Efficient composite gas-liquid coalescence filter element

Abstract

The utility model discloses an efficient composite gas-liquid coalescence filter element, relates to the technical field of filter elements, and aims to solve the problems that when a polyester cotton liquid drainage layer is welded and fixed, a polyester material is directly heated and shrunk seriously due to welding temperature rise, the length of the polyester layer is shortened, the polyester layer is separated from an end cover, and the sealing performance between the polyester layer and the end cover is reduced. Comprising a filter element body and an end cover glued to the end of the filter element body, the filter element body is sequentially provided with an inner framework, a flow guide layer, a coalescence layer, a supporting layer, an outer framework and a polyester cotton liquid drainage layer from inside to outside, and an adhesive tape winding the polyester cotton liquid drainage layer by a circle is pasted to the position, close to the end cover, of the surface of the polyester cotton liquid drainage layer. A circle of adhesive tape is additionally arranged at the position needing to be welded, the adhesive tape is welded in the welding process, the adhesive tape has the effect of isolating the polyester cotton liquid drainage layer from being in direct contact with welding equipment, shrinkage of polyester is reduced, and the sealing performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter core field especially high -efficient composite gas -liquid coalescence filter core. BACKGROUND

[0002] Coalescence filter core is a kind of filtering equipment with coalescence material as medium, and it is the main element in coalescer that plays the filtering role. The tiny oil droplets dispersed in water or other liquid are captured by the superfine fibers on the surface of oil-wet filter material, and coalesce to form larger oil beads. Since the density of oil beads is less than that of water, the coalesced oil beads automatically float to the top of coalescer and flow out from the opening at the top of coalescer. Water directly flows out through the side wall of filter material, thereby realizing the effect of oil-water separation.

[0003] The current gas-liquid coalescence filter core is in the shape of a cylinder, and it has, from inside to outside, a metal inner framework, a glass fiber folding coalescence layer and a polyester cotton liquid discharge layer, with an end cap at each end of the filter core. Under normal circumstances, the inside space of the end cap has glue, and the end portions of each layer are inserted into the inside space of the end cap and bonded, and then welded and fixed in the next step. However, due to the heating caused by welding, the polyester material is directly heated and shrinks severely, the length of the polyester layer is shortened and comes out of the end cap, resulting in a decrease in the sealing property between the polyester layer and the end cap.

[0004] Therefore, the high-efficiency composite gas-liquid coalescence filter core is proposed. SUMMARY

[0005] In order to improve the problem that, when welding and fixing the polyester cotton liquid discharge layer, the polyester material is directly heated and shrinks severely due to the heating caused by welding, the length of the polyester layer is shortened and comes out of the end cap, resulting in a decrease in the sealing property between the polyester layer and the end cap, the utility model provides the high-efficiency composite gas-liquid coalescence filter core.

[0006] The utility model provides high -efficient composite gas -liquid coalescence filter core adopts the following technical scheme:

[0007] The high-efficiency composite gas-liquid coalescence filter core comprises a filter core body and an end cap glued to the end portion of the filter core body, and the filter core body has, from inside to outside, an inner framework, a flow guide layer, a coalescence layer, a support layer, an outer framework and a polyester cotton liquid discharge layer. A tape is pasted around the polyester cotton liquid discharge layer at the position close to the end cap on the surface of the polyester cotton liquid discharge layer.

[0008] By adopting the above technical scheme, the filter core body is provided with the flow guide layer, so that the coalescence layer is spaced apart from the inner framework. The grid-shaped flow guide layer can make the oil droplets adhere and grow larger to form large oil droplets, thereby improving the filtering effect. In addition, a tape is added around the position to be welded, and the welding is performed on the tape. The tape can prevent the polyester cotton liquid discharge layer from being directly contacted with the welding equipment, thereby reducing the shrinkage of the polyester and improving the sealing property.

[0009] Optionally, the surface of the adhesive tape is provided with a mark line.

[0010] By adopting the technical scheme, the mark line plays a guiding role when the welding equipment welds the polyester cotton liquid drainage layer, and the accuracy of the welding position of the welding equipment on the surface of the polyester cotton liquid drainage layer is improved.

[0011] Optionally, one side of the adhesive tape is bonded to the surface of the end cover.

[0012] By adopting the technical scheme, the adhesive tape can bond the polyester cotton between the welding position of the polyester cotton liquid drainage layer and the end cover, so that the polyester cotton is not easily removed from the inside of the end cover due to shrinkage.

[0013] Optionally, the surface of the end cover near one end of the polyester cotton liquid drainage layer is provided with an annular groove, and one side of the adhesive tape is bonded to the inside of the annular groove, and the edge of the adhesive tape abuts against the side wall of the annular groove.

