CN201848171U

CN201848171U - Composite sealing ring for filtration and separation

Info

Publication number: CN201848171U
Application number: CN2010205946642U
Authority: CN
Inventors: 何向阳; 陈慧蓉
Original assignee: SHANGHAI RUNMING PRECISION TECHNOLOGY Co Ltd
Current assignee: SHANGHAI RUNMING PRECISION TECHNOLOGY Co Ltd
Priority date: 2010-11-05
Filing date: 2010-11-05
Publication date: 2011-06-01
Anticipated expiration: 2020-11-05

Abstract

The utility model discloses a composite sealing ring for filtration and separation. The sealing ring comprises a framework ring made of hard materials and an O ring made of soft materials, wherein the O ring is connected with the framework ring into a whole in the mode of injection molding. The composite sealing ring for filtration and separation has high sealing performance, can perfectly prevent liquid from seeping into a filter plant, and ensures the hardness and the strength of the sealing ring while improving the sealing performance. The composite sealing ring for filtration and separation has reasonable design and low production cost, and increases the filtration efficiency by 5 percent due to the high sealing performance so that internal leakage can be effectively avoided, thus not only saving energy resources, but also reducing the production cost and obtaining good economic benefit.

Description

Filter and use composite sealing ring with separating

Technical field

The sealing ring that the utility model filters and separatory potted component, particularly filter sock are used.

Background technology

Bag filter is widely used at industry-by-industry.As potted component, sealing ring is the filter sock critical component.The material of the structure of sealing ring, manufacturing process and employing all can have influence on sealing effectiveness.Usually, at the bottom of filter bag comprises bag 12 and sealing ring 11, as shown in Figure 1, the described bag end 12, be meant the part that is used for filter liquide or gas, use can make the liquid of part molecular structure or size or gas by and the liquid or the gas flexible material that can't pass through of another part molecular structure or size are made, as at the bottom of the cotton bag, at the bottom of polyester or the polypropylene non-woven fabric bag etc.Described filter bag is generally the supporting construction that adopts hard material to make and sews up mutually with a bag end 12 and form, and for example steel ring or plastic ring is sewed up mutually with a bag end 12, thereby is played 12 supporting role at the bottom of the bag.This employing hard material and bag end structure combining in the prior art, because hard material closes defective tightness with the bag bear building-up, poor sealing performance, cause the leakage that is filtered liquid easily, poor filtration effect, often need to filter repeatedly and can meet the requirements of filter effect, cause production efficiency low; To the use repeatedly of filter bag, also cause life of bag filter to reduce easily, the filter bag turnover rate increases, thereby has increased production cost.

The utility model content

The purpose of this utility model provides a kind of composite sealing ring, and this sealing ring not only has support strength preferably, has higher sealing simultaneously.

Composite sealing ring provided by the utility model, the skeleton ring of making by hard material (1) and form by the O type circle (2) that soft material is made, described O type circle and described skeleton ring (1) are structure as a whole.Especially, described O type circle (2) is fixed on the outside of described skeleton ring (1), and described skeleton ring (1) top is provided with flange (3), and the section of described O type circle (2) is the C type and is fixed on outside the described flange (3).

Composite sealing ring provided by the utility model has very high sealing, can perfectly stop in the liquid infiltration equipment.The utility model, the composite construction that adopts O type circle and skeleton ring to be connected as a single entity is increasing hardness and the intensity that sealing property has guaranteed sealing ring simultaneously.The utility model reasonable in design, cost of manufacture is low, owing to have very high sealing property, filter efficiency has improved 5%, has avoided internal leakage effectively, not only energy savings has also reduced production cost, has obtained good economic benefit.

Description of drawings

Be illustrated in figure 1 as the structural representation of prior art middle filtrator filter bag;

Be illustrated in figure 2 as the utility model filter sock composite construction sealing ring schematic perspective view;

Be illustrated in figure 2 as the utility model filter sock composite construction sealing ring generalized section.

