conveying the gas passed through the described filtering layer, flange cover seal-connected with the described shell body opening and filtering layer unit which is mounted in the interior of said shell body and uses glass fiber as filtering material.
Description
Technical field
The present invention relates to a kind of pneumatic filter, particularly a kind of fire-retardant filter that filters the formaldehyde unstripped gas.
Background technology
In Formaldehyde Production, adopt filter that unstripped gas is carried out purified treatment and can reduce in the unstripped gas objectionable impurities and bring system into, keep the activity of silver catalyst, improve the formaldehyde conversion ratio.
Fig. 1 has shown the structure of existing fire-retardant filter, and in the drawings, label 111 is represented vessel flange; 112 representatives are taken over; 113 represent vessel flange; 114 represent hanger; 115 represent vessel flange; 116 represent filter course; 117 represent vessel flange.As can be seen from Figure 1, the filter course 116 of filter is arranged on the middle part of filter, and filter one side links to each other with pipeline by vessel flange 111, and opposite side passes through vessel flange 117 and links to each other with pipeline, and two sections of filter are tightly connected by vessel flange 115.Because the two ends and the pipeline of filter are fixed, therefore when changing filter medium, need open flange 115, to get into filter course 116 the insides by the operator then and go to change, operation is very inconvenient.
In addition, filter course selects for use the mineral wool of similar insulation usefulness as filter medium, causes filter quality poor, influences activity of such catalysts; In addition, carefully also can not cause filter effect relatively poor owing to manually mat formation, impurity is brought catalyst layer into, makes catalyst poisoning, causes production capacity to descend.Simultaneously, the SR of this fire-retardant filter is also bigger, and at the driving initial stage, the resistance that this filter produces is about 100mmH20, and resistance strengthens with the prolongation of production cycle, and (ordinary circumstance will be changed in maximum 2 months) reaches 2000mmH final period
2About O, cause output to descend, pure content reaches 3% in the finished product.
Summary of the invention
The purpose of this invention is to provide a kind of fire-retardant filter of being convenient to change filter medium and improving filter effect.
Above-mentioned purpose of the present invention is achieved in that a kind of fire-retardant filter, comprising:
Housing;
Be opened in the air inlet on the housing;
Be opened in the gas outlet that is used on the housing carry through the gas of described filter course;
The blind flange of shell nozzle is tightly connected; And:
Be installed in the housing is the filter course of filter material with the glass fibre;
Because the opening that housing is offered is exclusively used in the replacing filter medium, and shell nozzle is provided with up, therefore when changing filter medium, only need unload blind flange, get final product from last taking-up filter course, thereby the operating personnel that need that overcome prior art creep into the defective of changing filter course in the fire-retardant filter.
Wherein, described filter course unit comprises: framework; Be tiled in the several layers glass fibre in the described framework; Every layer ventilative dividing plate separating described several layers glass fibre.
Wherein, described framework is the container of being made by stainless steel, and described dividing plate is the ventilative dividing plate of being made by aluminium alloy.
In the structure of above-mentioned filter element, glass fibre is a filter material, when dust particle when the filter material, stopped by glass fibre greater than the particle of distance between filter material fiber and the fiber, realize filtration to dust; For the less micronic dust of particle diameter, owing to reasons such as Brownian movement, gravity, ionizations, pass through in the fiber surface friction, electrostatic interaction takes place in this moment, and dust promptly can be attached to the capture effect that reaches on the fiber, thereby realizes the seizure to micronic dust; Can also utilize principle of inertia to realize filtering in addition, that is: when air flowed between the filter material fiber, because of the effect of inertia that flows of particle, quick-blow was adhered in fiber surface.
As selection, described filter course can also be the monoblock type filter course that is made of the several layers glass fibre that ventilative dividing plate is separated.
In addition, described filter course unit presses that N is capable, the M column distribution, and to form filter course, wherein N and M are the positive integer more than or equal to 2.In one embodiment, N is 2, and M is 3.
