WO2012058946A1 - 过滤和分离用复合密封圈 - Google Patents
过滤和分离用复合密封圈 Download PDFInfo
- Publication number
- WO2012058946A1 WO2012058946A1 PCT/CN2011/077482 CN2011077482W WO2012058946A1 WO 2012058946 A1 WO2012058946 A1 WO 2012058946A1 CN 2011077482 W CN2011077482 W CN 2011077482W WO 2012058946 A1 WO2012058946 A1 WO 2012058946A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ring
- filtration
- sealing ring
- composite sealing
- bag
- Prior art date
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 20
- 238000001914 filtration Methods 0.000 title claims abstract description 18
- 238000000926 separation method Methods 0.000 title claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 44
- 239000000463 material Substances 0.000 claims abstract description 21
- -1 polypropylene Polymers 0.000 claims description 13
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 11
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 11
- 239000004743 Polypropylene Substances 0.000 claims description 10
- 229920001155 polypropylene Polymers 0.000 claims description 10
- 239000004033 plastic Substances 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 7
- 239000007779 soft material Substances 0.000 claims description 7
- 229920002943 EPDM rubber Polymers 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- UKQJDWBNQNAJHB-UHFFFAOYSA-N 2-hydroxyethyl formate Chemical compound OCCOC=O UKQJDWBNQNAJHB-UHFFFAOYSA-N 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 Teflon® Polymers 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 229920000459 Nitrile rubber Polymers 0.000 claims description 2
- 229920001973 fluoroelastomer Polymers 0.000 claims description 2
- 229940058401 polytetrafluoroethylene Drugs 0.000 claims 3
- 238000001746 injection moulding Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000007788 liquid Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 239000004945 silicone rubber Substances 0.000 description 3
- 230000008093 supporting effect Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/23—Supported filter elements arranged for outward flow filtration
- B01D29/27—Filter bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/34—Seals or gaskets for filtering elements
Definitions
- the present invention relates to a sealing element for filtration and separation, in particular a sealing ring for a filter bag. Background technique
- Bag filters are widely used in various industries.
- the seal is a key component of the filter bag.
- the structure of the seal, the manufacturing process and the materials used will affect the sealing effect.
- the filter bag includes a bag bottom 12 and a sealing ring 11, as shown in Fig. 1, the bag bottom 12 refers to a portion for filtering a liquid or a gas, and a liquid or gas which allows a part of molecular structure or size to pass, Another part of the molecular structure or size of liquid or gas can not be passed through the flexible material, such as cotton bag bottom, polyester or polypropylene non-woven bag bottom.
- the filter bag is usually formed by suturing a support structure made of a hard material with the bottom 12 of the bag, for example, by stitching a steel ring or a plastic ring with the bottom 12 of the bag, thereby supporting the bottom 12 of the bag.
- a support structure made of a hard material with the bottom 12 of the bag, for example, by stitching a steel ring or a plastic ring with the bottom 12 of the bag, thereby supporting the bottom 12 of the bag.
- the structure in which the hard material is combined with the bottom of the bag because the hard material is not tightly combined with the bottom of the bag, the sealing performance is poor, and the leakage of the filtered liquid is liable to occur, and the filtering effect is poor, and the repeated filtering is often required.
- the required filtration effect can be achieved, resulting in low production efficiency; repeated use of the filter bag can also easily reduce the service life of the filter bag and increase the replacement rate of the filter bag, thereby increasing the production cost.
- the composite sealing ring provided by the invention comprises a skeleton ring (1) made of a hard material and an O-ring (2) made of a soft material, the O-ring and the skeleton ring (1) As a unitary structure.
- the O-ring (2) is fixed to the outside of the frame ring (1), the upper portion of the frame ring (1) is provided with a flange (3), and the O-ring (2) has a cross section of C-type and fixed outside the flange (3).
