CN102068866A - Method for manufacturing polyethylene microporous filter tube for secondary filtering of compressed air - Google Patents
Method for manufacturing polyethylene microporous filter tube for secondary filtering of compressed air Download PDFInfo
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- CN102068866A CN102068866A CN 201010270408 CN201010270408A CN102068866A CN 102068866 A CN102068866 A CN 102068866A CN 201010270408 CN201010270408 CN 201010270408 CN 201010270408 A CN201010270408 A CN 201010270408A CN 102068866 A CN102068866 A CN 102068866A
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Abstract
The invention a method for manufacturing a polyethylene microporous filter tube for secondary filtering of compressed air, which comprises the steps of: A, sieving polyethylene powder with a sieving machine; B, coating silicone oil on the inner wall of an external iron tube mould and the outer wall of an internal iron tube mould for reverse mould sintering and assembling a mould body; C, pouring siftage sieved by the sieving machine between the inner wall of the external iron tube mould and the outer wall of the internal iron tube mould; D, placing the mould body in a constant temperature furnace, sintering for 5-6 hours at 250-300 DEG C; and E, cooling the mould body to room temperature and de-moulding. As a novel filtering medium, the polyethylene microporous filter tube manufactured by novel materials, with novel technology and processes, has high and stable filtering precision, long service life and easy cleaning and is non-toxic, corrosion resisting, temperature resisting at 90 DEG C and can be recycled repeatedly and is an ideal material for various industries to implement high precision gas-solid separation and oil-gas separation. In the manufacturing process, the filter core is only sintered to form at one time, thereby reducing the cumbersome multi-step manufacturing means and saving the labor.
Description
Technical field
The present invention relates to the compressed air secondary filter, specifically is the production method of compressed air secondary filter with the polyethylene micropore screen pipe.
Background technology
Compressed air is the main source of the gas of large-scale industrial production, in compressed air purification system, adopts accurate filter to filter, and reaches the highest purification level of free from foreign meter, oily, water, peculiar smell, is the solution that reduces cost and increase the benefit.
The filter element of domestic market production at present, all adopt the multiple filter material of multilayer to make, primary structure is: ectonexine wire netting support therebetween glass paper outsourcing sponge (marine alga cotton wool felt), in use, causing (1) glass paper to meet water easily swells, influence the aperture, cause the filtering accuracy instability, increase pressure reduction; (2) sponge (marine alga cotton wool felt) of outer parcel is subjected to come off after the corruption, pollutes downstream line; (3) producer that has does inside and outside support in order to reduce cost with the iron net, causes getting rusty, and produces rust water, influences depuration quality; (4) adopt the filter type with too many people coming in and going out, impurity is piled up at in-core and is stopped up, and easy cleaning not after the obstruction uses certain hour and will change supersededly, can not use repeatedly, and service life is short, causes the wasting of resources.
On manufacture craft, because every layer of filtering material difference, filter core can not one-shot forming, needs the manufacturing process of multiple working procedure just can finish, and increases labor cost.
Summary of the invention
The purpose of this invention is to provide the production method of compressed air secondary filter with the polyethylene micropore screen pipe.The screen pipe intensity height of this method gained is used for the compressed air secondary filter, and is effective, and regeneration easily.
Method of the present invention has the following steps:
A, polyethylene powder is sieved with sieving machine,
B, be coated with silicone oil at the outer iron pipe mould inwall of reverse mould sintering, interior iron pipe mould outer wall, and the assembling die body,
C, the screenings after getting sieving machine and sieving pour between the outer iron pipe mould inwall and interior iron pipe mould outer wall of die body,
D, put die body into constant temperature oven, 250 ~ 300 ℃ of sintering 5 ~ 6 hours,
E, die body are come out of the stove and are cooled to the demoulding after the room temperature.
The present invention selects for use molecular weight to be in order to improve the intensity of product: the polyethylene powder of 3,000,000 units ~ 4,800,000 units is as raw material.
In order to guarantee the wall thickness of screen pipe, during the assembling die body, the spacing between outer iron pipe mould inwall and the interior iron pipe mould outer wall is 8 ~ 10mm.
