CN201208525Y - Foreign material filter - Google Patents

Abstract

The utility model relates to a foreign matter filter, which belongs to the liquid filter technology field, and comprises a barrel body, an upper sealing cap and a filter element device, wherein, the barrel body forms a heating jacket; the upper sealing cap is arranged at the upper part of the barrel body and opened with a feeding hole and a heat medium outlet; the upper sealing cap forms a heat insulation jacket which is communicated with the heating jacket through a communicating pipe; the filter element device is hanged in a barrel body containing chamber of the barrel body. The foreign matter filter is characterized in that a lower sealing cap is also arranged at the lower part of the barrel body and forms a lower sealing cap heat insulation jacket which is communicated with the heating jacket; a filter liquor outlet and a heat medium leading-in interface are opened on the lower sealing cap; a secondary filtering apparatus is arranged at the lower part of the barrel body containing chamber of the barrel body corresponding to the filter element device; the secondary filtering apparatus is clamped between the lower sealing cap and the lower rim of the barrel body. The foreign matter filter has the advantages as follows: ultrafine foreign matters can be effectively filtered from liquid materiel, and the quality of fine chemical products used for producing high-end electronic products.

Description

Foreign body filter

Technical field

The utility model belongs to the liquid filter technical field, is specifically related to a kind of foreign body filter, is used for the ultra-fine foreign material of filtering liquid material.

Background technology

Fig. 1 has illustrated the foreign body filter that the liquid towards material filters of being used for that generally uses in the prior art, it comprises a staving 1, this staving 1 constitutes a heating jacket 12, offers in the bottom of staving 1 to be used for the filtrate (liquid 13 that the filtrate of the staving cavity volume 11 of staving 1 is drawn and to offer being used for heating agent is incorporated into the heating agent intake 14 that described heating jacket 12 goes; One upper cover 2, be configured in the open topped position of described staving 1, this upper cover 2 constitutes an insulation jacket 21, insulation jacket 21 communicated with described heating jacket 12 by communicating pipe 211, and offering one on the upper cover 2 is used for that liquid material to be filtered is incorporated into the charging aperture 22 that described staving cavity volume 11 goes and offers being used for heating agent outlet 23 that heating agent is drawn; One filter element device 3, be arranged in the described staving cavity volume 111, this filter element device 3 comprises the support basket 31 and first filter bag 32, first filter bag 32 places and supports in the basket 31, and the top expansion of supporting basket 31 has been set as a flange 311, and the top of first filter bag 32 be formed with one with the first suitable flange 321 of described flange 311, described upper cover 2 is fixed by the fixture 4 and the open topped position of staving 1, and seizes described flange 311 and first flange 321 on both sides by the arms at staving 1 open topped position.

When using above-mentioned foreign body filter liquid towards material particularly liquid state easily being solidified material filtering, at first heating agent is incorporated in the heating jacket 12 to heating agent intake 14, the heating agent that enters into heating jacket 12 enters insulation jacket 21 through communicating pipe 211, and then draw by the heating agent outlet 23 in the capping 2, form circulation heating to the liquid material in the staving 1.Meanwhile, liquid material is that liquid material to be filtered is introduced from the charging aperture 22 on the upper cover 2, draws from the filtrate (liquid 13 of staving 1 bottom through first filter bag, 32 filtrate filtered.

Above-mentioned foreign body filter only can be with the trickle foreign matter filtering more than the 0.5 μ m in the liquid material, yet requires the filtration of extremely harsh for example liquid Pyromellitic Acid of liquid material and the foreign matter in the pyromellitic acid anhydride often powerless for some foreign matter.Because Pyromellitic Acid and pyromellitic acid anhydride product finally are used to make high-end electron level polyimides (PI) film, the electron level Kapton is thin more, and then the foreign matter to Pyromellitic Acid and pyromellitic acid anhydride requires tight more.At present, external the thickness of Kapton has been worked into 1～1.5 μ m, this is required the foreign matter of Pyromellitic Acid and pyromellitic acid anhydride detect and to reach following index: under 40 times magnifying glass, detect the number of ultra-fine foreign material＜0.15 in the material/mm ², this just requires filtering accuracy to reach 0.01～0.1 μ m.Though above only put to the proof the example of Pyromellitic Acid and pyromellitic acid anhydride, yet have this situation for other equally as making industrial chemicals that high-end product uses.In view of this, must rationally improve, use the fine chemical product of guaranteeing China and move towards the international market filter of the prior art.The technical scheme that the utility model will be introduced below produces down based on this technical background.