[0014] By adopting the technical scheme, by abutting the edge of the adhesive tape against the side wall of the annular groove, the adhesive tape is not easily bonded crookedly when bonded to the surface of the polyester cotton liquid drainage layer.

[0015] Optionally, the bottom wall of the annular groove is provided with a grid pattern.

[0016] By adopting the technical scheme, the grid pattern improves the stability of the bonding between the adhesive tape and the end cover.

[0017] Optionally, the inner side wall of the end cover is fixedly connected with a plurality of threaded strips, and a glue storage groove is formed between adjacent two threaded strips.

[0018] By adopting the technical scheme, by providing the glue storage groove, when the filter core body and the end cover are bonded, the glue storage groove plays a role of storing glue, reduces the outward flow of glue in the end cover, and thus is beneficial to improve the bonding effect between the end cover and the filter core body.

[0019] Optionally, a plurality of positioning protrusions arranged in a ring array are fixedly connected to the inner wall of the end cover near the inner wall of the port.

[0020] By adopting the technical scheme, the positioning protrusions are arranged, and during installation, the inner diameter of the end cover is usually larger than the outer diameter of the filter core body to accommodate glue for bonding, and the positioning protrusions facilitate the coaxial installation of the end cover and the filter core body, thereby improving the accuracy of the installation of the end cover and the filter core body.

[0021] In summary, the utility model has the following beneficial effects:

[0022] 1. The utility model adds a guide layer to the filter element body, so that the coalescence layer is separated from the inner frame. The grid-like shape of the guide layer allows oil droplets to adhere and grow larger, forming large oil droplets and improving the filtering effect.

[0023] 2. The utility model adds a circle of tape at the position where welding is required. When welding, the tape is welded at the tape. The tape can isolate the polyester cotton drainage layer from direct contact with the welding equipment, reduce the shrinkage of polyester, and improve the sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0025] Figure 2 It is a structural schematic diagram of the utility model embodying the threaded strip.

[0026] Figure 3 It is a schematic diagram of the cross-sectional structure of the filter element body in a top view of the present invention.

[0027] Description of reference numerals:

[0028] 1. Filter element body; 101. Inner frame; 102. Guide layer; 103. Coalescing layer; 104. Support layer; 105. Exoskeleton; 106. Polyester cotton drainage layer; 2. End cap; 3. Adhesive tape; 4. Marking line; 5. Annular groove; 6. Grid pattern; 7. Threaded strip; 8. Glue storage tank; 9. Positioning protrusion. DETAILED DESCRIPTION

[0029] The following is in conjunction with the appended drawings in the embodiment of the present utility model. Figures 1-3 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0030] Please refer to Figures 1-2, efficient composite gas-liquid coalescing filter element, comprising a filter element body 1 and a end cap 2 glued to the end of the filter element body 1, the inner wall of the end cap 2 is fixedly connected with a plurality of threaded strips 7, a glue storage groove 8 is formed between adjacent two threaded strips 7, through the setting of the glue storage groove 8, when the filter element body 1 and the end cap 2 are glued, the glue storage groove 8 plays a role of storing glue, reducing the outward flow of glue inside the end cap 2, thereby facilitating to improve the gluing effect between the end cap 2 and the filter element body 1. The inner wall of the end cap 2 is fixedly connected with a plurality of positioning protrusions 9 arranged in a ring array near the inner wall of the port, the setting of the positioning protrusions 9, since during installation, the inner diameter of the end cap 2 is usually larger than the outer diameter of the filter element body 1 to accommodate glue for gluing, and the positioning protrusions 9 facilitate to keep coaxial when the end cap 2 and the filter element body 1 are installed, thereby improving the accuracy when the end cap 2 and the filter element body 1 are installed.

[0031] Referring to Figure 1 and Figure 3 , the filter element body 1 is sequentially provided with an inner skeleton 101, a flow guide layer 102, a coalescing layer 103, a support layer 104, an outer skeleton 105 and a polyester cotton liquid discharge layer 106 from inside to outside, wherein the inner skeleton 101 and the outer skeleton 105 are both stainless steel punched spiral nets, the flow guide layer 102 is a polyester grid, the coalescing layer 103 is glass fiber, and the support layer 104 is a metal mesh, and the polyester cotton liquid discharge layer 106 is long-fiber polyester cotton. Compared with the prior art, the filter element body 1 of the present application increases the flow guide layer 102, so that the coalescing layer 103 is spaced apart from the inner skeleton 101, and the grid-shaped flow guide layer 102 can make the oil droplets adhere and grow larger, forming large oil droplets and improving the filtering effect.