- the hard material is selected from natural plastic or artificial plastic, and may be polypropylene (PP), polyethylene (PE), ethylene glycol formate (PET), polytetrafluoroethylene.
- PTEE chlorinated polypropylene
- PPC chlorinated polypropylene
- Teflon Teflon
- the soft material is selected from rubber or silica gel materials, and may be nitrile rubber (B-Buna N), fluororubber (Vinton), T-polytetrafluoroethylene (T-PTFE), S--silicone rubber (S- Silicone rubber ) and E-ethylene propylene diene monomer
- the composite sealing ring provided by the invention has high sealing property and can perfectly prevent liquid from penetrating into the filtering device.
- the invention adopts a composite structure in which an O-ring and a skeleton ring are integrated, which improves the sealing performance and ensures the hardness and strength of the sealing ring.
- the structure design of the invention is reasonable, the manufacturing cost is low, and the filtration efficiency is improved by 5% due to the high sealing performance, thereby effectively avoiding internal leakage, not only saving energy, but also reducing production cost and achieving good economic benefits.
- FIG. 1 is a schematic structural view of a filter bag of the prior art
- FIG. 2 is a schematic perspective view of a composite structure sealing ring for a filter bag according to the present invention
- FIG. 3 is a schematic cross-sectional view showing a composite structural sealing ring for a filter bag according to the present invention.
- the embodiment provides a filter filter bag, including a bag bottom and a sealing ring.
- the sealing ring is made of a rigid material frame ring 1 and an O-ring made of a soft material. 2 Composition, the O-shape is fixed on the skeleton ring 1 and has an integral structure, thereby forming a sealing ring of a composite structure.
- the seal ring is made of a composite material of different hardness and elasticity.
- the composite material means that the hard material and the soft material are modified and integrated into one by injection molding.
- the sealing ring not only has strong rigidity and good strength, but also has a good supporting effect and better sealing performance.
- the hard material may be a natural plastic or an artificial plastic such as polypropylene (PP), polyethylene (PE), ethylene glycol formate (PET), polytetrafluoroethylene (PTEE), chlorinated polypropylene (PPC).
- PP polypropylene
- PE polyethylene
- PET ethylene glycol formate
- PTEE polytetrafluoroethylene
- PPC chlorinated polypropylene
- Teflon PTFE
- the soft elastic material may be a rubber or silica gel material such as B-Bima N, Vinton, T-PTFE, S--Silicone (S- Silicone rubber) and one or more of E-ethylene propylene diene monomer (EPDM).
- the selection of the above materials, in addition to the strength and sealing of the material, can also be based on the use of the filter bag industry, taking into account the corrosion resistance of the selected materials, environmental and hygiene requirements, and selection in line with international or national certification (such as The raw materials of ROHS and PAHS are used to make the filter bag widely used in food, medicine or chemical industry.
- the O-ring 2 is fixed to the outside of the frame ring 1.
- the sealing ring composed of the skeleton ring 1 and the O-ring 2 can be well combined with different bag bottoms having large dimensional errors. Not only good sealing performance, but also reduced production process
- the upper portion of the frame ring 1 is provided with a flange 3, and the O-ring 2 has a C-shaped cross section and is fixed outside the flange 3.
- the 0-ring 2 having better elasticity and sealing property is simultaneously sleeved on the outer side and the top of the frame ring 1 to form a double-sided sealed structure, further increasing The tightness of the sealing ring to the bag further improves the sealing performance of the sealing ring.
- the O-ring 2 and the bottom of the bag may be integrated into a heat fusion manner, so that the sealing ring is integrated with the bottom of the bag, the sealing performance is further improved, and the filtered liquid or the filtered liquid is not generated at the top portion of the bag or
- the leakage of gas makes the filter bag meet the requirements of precision filtration.
- the skeleton ring 1 and the O-ring 2 may be a unitary structure. In this way, the sealing ring is molded once in the production process, which reduces the manufacturing process and improves the production efficiency. In addition, this integral structure has no connection gap, which further increases the sealing performance of the sealing ring.