The specific embodiment

Present embodiment provides a kind of filter sock, at the bottom of comprising bag and sealing ring, as shown in Figure 2, the skeleton ring 1 that described sealing ring is made by hard material reaches the O type circle of being made by soft material 2 and forms, described O type is fixed on the described skeleton ring 1 and is structure as a whole, thereby forms the sealing ring of a composite construction.Described sealing ring adopts different hardness and flexible composite to make.Described composite is meant hard material and soft material is carried out modification, adopts the method for injection moulding that it is combined into one.Like this, described sealing ring not only has stronger rigidity and reaches intensity preferably, and support effect is good, and has better sealing property.Described hard material can be natural plastics or synthetic plastic, as among polypropylene (PP), polyethylene (PE), formic acid glycol ester (PET), polytetrafluoroethylene (PTFE) (PTEE), chlorinated polypropylene (PPC), the Te Fulong (PTFE) one or more.Described soft elastic material can be rubber or silica gel material, as in acrylonitrile-butadiene rubber (B-Buna N), fluorubber (Vinton), T-polytetrafluoroethylene (PTFE) (T-PTFE), S--silicon rubber (S-Silicone rubber) and the E-ethylene propylene diene rubber (EPDM) one or more.The selection of above material, except that the intensity of considering material and sealing, also can be according to the use industry of this filter bag, consider the corrosion-resistant row of selected materials, environmental protection and hygienic requirements, and choose the raw material that meets the world or national authentication (as ROHS, PAHS authentication), this filter bag can be widely used at food, medicine or chemical field.

As shown in Figure 2, described O type circle 2 is fixed on the outside of described skeleton ring 1.Like this, because O type circle 2 has elasticity and pliability preferably, should can well combine with the different bag end by the sealing ring that described skeleton ring 1 and O type circle 2 constitute with large-size error, good seal performance not only, reduced in the production process requirement simultaneously to size at the bottom of the bag, reduce the generation at the bottom of bag end waste material and the substandard products bags, improved production efficiency.

Shown in Fig. 2 or 3, described skeleton ring 1 top is provided with flange 3, and the section of described O type circle 2 is the C type and is fixed on outside the described flange 3.Like this, when at the bottom of the bag with after described sealing ring compresses, O type circle 2 with better elasticity and sealing is set in the outside and the top of described skeleton ring 1 simultaneously, form the structure of dual face seals, further increase sealing ring and the tightness degree that described bag combines, further improved the sealing property of sealing ring.Described O type circle 2 can take hot melting mode to be combined as a whole with the bag end, thereby sealing ring and described bag bear building-up are integrated, sealing property further improves, and can not be filtered the leakage of liquid or gas in described bag top portion, makes this filter bag meet the requirement of secondary filter.Described skeleton ring 1 and O type circle 2 can be structure as a whole.Like this, sealing ring one-shot forming has in process of production reduced manufacturing process, has improved production efficiency.In addition, this integrative-structure does not connect the slit, has further increased the sealing property of described sealing ring.According to the requirement of market to the filter bag outward appearance, described O type circle 2 and skeleton ring 1 can be made into shades of colour, as redness, yellow, blueness, grey, white, black, green or its combination.

Claims

1. a filtration is used composite sealing ring with separating, and it is characterized in that: the skeleton ring (1) that described sealing ring (11) is made by hard material reaches the O type circle of being made by soft material (2) to be formed, and described O type circle (2) is structure as a whole with skeleton ring (1).

2. filtration as claimed in claim 1 is used composite sealing ring with separating, and it is characterized in that: described O type circle (2) is fixed on the outside of described skeleton ring (1).

3. filtration as claimed in claim 1 or 2 is used composite sealing ring with separating, and it is characterized in that: described skeleton ring (1) top is provided with flange (3), and the section of described O type circle (2) is the C type and is fixed on outside the described flange (3).