Summary of the invention

Task of the present utility model is that a kind of foreign body filter that the effective filtering of ultra-fine foreign material in the liquid material can be used guarantee to the quality of the fine chemical product of the strict control of ultra-fine foreign material number will be provided.

Task of the present utility model is finished like this, a kind of foreign body filter, it comprises that one constitutes the staving of heating jacket, one is configured in staving top and upper cover that offer charging aperture and heating agent outlet, upper cover constitutes an insulation jacket, insulation jacket communicated with described heating jacket by communicating pipe, one filter element device, be hung in the staving cavity volume of described staving, characteristics are: the bottom at described staving also is equipped with capping, following capping constitutes capping insulation jacket, following capping insulation jacket communicates with described heating jacket by junction pipe, covers to offer the filtrate outlet and be used for that heating agent is incorporated into the described heating agent of capping insulation jacket down in lower seal and introduces interface; Be provided with the cascade filtration device in the bottom of the staving cavity volume of described staving and with the corresponding position of described filter element device, this cascade filtration device is clamped between the lower edge of capping down and staving.

In a specific embodiment of the present utility model, described filter element device comprises support basket and first, second filter bag, first filter bag places and supports in the basket, and second filter bag holds in first filter bag, the top expansion of supporting basket has been set as a flange, the top of first filter bag constitutes one first flange, and the top of second filter bag constitutes one second flange, first, second flange and described flange are suitable, and first, second flange and flange are jointly seized on both sides by the arms between the mating surface of upper cover and staving.

In another specific embodiment of the present utility model, the felt filter bag of described first filter bag for adopting polyster fibre to form through acupuncture.

In another specific embodiment of the present utility model, described second filter bag is the terylene cloth bag.

In another specific embodiment of the present utility model, the thickness of described felt filter bag is that 2mm, density are 0.25g/cm ³

Go back in the specific embodiment of the present utility model, described terylene cloth bag is a long filament terylene cloth bag.

More of the present utility model and in specific embodiment, described cascade filtration device comprises first, second woven dacron and the filter core that the three stacks together, wherein, filter core is between first, second woven dacron, first, second woven dacron and filter core are jointly seizing on both sides by the arms between the mating surface of following capping and staving, wherein, also be provided with a sieve plate in the capping down.

In of the present utility model and then specific embodiment, described woven dacron is the long filament woven dacron, and described filter core is the thick compound probability filter paper of 0.2mm.

Of the present utility model again more and in specific embodiment, described heating agent is steam or conduction oil.

In again of the present utility model and then specific embodiment, described heating agent is a steam.

The advantage of the technical scheme that the utility model is recommended: because the bottom of staving is constituted capping, again owing to below the filter element device, set up the cascade filtration device, and the cascade filtration device is seized on both sides by the arms between the mating surface of following capping and staving bottom by following capping, therefore filter by the liquid material after the filtration of filter element device and then by the cascade filtration device, thereby the ultra-fine foreign material in the filtering liquid material effectively ensures the quality of the fine chemical product that is used to produce high-end electronic product.

Description of drawings

Fig. 1 is the structural representation of the foreign body filter in the prior art.

Fig. 2 is the structural representation of foreign body filter of the present utility model.

The specific embodiment

Embodiment:

Ask for an interview Fig. 2, provided the cylindrical circular staving 1 of shape, this staving 1 constitutes heating jacket 12, so that by the heating agent that is incorporated in the heating jacket 12 liquid material in the staving cavity volume 11 is heated, prevent that the liquid material temperature is lower than fusing point and solidifies, and promptly prevents to be become by liquid state solid-state.Capping 2 is mixed by one group of fixture, 4 lids in the top of staving 1, and in order to embody the excellent sealing between upper cover 2 and staving 1 upper edge, suggestion adds sealing ring 41.Offer the charging aperture 22 that is used for liquid material is incorporated into 3 filtrations of staving cavity volume 11 confession filter element devices in the centre of upper cover 2, and offer a heating agent outlet 23, be used for the heating agent of insulation jacket 21 is drawn at the inclined to one side sidepiece of upper cover 2.Insulation jacket 21 is connected with upper cover 2 by an end and the other end is connected with staving 1 communicates with heating jacket 12 communicating pipe 211, realizes communicating pipes 211 and being communicated with by a pair of connector or claiming a pair of first attaching nut 2111 to realize of insulation jacket 21 and heating jacket 12.Hence one can see that, played communicating pipe 211 to connect the function served as bridge between insulation jacket 21 and the heating jacket 12 or claim transitional function.