- the O-ring 2 and the frame ring 1 can be made in various colors such as red, yellow, blue, gray, white, black, green or a combination thereof.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Gasket Seals (AREA)
- Sealing Material Composition (AREA)
- Filtering Materials (AREA)
Description
过滤和分离用复合密封圈 技术领域
本发明涉及一种过滤和分离用的密封元件， 特别是过滤器滤袋用的密封圈。 背景技术
袋式过滤器， 在各个行业被广泛使用。 作为密封元件， 密封圈是过滤器滤袋 关键部件。 密封圈的结构、 制造工艺以及釆用的材料'都会影响到密封效果。 通 常， 滤袋包括袋底 12和密封圈 11， 如图 1所示， 所述袋底 12是指用于过滤液体或气 体的部分， 使用可使部分分子结构或大小的液体或气体通过、 而另一部分分子结 构或大小的液体或气体无法通过的柔性材料制成， 如棉布袋底、 聚酯或聚丙烯无 纺布袋底等。 所述滤袋， 通常为采用硬质材料制成的支撑结构与袋底 12相缝合而 成， 例如将钢圈或塑料圈与袋底 12相缝合， 从而起到对袋底 12的支撑作用。 现有 技术中这种采用硬质材料与袋底相结合的结构， 由于硬质材料与袋底结合不够紧 密， 密封性能差， 容易造成被过滤液体的泄露， 过滤效果差， 往往需要反复过滤 方可达到要求的过滤效果， 造成生产效率低下； 对滤袋的反复使用， 也容易造成 滤袋使用寿命减少， 滤袋更换率增加， 从而增加了生产成本。 发明内容
本发明的目的是提供一种复合密封圈， 这种密封圈不仅具有较好的支撑强 度， 同时具有较高的密封性。
本发明所提供的复合密封圈， 由硬质材料制成的骨架圈 (1)及由软质材料制成 的 O型圈 (2)组成， 所述 O型圈与所述骨架圈 （1 ) 为一体结构。 特别地， 所述 O型 圈 (2)固定在所述骨架圈 (1)的外侧， 所述骨架圈 (1)上部设有凸缘 (3)， 所述 O型圈 (2) 的剖面为 C型且固定在所述凸缘 (3)外。 所述硬质材料选自天然塑料或人造塑料， 可以是聚丙烯 （PP ) 、 聚乙烯 （PE ) 、 甲酸乙二醇酯 (PET)、 聚四氟乙烯
(PTEE) 、 氯化聚丙烯 （PPC) 、 特富隆 （PTFE) 中的一种或多种。 所述软质材 料选自橡胶或硅胶材料， 可以是丁腈橡胶 （B-Buna N) 、 氟橡胶 （Vinton) 、 T- 聚四氟乙烯 （T-PTFE ) 、 S--硅橡胶 （S- Silicone rubber ) 及 E-三元乙丙橡胶
(EPDM) 中的一种或多种。
- 1 - 替换页 （细则第 26条)
本发明所提供的复合密封圈， 具有很高的密封性， 能完美的阻止液体渗入过 滤设备中。 本发明， 采用 O型圈和骨架圈连为一体的复合结构， 在增加了密封性 能同时保证了密封圈的硬度和强度。 本发明结构设计合理， 制作成本低， 由于具 有很高的密封性能， 过滤效率提高了 5 % , 有效地避免了内泄漏， 不仅节约能源， 还降低了生产成本， 取得了好的经济效益。 附图概述
本发明的具体特征、 性能由以下的实施例及其附图进一步给出。
如图 1所示为现有技术中过滤器滤袋的结构示意图；
如图 2所示为本发明过滤器滤袋用复合结构密封圈立体示意图；
如图 3所示为本发明过滤器滤袋用复合结构密封圈剖面示意图。 本发明的最佳实施方式