In order to improve the product homogeneity, guarantee product quality, in described compressed air secondary filter production method, when carrying out above-mentioned C step operation, pour into while vibrating, thereby make polyethylene powder uniformity in die body with the polyethylene micropore screen pipe.
Among the present invention, polyethylene powder was sieved with sieving machine, free from foreign meter to guarantee the powder cleaning, the powder that sieved is poured in the circular iron pipe mould (die body), put constant temperature oven into and come out of the stove, the demoulding one-shot forming of cooling back through 5 ~ 6 hours, 250 ~ 300 ℃ high temperature sinterings.
During the reverse mould sintering in the outer iron pipe mould, interior iron pipe mould has been coated with silicone oil outward, filling makes powder even while vibrate during the powder filling material, need not airtight secluding air, clean but the operating room must keep.Pipe die all has been coated with silicone oil, and the filter core inside and outside wall that sintering comes out will be as smooth as jade.Outer wall is as smooth as jade, oil, impurity are difficult for attached to inside and outside wall, part is attached to the dust impurity of inside and outside wall, only need working pressure gas to blow (from inside to outside or from outside to inside) facing to filter core, impurity attached to inside and outside wall is easy to remove clean, like this, the filter core use of regenerating again increases the service life.
Make the polyethylene micropore screen pipe filter core of producing with new material, new technology, new technology invention, reach China and create in the innovation in this field.
The polyethylene micropore screen pipe claims (pipe that can breathe) again, make the polyethylene screen pipe filter core of producing with brand-new technology invention, the manufacture craft of the filter core filter medium structure (ectonexine wire netting support+therebetween glass paper+outsourcing sponge, marine alga cotton wool felt) of domestic production has at present been carried out overthrowing completely and revolution, reached national energy and substituted strategic transformation and purpose, made this invention become China and create.
The polyethylene micropore screen pipe filter core that the present invention produces has following remarkable result:
(1) the polyethylene micropore screen pipe filter core moulding of producing once need not inside and outside support wire netting, and outer wall is bright and clean as beautiful, is difficult for adhering to profit, and oil gas separation is fairly obvious;
(2) acid and alkali resistance, oil, salt and most of organic solution, 90 ℃ of heatproofs, excellent in cushion effect, be difficult for deformed damaged;
(3) filtering accuracy height, the aperture is stable, has avoided the chance water glass paper varying aperture of swelling to produce pressure reduction.
(4) if adopt during actual the use gas outward advance in go out that (gas is entered by the outer surface of screen pipe, through the wall of screen pipe and by the micro porous filtration on the wall, clean gas is flowed out by the center-aisle of screen pipe) filter type, filter effect is better, but need not the dismounting blowback cleans, repeated regeneration uses, and prolong service life.
Make the polyethylene micropore pipe filter core of producing with brand-new material, brand new technical, brand-new technology, as novel filter medium, have the filtering accuracy height, filtering accuracy is stable, avirulence, corrosion-resistant, 90 ℃ of heatproofs, long service life, easy cleaning, iterative regenerable uses.It is the desirable material that every profession and trade realizes high accuracy gas solid separation, Oil-gas Separation.
Aspect manufacture craft, filter core is made only needs once sintered moulding, in manufacturing process, reduces loaded down with trivial details multiple working procedure manufacturing process, reduces the labour.
Polyethylene micropore screen pipe material light specific gravity, therefore easy for installation, but machining sawtooth, file, plane, boiling hot, welding, polyethylene micropore screen pipe filter core need not inside and outside support wire netting, need not outsourcing sponge (felt), the centre need not to use glass paper, is the desirable material that realizes high accuracy gas solid separation, Oil-gas Separation, the compressed air accurate filter of the supporting domestic and international different size of energy, different model.
The specific embodiment
Select for use molecular weight to be: the polyethylene powder of 4,000,000 units is as raw material.
A, polyethylene powder is sieved with sieving machine.