Filter element device 3 to be arranged in the staving cavity volume 11 with hanging form, as the support basket 31 that constitutes filter element device 3, the material preferable alloy, its top is expanded and is set as one and is used to hang the flange 311 that goes on the bead at open topped position of staving 1, here the alleged preferred version of hanging is welding, first filter bag 32 is to close the felt that forms by the needing machine thorn in the polyster fibre employing on-woven machinery to become, the industry custom is called the felt filter bag, and its preferred thickness is that 2mm, density are 0.25g/cm ³The open topped position of first filter bag 32 outwards turns and is formed with one first flange 321, when first filter bag 32 be received into support in the basket 31 after, its first flange 321 and aforesaid flange 311 coincide.Second filter bag 33 adopts the long filament woven dacron to make.The open topped position of second filter bag 33 equally outwards turns and is formed with one second flange 331, and after second filter bag 33 was placed in first filter bag 32, its second flange 331 fitted with aforesaid first flange 321.After treating that 3 settings of filter element device are finished, add sealing ring 41 again, the combination that adds fastener with fastener 4 as bolt connects upper cover 2 and staving 1, and flange 311 and first, second flange 321,331 folders that will support basket 31 simultaneously are hung between the mating surface of upper cover 2 and staving 1.

Please continue to see Fig. 2, the bottom of staving 1 disposes down capping 5, offer in the centre of down capping 5 and to be used for the filtrate outlet 52 of drawing through the liquid material after filtering, and the inclined to one side sidepiece in capping 5 down offers heating agent introducing interface 53, is used for heating agent is incorporated into down the following capping insulation jacket 51 of capping 5.In addition, in following capping 5, also be shelved with a sieve plate 7 and be used to support filter 6.Following capping insulation jacket 51 is connected with following capping 5 by an end and junction pipe 511 that the other end is connected with staving 1 communicates with heating jacket 12, being communicated with by a pair of connector or claiming a pair of second attaching nut 5111 to realize of junction pipe 511 and insulation jacket 51 and heating jacket 12.Hence one can see that, the function served as bridge under junction pipe 511 has played and connected between capping insulation jacket 51 and the heating jacket 12.Preferred scheme is that communicating pipe 211 keeps the position at diagonal angle to concern with junction pipe 511.

Still ask for an interview Fig. 2, the cascade filtration device 6 that the utility model is recommended is to be made of the three's first long filament woven dacron 61, filter core 63 and second long filament woven dacron 62 together stacked on top of each other, filter core 63 occupy between first, second long filament woven dacron 61,62, promptly, by first, second long filament woven dacron 61,62 filter core 63 is held under the arm and to be protected, prevent that filter core 63 from causing damage because of the impact deformation of suffering liquid material.Filter core 63 is a compound probability filter paper.The edge of first, second long filament woven dacron 61,62 and filter core 63 is shelved on down capping 5 and is used on the bead that matches with the lower edge of staving 1, when using such as descending capping 5 with staving 1 fixedly the time by fastener 8 that fastener, bolt were combined into adding sealing gasket 81, the marginal portion of aforesaid first, second long filament woven dacron 61,62 and filter core 63 is held in down between the mating surface of capping 5 and staving 1.

The heating agent that the applicant repeatedly mentions in the above both can be a steam, also can be conduction oil or other equivalent media, selected steam in the present embodiment.

Application examples:

Please in conjunction with Fig. 2, the steam of pressure≤0.4MPa is introduced interface 53 from heating agent to be incorporated into down the capping insulation jacket 51, enter heating jacket 12 through junction pipe 511, enter insulation jacket 21 through communicating pipe 211 again, until drawing, thereby constitute the continual heating that staving cavity volume 11 is circulated by heating agent outlet 23.With 1m ³Crude product pyromellitic acid anhydride 60kg, the dehydrating agent 0.5m of concentration 40% in the reactor ³Under the control flow status, go into staving cavity volume 11 from the charging aperture 22 of upper cover 2 at the liquid material behind 120 ℃ of reaction 1.5h while hot with pulverous activated carbon 3kg, under condition of negative pressure, take the lead in filtering by filter element device 3, liquid material after the filtration filters and draws from the filtrate outlet 52 of capping 5 down through cascade filtration device 6 again, the filtrate of drawing is to obtain crystallization after filtrate process crystallisation by cooling, the filtration (filtering crystalline mother solution), the pyromellitic acid anhydride product 48.5kg that obtains making with extra care after the drying again, yield 80.83%.Through product analysis being detected purity 99.48%.Sampling, with 40 times of (multiplication factor) microscopic examinations, the 0.07/mm of ultra-fine foreign material content in the product ²Therefore can prove, adopt the quality of the liquid material that foreign body filter provided by the utility model filters can fully satisfy the desired technical indicator of raw material that is applied to produce high-end electronic product, that is, the ultra-fine foreign material number is necessary＜0.15/mm ²After use after a while, can change first, second filter bag 32,33 and the cascade filtration device 6 of filter element device 3.