本实施例提供了一种过滤器滤袋， 包括袋底和密封圈， 如图 2所示， 所述密 封圈由硬质材料制成的骨架圈 1及由软质材料制成的 O型圈 2组成， 所述 O型固定在 所述骨架圈 1上且为一体结构， 从而形成一个复合结构的密封圈。 所述密封圈采用 不同硬度和弹性的复合材料制成。 所述复合材料是指将硬质材料和软质材料进行 改性， 采用注塑的方法使其复合成一体。 这样， 所述密封圈不但具有较强的刚性 及较好的强度， 支撑效果好， 而且具有更好的密封性能。 所述硬质材料可以是天 然塑料或人造塑料， 如聚丙烯 （PP ) 、 聚乙烯 （PE) 、 甲酸乙二醇酯 (PET)、 聚 四氟乙烯 （PTEE) 、 氯化聚丙烯 （PPC) 、 特富隆 （PTFE) 中的一种或多种。 所 述软质弹性材料可以是橡胶或硅胶材料， 如丁腈橡胶 （B-Bima N ) 、 氟橡胶 (Vinton) 、 T-聚四氟乙烯 (T-PTFE) 、 S--硅橡胶 ( S- Silicone rubber) 及 E-三元 乙丙橡胶 （EPDM) 中的一种或多种。 以上材料的选择， 除考虑到材料的强度和 密封性外， 还可根据该滤袋的使用行业， 考虑到所选材料的耐腐蚀行， 环保及卫 生要求， 且选取符合国际或国家认证 （如 ROHS、 PAHS认证） 的原料， 使该滤袋 可在食品、 药品或化工领域得到广泛的应用。
如图 2所示， 所述 0型圈 2固定在所述骨架圈 1的外侧。 这样， 由于 0型圈 2具有 较好的弹性和柔软度， 该由所述骨架圈 1及 O型圈 2构成的密封圈可与具有较大尺 寸误差的不同袋底很好的结合在一起， 不但密封性能好， 同时降低了生产过程中
一 2—
替换页 （细则第 26条）
对袋底尺寸的要求， 减少了袋底废料及次品袋底的产生， 提高了生产效率。
如图 2或 3所示， 所述骨架圈 1上部设有凸缘 3， 所述 O型圈 2的剖面为 C型且固 定在所述凸缘 3外。 这样， 当袋底与所述密封圈压紧后， 具有较好弹性和密封性的 0型圈 2同时套设在所述骨架圈 1的外侧及顶部， 形成双面密封的结构， 更进一步 增加了密封圈与所述袋结合的紧密程度， 更进一步提高了密封圈的密封性能。 所 述 O型圈 2与袋底可采取热熔的方式结合为一体， 从而使密封圈与所述袋底结合为 一体， 密封性能进一步提高， 不会在所述袋顶部分发生被过滤液体或气体的泄 露， 使该滤袋符合精密过滤的要求。 所述骨架圈 1和 O型圈 2可为一体结构。 这 样， 在生产过程中密封圈一次成型， 减少了制造工艺， 提高了生产效率。 另外， 这种一体结构， 没有连接缝隙， 更进一步的增加了所述密封圈的密封性能。 根据 市场对过滤袋外观的要求， 所述 O型圈 2及骨架圈 1可制成各种颜色， 如红色、 黄 色、 蓝色、 灰色、 白色、 黑色、 绿色或其组合。
替换页 （细则第 26条)
Claims
1、 一种过滤和分离用复合密封圈， 其特征在于： 所述密封圈 （11 ) 由硬质材料制 成的骨架圈（1)及由软质材料制成的 0型圈（2)组成， 所述 0型圈 （2) 与骨架圈 （1 ) 为一 体结构。
2、 如权利要求 1所述的过滤和分离用复合密封圈， 其特征在于： 所述 0型圈（2)固定 在所述骨架圈（1)的外侧。
3、 如权利要求 1或 2所述的过滤和分离用复合密封圈， 其特征在于： 所述骨架圈（1) 上部设有凸缘 (3)， 所述 0型圈（2)的剖面为 C型且固定在所述凸缘 (3)外。
4、 如权利要求 1所述的过滤和分离用复合密封圈， 其特征在于： 所述硬质材料选自 天然塑料或人造塑料。
5、 如权利要求 4所述的过滤和分离用复合密封圈， 其特征在于： 所述硬质材料为聚 丙烯 （PP) 、 聚乙烯 （PE) 、 甲酸乙二醇酯 (PET)、 聚四氟乙烯 （PTEE) 、 氯化聚丙烯
(PPC) 、 特富隆 (PTFE) 中的一种或多种。
6、 如权利要求 1所述的过滤和分离用复合密封圈， 其特征在于： 所述软质材料选自 橡胶或硅胶材料。
7、 如权利要求 6所述的过滤和分离用复合密封圈， 所述软质材料为丁腈橡胶 （B- Buna N) 、 氟橡胶 （Vinton ) 、 T-聚四氟乙烯 （T-PTFE ) 、 S—硅橡胶 （S- Silicone rubber) 及 E_三元乙丙橡胶 （EPDM) 中的一种或多种。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105338302A CN102059014B (zh) | 2010-11-05 | 2010-11-05 | 过滤和分离用复合密封圈 |
| CN201010533830.2 | 2010-11-05 |