Because filter course is made of the filter course unit that separates, therefore can saves the efficient of changing filter medium, and improve replacing speed and saved operating personnel's muscle power.
In addition, each filter course unit is supported by the gripper shoe that connects housing, and is fixed together with gripper shoe by pressing plate and bolt, that is to say, by the bolt connection, the filter course unit is clamped between pressing plate and the gripper shoe.
In addition, between described air inlet and described filter course, be provided with baffle plate.This baffle plate is a stainless steel flat plate, its effect is: when dust-contained airflow and baffle plate met, airflow direction can sharply change, and particle can not change direction with air-flow equally because of the inertia force effect, particle has lost kinetic energy in gravity effect sedimentation with the baffle plate collision, thereby is removed.
One end of above-mentioned baffle plate welds described housing, and its other end welds an end of described gripper shoe, and the axis of described baffle plate and described air inlet forms the angle less than 90 degree.
Wherein, distribute on the described gripper shoe and be suitable for installing some through holes of filter course unit, described through hole is a square through-hole.
Wherein, described blind flange is fastened on the lined flange at shell nozzle edge by bolt, seals described shell nozzle.
Wherein said blind flange is square blind flange, and described lined flange is square lined flange.
Compared to prior art, the present invention has the following advantages:
1, can change filter medium quickly and easily;
2, improve filter effect, promptly can filter 0.3 μ m dust granules more than 99.7%, thereby guaranteed the purity of unstripped gas;
3, can make the catalyst long period guarantee fine activity.
The present invention is described in detail below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the schematic diagram of the fire-retardant filter of prior art;
Fig. 2 shows the integrally-built schematic diagram of fire-retardant filter of the present invention;
Fig. 3 has shown the structure of gripper shoe among Fig. 2;
Fig. 4 has shown the structure of filter course unit among Fig. 2.
Description of reference numerals: 1-air inlet; The 2-baffle plate; The 3-lined flange; The 4-blind flange; The 5-pressing plate; 6-filter course unit; The 7-gas outlet; The 8-gripper shoe; The 9-base plate; 1 0-housing; 11-stainless steel frame 11; 1 2-is as the glass fibre of filtrate; 13-aluminium alloy dividing plate.
The specific embodiment
Referring to the structure of fire-retardant filter of the present invention shown in Figure 2, fire-retardant filter of the present invention comprises:
Housing 10, the housing 10 shown in the figure is a square, but housing 10 also can be other shape;
Be opened in the air inlet 1 on the housing 10, this air inlet 1 is used to import the formaldehyde gas from the outside;
Be installed in the filter course (showing as 6 filter course unit 6 of 2 row, 3 row in the drawings) in the housing, be used for filtering dust granules from the formaldehyde gas of outside input;
Be opened in the gas outlet 7 that is used on the housing 10 carry through the gas of described filter course;
The invention is characterized in also and comprise:
The blind flange 4 that is tightly connected with housing 10 openings.Because the opening that housing 10 is offered is exclusively used in the replacing filter medium, and shell nozzle is provided with up, therefore when changing filter medium, only need unload blind flange 4, get final product from last taking-up filter course, thereby the operating personnel that need that overcome prior art creep into the defective of changing filter course in the fire-retardant filter.
Described filter course is capable by N, the filter course unit 6 of the separation of M row constitutes, and wherein N and M are the positive integer more than or equal to 1.In one embodiment, N is 2, and M is 3.
Because filter course is made of the filter course unit 6 that separates, therefore can saves the efficient of changing filter medium, and improve replacing speed and saved operating personnel's muscle power.
Between described air inlet 1 and described filter course, be provided with baffle plate 2.This baffle plate 2 is a stainless steel flat plate, its effect is: when dust-contained airflow and baffle plate 2 met, airflow direction can sharply change, and particle can not change direction with air-flow equally because of the inertia force effect, particle has lost kinetic energy in gravity effect sedimentation with baffle plate 2 collisions, thereby is removed.)