Comparative example:

The processing mode processing pyromellitic acid anhydride identical with application examples, only be that employed foreign body filter is that prior art is a foreign body filter shown in Figure 1, through sampling, with the microscopic examination of amplifying 40 times, it is very surprised that the result makes us, and the ultra-fine foreign material number is 1.0/mm ²Make product be tending towards scrapping.

In sum, technical scheme disclosed in the utility model should be ultimate attainment, and also be very easily for first, second filter bag 32,33 and the cascade filtration device 6 of changing filter element device 3, as long as pine is opened fixture 4 and fastener 8, recover fixture 4 and fastener 8 after the end to be replaced again, respectively that upper and lower capping 2,5 and staving 1 is fixing.

Claims (10)

1, a kind of foreign body filter, it comprises that one constitutes the staving (1) of heating jacket (12), one is configured in staving (1) top and upper cover (2) that offer charging aperture (22) and heating agent outlet (23), upper cover (2) constitutes an insulation jacket (21), insulation jacket (21) communicated with described heating jacket (12) by communicating pipe (211), one filter element device (3), be hung in the staving cavity volume (11) of described staving (1), it is characterized in that: also be equipped with capping (5) in the bottom of described staving (1), following capping (5) constitutes capping insulation jacket (51), following capping insulation jacket (51) communicates with described heating jacket (12) by junction pipe (511), is descending the heating agent introducing interface (53) that offers filtrate outlet (52) in the capping (5) and be used for heating agent is incorporated into described capping insulation jacket (51) down; Be provided with cascade filtration device (6) in the bottom of the staving cavity volume (11) of described staving (1) and with the corresponding position of described filter element device (3), this cascade filtration device (6) is clamped between the lower edge of capping (5) down and staving (1).

2, foreign body filter according to claim 1, it is characterized in that described filter element device (3) comprises support basket (31) and first, second filter bag (32,33), first filter bag (32) places and supports in the basket (31), and second filter bag (33) holds to go in first filter bag (32), the top expansion of supporting basket (31) has been set as a flange (311), the top of first filter bag (32) constitutes one first flange (321), and the top of second filter bag (33) constitutes one second flange (331), first, second flange (321), (331) suitable with described flange (311), first, second flange (321,331) and flange (311) jointly seize on both sides by the arms between the mating surface of upper cover (5) and staving (1).

3, foreign body filter according to claim 2 is characterized in that the felt filter bag of described first filter bag (32) for adopting polyster fibre to form through acupuncture.

4, foreign body filter according to claim 2 is characterized in that described second filter bag (33) is the terylene cloth bag.

5, foreign body filter according to claim 3, the thickness that it is characterized in that described felt filter bag are that 2mm, density are 0.25g/cm ³

6, foreign body filter according to claim 4 is characterized in that described terylene cloth bag is a long filament terylene cloth bag.

7, foreign body filter according to claim 1, it is characterized in that first, second woven dacron (61,62) and filter core (63) that described cascade filtration device (6) comprises the three and stacks together, wherein, filter core (63) is positioned between first, second woven dacron (61,62), first, second woven dacron (61,62) and filter core (63) are jointly seizing on both sides by the arms between the mating surface of following capping (5) and staving (1), wherein, also be provided with a sieve plate (7) in the capping (5) down.

8, foreign body filter according to claim 7 is characterized in that described woven dacron is the long filament woven dacron, and described filter core is the thick compound probability filter paper of 0.2mm.

9, foreign body filter according to claim 1 is characterized in that described heating agent is steam or conduction oil.

10, foreign body filter according to claim 9 is characterized in that described heating agent is a steam.

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