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| Publication Number | Publication Date |
|---|---|
| WO2012058946A1 true WO2012058946A1 (zh) | 2012-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/CN2011/077482 WO2012058946A1 (zh) | 2010-11-05 | 2011-07-22 | 过滤和分离用复合密封圈 |
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| Country | Link |
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| CN (1) | CN102059014B (zh) |
| WO (1) | WO2012058946A1 (zh) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010044420B4 (de) * | 2010-09-04 | 2012-06-28 | Hansa Metallwerke Ag | Zentrierdichtring für eine Sanitärarmatur, insbesondere eine Wachtischarmatur |
| CN102059014B (zh) * | 2010-11-05 | 2012-11-07 | 上海闰铭精密技术有限公司 | 过滤和分离用复合密封圈 |
| CN104910528A (zh) * | 2015-06-17 | 2015-09-16 | 谢伟杰 | 一种连接密封圈 |
| CN107383489A (zh) * | 2017-09-23 | 2017-11-24 | 安徽福斯特铝制品股份有限公司 | 一种汽车轮毂的轴承密封圈 |
| CN110982275A (zh) * | 2019-12-16 | 2020-04-10 | 九牧厨卫股份有限公司 | 一种耐老化软硬复合密封条及其制备方法 |
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| CN201848171U (zh) * | 2010-11-05 | 2011-06-01 | 上海闰铭精密技术有限公司 | 过滤和分离用复合密封圈 |
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| CN1127860A (zh) * | 1995-01-27 | 1996-07-31 | 杨守信 | 改性塑料外骨架式密封圈 |
| CN2526607Y (zh) * | 2002-01-30 | 2002-12-18 | 大庆油田有限责任公司 | 骨架式测试密封圈 |
| CN2934855Y (zh) * | 2006-06-06 | 2007-08-15 | 邵琦 | 钢骨架塑料复合管专用密封圈 |
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| DE202009014260U1 (de) * | 2009-10-21 | 2010-03-18 | M.D.S. Meyer Gmbh | Rohrdichtring für eine Muffenverbindung an Kunststoffrohren |
| CN102059014A (zh) * | 2010-11-05 | 2011-05-18 | 上海闰铭精密技术有限公司 | 过滤和分离用复合密封圈 |
| CN201848171U (zh) * | 2010-11-05 | 2011-06-01 | 上海闰铭精密技术有限公司 | 过滤和分离用复合密封圈 |
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