One end of above-mentioned baffle plate 2 welds described housing 10, and its other end welds an end of described gripper shoe 8, and the axis of described baffle plate 2 and described air inlet 1 forms the angles less than 90 degree.
When housing 10 was the square housing, blind flange 4 was square blind flange, and described lined flange 3 is square lined flange.
In Fig. 1, square flange lid 4 is fastened on the lined flange 3 of housing 10 edge of opening by bolt, seals the opening of described housing 10.
Fig. 3 has shown the structure of gripper shoe 8, as shown in the figure, distributes on the gripper shoe 8 and is suitable for installing some through holes of filter course unit 6, has 6 square through-holes that are suitable for installing filter course unit 6 in the drawings.The length of side of this square through-hole is less than the length of side of square filtering layer unit 6 shown in Figure 1, thereby makes filter course unit 6 mounted thereto.
Fig. 4 has shown the structure of filter course of the present invention unit 6, and as we can see from the figure, described filter course unit 6 comprises: framework 11; Be tiled in the several layers glass fibre 12 in the described framework 11; Every layer ventilative dividing plate 13 separating described several layers glass fibre 12.
Wherein, described framework 11 is containers of being made by stainless steel, and described dividing plate 13 is ventilative dividing plates of being made by aluminium alloy.
In the structure of above-mentioned filter course unit 6, glass fibre 12 is filter materials, when dust particle when the filter material, stopped by glass fibre 12 greater than the particle of distance between filter material fiber and the fiber, realize filtration to dust; For the less micronic dust of particle diameter, owing to reasons such as Brownian movement, gravity, ionizations, pass through in the fiber surface friction, electrostatic interaction takes place in this moment, and dust promptly can be attached to the capture effect that reaches on the fiber, thereby realizes the seizure to micronic dust; Can also utilize principle of inertia to realize filtering in addition, that is: when air flowed between the filter material fiber, because of the effect of inertia that flows of particle, quick-blow was adhered in fiber surface.
As selection, described filter course can also be the monoblock type filter course that is made of the several layers glass fibre 12 that ventilative dividing plate 13 is separated.
In addition, each filter course unit 6 is supported by the gripper shoe 8 that connects housing 10, and is fixed together with gripper shoe 8 by pressing plate 5 and bolt, that is to say, by the bolt connection, filter course unit 6 is clamped between pressing plate 5 and the gripper shoe 8.
Dotted line among Fig. 2 has shown the flow direction of gas, the quaternary gaseous mixture enters in the filter from air inlet 1, by baffle plate 2, (principle is, when dust-contained airflow and baffle plate meet to remove big dust granules and liquid pearl, airflow direction sharply changes, and particle can not change direction with air-flow equally because of the inertia force effect, and particle has lost kinetic energy in gravity effect sedimentation with the baffle plate collision, thereby is removed)), enter into filter course 6 then, enter in the spark arrester from the gas outlet 7 of opening on housing 10 at last.
In one embodiment, 6 filter course unit 6 are placed on the gripper shoe 8, gripper shoe 8 one ends link to each other with housing 10 by welding, one end links to each other with baffle plate 6 by welding, gripper shoe is a stainless steel flat plate, have the square hole of 6 590mm * 590mm thereon, so that filter course unit 6 is installed.Blind flange 4 seals filter by lined flange 3.When needs are changed filter medium, only need unload the square flange lid, take out filter course 6 and just can.
Fire-retardant filter of the present invention can be realized: 150 ℃ of heatproofs; 0.3 the impurity of μ m is trapped in more than 99.7% on the filter material, 25mmH falls in initial pressure
2O; Final value 50mmH
2O.Filter effect has guaranteed the purity of unstripped gas efficiently.Make catalyst the long period guarantee good active, pure content＜1% in the finished product, normal condition was changed filter medium in 4 months.