B, die body length are 1m, and outer iron pipe mould internal diameter 50mm is coated with silicone oil at the outer iron pipe mould inwall of reverse mould sintering, interior iron pipe mould outer wall, and the assembling die body, and the spacing between outer iron pipe mould inwall and the interior iron pipe mould outer wall is 9mm.
C, the screenings after getting sieving machine and sieving pour between the outer iron pipe mould inwall and interior iron pipe mould outer wall of die body, pour into while vibrating.
D, put die body into constant temperature oven, 280 ℃ of sintering 6 hours.
E, die body are come out of the stove and are cooled to the demoulding after the room temperature.
The screen pipe product of gained, chimney filter length are 1m, and the chimney filter outside dimension is 50mm, wall thickness 9mm, aperture 40-50 μ m of chimney filter wall micropore.
Claims (4)
1. the compressed air secondary filter has the following steps with the production method of polyethylene micropore screen pipe:
A, polyethylene powder is sieved with sieving machine,
B, be coated with silicone oil at the outer iron pipe mould inwall of reverse mould sintering, interior iron pipe mould outer wall, and the assembling die body,
C, the screenings after getting sieving machine and sieving pour between the outer iron pipe mould inwall and interior iron pipe mould outer wall of die body,
D, put die body into constant temperature oven, 250 ~ 300 ℃ of sintering 5 ~ 6 hours,
E, die body are come out of the stove and are cooled to the demoulding after the room temperature.
2. the compressed air secondary filter according to claim 1 production method of polyethylene micropore screen pipe, it is characterized in that: the molecular weight of polyethylene of polyethylene powder is: 3,000,000 units ~ 4,800,000 units.
3. the compressed air secondary filter according to claim 1 production method of polyethylene micropore screen pipe is characterized in that: during the assembling die body, the spacing between outer iron pipe mould inwall and the interior iron pipe mould outer wall is 8 ~ 10mm.
4. compressed air secondary filter according to claim 1 is characterized in that: when carrying out the operation of C step, pour into while vibrating with the production method of polyethylene micropore screen pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010270408 CN102068866A (en) | 2010-09-02 | 2010-09-02 | Method for manufacturing polyethylene microporous filter tube for secondary filtering of compressed air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010270408 CN102068866A (en) | 2010-09-02 | 2010-09-02 | Method for manufacturing polyethylene microporous filter tube for secondary filtering of compressed air |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102068866A true CN102068866A (en) | 2011-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010270408 Pending CN102068866A (en) | 2010-09-02 | 2010-09-02 | Method for manufacturing polyethylene microporous filter tube for secondary filtering of compressed air |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105498394A (en) * | 2016-02-03 | 2016-04-20 | 李锦添 | Filter core |
| CN105536365A (en) * | 2016-02-03 | 2016-05-04 | 李锦添 | Manufacturing method of polyethylene filter body |
| CN108698819A (en) * | 2016-01-05 | 2018-10-23 | myFC 股份公司 | Distribution of the reactant solution in fuel cassette |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1605380A (en) * | 2004-09-08 | 2005-04-13 | 曾金华 | Hyperfiltration composite filter tube |
| CN201260909Y (en) * | 2008-07-23 | 2009-06-24 | 曾金华 | Micropore sintering filter tube |
-
2010
- 2010-09-02 CN CN 201010270408 patent/CN102068866A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1605380A (en) * | 2004-09-08 | 2005-04-13 | 曾金华 | Hyperfiltration composite filter tube |
| CN201260909Y (en) * | 2008-07-23 | 2009-06-24 | 曾金华 | Micropore sintering filter tube |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108698819A (en) * | 2016-01-05 | 2018-10-23 | myFC 股份公司 | Distribution of the reactant solution in fuel cassette |
| CN105498394A (en) * | 2016-02-03 | 2016-04-20 | 李锦添 | Filter core |
| CN105536365A (en) * | 2016-02-03 | 2016-05-04 | 李锦添 | Manufacturing method of polyethylene filter body |
| CN105536365B (en) * | 2016-02-03 | 2017-07-14 | 佛山市南海鑫环宝滤材有限公司 | A kind of preparation method of polyethylene filtering bodies |
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Application publication date: 20110525 |