[0032] Referring to Figure 1 , a tape 3 is pasted around the polyester cotton liquid discharge layer 106 on the surface of the polyester cotton liquid discharge layer 106 close to the end cap 2, by adding a tape 3 around the position to be welded, welding against the tape 3, the tape 3 plays a role of isolating the polyester cotton liquid discharge layer 106 from direct contact with the welding equipment, reducing the shrinkage of polyester and improving the sealing performance. The surface of the tape 3 is provided with a mark line 4, the setting of the mark line 4 makes the welding equipment play a guiding role when welding the polyester cotton liquid discharge layer 106, improving the accuracy of the welding position on the surface of the polyester cotton liquid discharge layer 106.

[0033] Referring to Figure 1 and Figure 2The side of the adhesive tape 3 is adhered to the surface of the end cover 2, and the adhesive tape 3 can adhere the polyester cotton between the surface welding position of the polyester cotton drainage layer 106 and the end cover 2, so that the polyester cotton is not easy to move out from the inside of the end cover 2 due to shrinkage. The surface of the end cover 2 near one end of the polyester cotton drainage layer 106 is provided with an annular groove 5, and the side of the adhesive tape 3 is adhered to the inside of the annular groove 5 and the edge of the adhesive tape 3 abuts against the side wall of the annular groove 5, so that the adhesive tape 3 is not easy to be adhered to be crooked when the adhesive tape 3 is adhered to the surface of the polyester cotton drainage layer 106. The bottom wall of the annular groove 5 is provided with a grid pattern 6, and the grid pattern 6 improves the stability of the adhesion between the adhesive tape 3 and the end cover 2.

[0034] The implementation principle of the utility model is that the filter core body 1 is provided with a flow guide layer 102, so that the coalescing layer 103 is spaced apart from the inner framework 101, the flow guide layer 102 is grid-shaped, oil droplets can be attached and grow larger, large oil droplets are formed, the filtering effect is improved, additionally, a ring of adhesive tape 3 is arranged at the position needing welding, the adhesive tape 3 is welded, the adhesive tape 3 can prevent the polyester cotton drainage layer 106 from directly contacting the welding equipment, the shrinkage of polyester is reduced, the sealing property is improved, furthermore, the glue storage groove 8 is arranged, when the filter core body 1 and the end cover 2 are glued, the glue storage groove 8 can store glue, the glue in the end cover 2 is prevented from flowing outwards, so that the gluing effect between the end cover 2 and the filter core body 1 is improved, meanwhile, the positioning convex 9 is arranged, when the end cover 2 is installed, the inner diameter of the end cover 2 is usually larger than the outer diameter of the filter core body 1 to accommodate glue for gluing, and the positioning convex 9 can help the end cover 2 and the filter core body 1 to be coaxial when being installed, so that the accuracy when the end cover 2 and the filter core body 1 are installed is improved.

[0035] The above only describes the preferred embodiments of the utility model, and is not used for limiting the utility model, although the utility model is described in detail with reference to the foregoing embodiments, the skilled in the art can still modify the technical scheme recorded in the foregoing embodiments or make equivalent replacement to part of the technical features. Any modification, equivalent replacement, improvement and the like within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A high-efficiency composite gas-liquid coalescing filter element, comprising a filter element body (1) and an end cap (2) glued to the end of the filter element body (1), characterized in that: The filter element body (1) is provided with an inner skeleton (101), a guide layer (102), a coalescing layer (103), a support layer (104), an outer skeleton (105) and a polyester cotton drainage layer (106) in sequence from the inside to the outside, and a tape (3) wrapped around the polyester cotton drainage layer (106) is adhered to the surface of the polyester cotton drainage layer (106) near the end cover (2).

2. The high-efficiency composite gas-liquid coalescing filter element according to claim 1, characterized in that: A marking line (4) is provided on the surface of the adhesive tape (3).

3. The high-efficiency composite gas-liquid coalescing filter element according to claim 1, characterized in that: One side of the adhesive tape (3) is bonded to the surface of the end cover (2).

4. The high-efficiency composite gas-liquid coalescing filter element according to claim 3, characterized in that: An annular groove (5) is provided on the surface of the end cap (2) close to one end of the polyester cotton drainage layer (106), one side of the adhesive tape (3) is bonded to the inside of the annular groove (5), and the edge of the adhesive tape (3) abuts against the side wall of the annular groove (5).

5. The high-efficiency composite gas-liquid coalescing filter element according to claim 4, characterized in that: A grid pattern (6) is provided on the bottom wall of the annular groove (5).

6. The high-efficiency composite gas-liquid coalescing filter element according to claim 1, characterized in that: A plurality of threaded strips (7) are fixedly connected to the inner side wall of the end cover (2), and a glue storage groove (8) is formed between two adjacent threaded strips (7).

7. The high-efficiency composite gas-liquid coalescing filter element according to claim 1, characterized in that: A plurality of positioning protrusions (9) arranged in a ring array are fixedly connected to the inner wall of the end cover (2) near the port.

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