Claims (8)
1. fire-retardant filter that filters the formaldehyde unstripped gas comprises:
Housing (10);
Being opened in being used on the housing (10) imports air inlet (1) from the formaldehyde gas of outside;
Be installed in interior being used for of housing and filter the filter course of the dust granules of the formaldehyde gas of importing from the outside;
Be opened in the gas outlet (7) that is used on the housing (10) carry through the gas of described filter course;
Be exclusively used in housing (10) opening that is provided with of changing filter course unit (6) up;
The blind flange (4) of described housing (10) opening is tightly connected;
Wherein filter course is made of the filter course unit (6) that separates, and filter course unit (6) are filter material with the several layers glass fibre (12) that is used for filtering dust particle;
Wherein said filter course unit (6) presses that N is capable, the M column distribution, and described N and M are the positive integer more than or equal to 2.
2. fire-retardant filter according to claim 1, wherein, described filter course unit (6) comprising:
Framework (11);
Be tiled in the several layers glass fibre (12) in the described framework (11); And
Every layer ventilative dividing plate (13) separating described several layers glass fibre (12).
3. fire-retardant filter according to claim 2, wherein, described filter course unit (6) is supported by the gripper shoe (8) that connects housing (10), and is fixed together by pressing plate (5) and bolt and gripper shoe (8).
4. fire-retardant filter according to claim 3 wherein, is provided with the baffle plate (2) that is used for removing the particle in the dust-contained airflow between described air inlet (1) and described filter course.
5. fire-retardant filter according to claim 4, wherein, one end of described baffle plate (2) welds described housing (10), and its other end welds an end of described gripper shoe (8), and the axis of described baffle plate (2) and described air inlet (1) forms the angles less than 90 degree.
6. fire-retardant filter according to claim 4, wherein, described gripper shoe (8) goes up to distribute and is suitable for installing the through hole of filter course unit (6).
7. fire-retardant filter according to claim 6, wherein, the through hole on the described gripper shoe (8) is a square hole.
8. fire-retardant filter according to claim 1, wherein, described blind flange (4) is fastened on the lined flange (3) of housing (10) edge of opening by bolt, seals described housing (10) opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100649163A CN101069797B (en) | 2007-03-29 | 2007-03-29 | Fire-retardant filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100649163A CN101069797B (en) | 2007-03-29 | 2007-03-29 | Fire-retardant filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101069797A CN101069797A (en) | 2007-11-14 |
| CN101069797B true CN101069797B (en) | 2010-07-14 |
Family
ID=38897312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100649163A Expired - Fee Related CN101069797B (en) | 2007-03-29 | 2007-03-29 | Fire-retardant filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101069797B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103585826B (en) * | 2013-10-14 | 2015-11-18 | 东莞市酷柏电子设备有限公司 | A kind of spark and dust-filtering machine |
| CN113318531A (en) * | 2021-06-21 | 2021-08-31 | 美埃(中国)环境科技股份有限公司 | Miniature pipeline filter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3757499A (en) * | 1971-11-04 | 1973-09-11 | Hepa Corp | Stiffened absolute filter pack |
| US6644961B2 (en) * | 2001-03-27 | 2003-11-11 | The Protectoseal Company | Flame arrestor with reflection suppressor |
| CN2800011Y (en) * | 2005-04-19 | 2006-07-26 | 黄定山 | Explosion-proof flame-arresting breather valve |
-
2007
- 2007-03-29 CN CN2007100649163A patent/CN101069797B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3757499A (en) * | 1971-11-04 | 1973-09-11 | Hepa Corp | Stiffened absolute filter pack |
| US6644961B2 (en) * | 2001-03-27 | 2003-11-11 | The Protectoseal Company | Flame arrestor with reflection suppressor |
| CN2800011Y (en) * | 2005-04-19 | 2006-07-26 | 黄定山 | Explosion-proof flame-arresting breather valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101069797A (en) | 2007-11-14 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100714 Termination date: 20170329 |