Membrane-covered filter element structure

Abstract

The utility model discloses a membrane filter element structure, which comprises a top cover, a metal frame, a filter material and a base, two ends of the metal frame are respectively arranged on the inner peripheral sides of the top cover and the base, the filter material is arranged between the top cover and the base and is sleeved on the outer peripheral side of the metal frame, and the filter material is arranged on the inner peripheral side of the top cover and the base. Two ends of the filter material are respectively provided with a sealing ring, one end of the top cover is provided with a first embedding groove, one end of the base is provided with a second embedding groove, the two sealing rings are respectively positioned in the first embedding groove and the second embedding groove, one end of each sealing ring is provided with a matching groove, and the matching grooves are matched with the first embedding groove and the second embedding groove. And one end of the filter material is inserted and fixed in the matching groove. The filter element has the effect of improving the filtering efficiency of the filter element.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of filter core, in particular to a film-coated filter core structure. BACKGROUND

[0002] The film-coated filter core is also called a film-coated filter cartridge. The filter cartridge comprises a top cover, a metal frame, a pleated filter material and a base. During assembly of the film-coated filter cartridge, the two ends of the pleated filter material are respectively embedded in the inner ends of the top cover and the base. Then, the two ends of the metal frame are respectively fixed on the inner circumferential sides of the top cover and the base, so as to limit the top cover and the base, and the pleated filter material is installed and fixed between the top cover and the base. The two ends of the pleated filter material are in abutting connection with the top cover or the base. After long-term use, gaps are generated between the two ends of the pleated filter material and the top cover or the base. Then, during use of the film-coated filter core, air flow blows towards the two ends of the pleated filter material. Then, impurities in the air flow pass through the gaps between the pleated filter material and the top cover or the base, so that the filtering efficiency of the film-coated filter core is reduced. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at the defects and deficiencies of prior art, provides a film-coated filter core structure.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] It comprises a top cover, a metal frame, a filter material and a base. The two ends of the metal frame are respectively arranged on the inner circumferential sides of the top cover and the base. The filter material is located between the top cover and the base and is sleeved on the outer circumferential side of the metal frame. The two ends of the filter material are respectively provided with sealing rings. One end of the top cover is provided with a first embedding groove. One end of the base is provided with a second embedding groove. The two sealing rings are respectively located in the first embedding groove and the second embedding groove. One end of the sealing ring is provided with a matching groove. One end of the filter material is inserted and fixed in the matching groove.

[0006] Preferably, the corresponding two inner side walls of the matching groove are arranged in an inclined manner.

[0007] Preferably, the sealing ring is provided with buffer cotton at the end away from the matching groove.

[0008] Preferably, the outer circumferential sides of the two ends of the metal frame are respectively provided with a sleeve ring. One end of the metal frame and the sleeve ring are sleeved and fixed on the inner side wall of the top cover. The other end of the metal frame and the sleeve ring are sleeved and fixed on the inner side wall of the base.

[0009] Preferably, a plurality of connecting plates are connected between the sleeve ring and the metal frame in a circumferential direction. The inner side wall of the top cover is provided with a first connecting groove for inserting the connecting plate. The inner side wall of the base is provided with a second connecting groove for inserting the connecting plate.

[0010] Preferably, fixing screws are respectively threaded through the inner sidewalls at both ends of the metal frame, one end of the fixing screw passes through the metal frame, the top cover and the collar in sequence, and the other end of the fixing screw is threaded into the collar.

[0011] Preferably, one end of the fixing screw is pressed against the sealing ring, causing the outer wall of the sealing ring to abut against the inner wall of the first or second embedding groove.

[0012] In summary, the beneficial technical effects of this application are as follows:

[0013] When assembling the filter element, place the two sealing rings into the first recess of the top cover and the second recess of the base, respectively. Then, insert and fix both ends of the filter media into the mating grooves of the two sealing rings. Next, press both ends of the metal frame against the inner walls of the top cover and the base, clamping the collar and metal frame onto the inner walls of the top cover and the base. Then, pass one end of the fixing screw through the inner walls of the metal frame and the top cover (and the inner wall of the base) and thread it into the collar. Finally, tighten the fixing screw to the seal. The sealing rings are pushed to press the outer periphery of the two sealing rings against the inner sidewalls of the first and second embedding grooves, respectively. The sealing rings can increase the sealing between the top cover and the filter media, as well as between the base and the filter media. With the tightening of the fixing screws, the outer periphery of the sealing rings can be tightly fitted to the sidewall of the first or second embedding groove, thereby increasing the sealing between the sealing rings and the first or second embedding groove. This prevents impurities in the airflow from flowing out between the filter media and the top cover, as well as between the filter media and the base, thus improving the filtration efficiency of the filter element. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the filter element of this utility model;

[0015] Figure 2 This is a cross-sectional schematic diagram of the filter element of this utility model;

[0016] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 This is a cross-sectional view of the filter element of this utility model from another direction;

[0018] Figure 5 yes Figure 4 Enlarged view of point B in the middle;

[0019] Figure 6 This is an exploded view of the filter element of this utility model.

[0020] In the diagram: 1. Top cover; 2. Metal frame; 3. Filter media; 4. Base; 5. First embedding groove; 6. Second embedding groove; 7. Sealing ring; 8. Mating groove; 9. Placement ring groove; 10. Buffer cotton; 11. Collar ring; 12. Connecting plate; 13. First connecting groove; 14. Second connecting groove; 15. First through hole; 16. Second through hole; 17. Threaded hole; 18. Fixing screw. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] This application discloses a membrane filter structure.

[0023] Reference Figure 1 , Figure 2 and Figure 4 It includes a top cover 1, a metal frame 2, a filter material 3 and a base 4. One end of the top cover 1 has a first embedding groove 5, and one end of the base 4 has a second embedding groove 6. One end of the filter material 3 is inserted into the first embedding groove 5, and the other end of the filter material 3 is inserted into the second embedding groove 6. The two ends of the metal frame 2 are located on the inner sidewalls of the top cover 1 and the base 4, respectively.

[0024] Reference Figure 3 , Figure 5 and Figure 6 A sealing ring 7 is placed in the first embedding groove 5 and the second embedding groove 6 respectively. A mating groove 8 is opened at the outer end of the sealing ring 7. The corresponding side walls of the mating groove 8 are inclined. The width of the opening end of the mating groove 8 is greater than the width of the bottom of the mating groove 8. The two ends of the filter material 3 are respectively inserted into the mating groove 8 of the sealing ring 7. Since the vertical section of the mating groove 8 is an isosceles trapezoid, one end of the filter material 3 is more closely attached to the side wall of the mating groove 8.

[0025] The sealing ring 7 has a placement groove 9 at the end away from the mating groove 8, and a cushioning cotton 10 is placed in the placement groove 9. When both ends of the filter material 3 are inserted into the first insertion groove 5 and the second insertion groove 6 respectively, and then the top cover 1 and the base 4 are fixed by the metal frame 2, the sealing ring 7 can press the cushioning cotton 10 to facilitate adjustment of the distance between the two sealing pads, thereby preventing the filter material 3 from being squeezed and bent.

[0026] Two collars 11 are fitted on the outer periphery of the two ends of the metal frame 2. The two collars 11 are respectively attached to the inner periphery of the first embedding groove 5 and the second embedding groove 6. Four connecting plates 12 are evenly connected circumferentially between the collars 11 and the metal frame 2. One end of the connecting plate 12 is welded and fixed to the outer side wall of the metal frame 2, and the other end of the connecting plate 12 is welded and fixed to the inner side wall of the collar 11. The inner side wall of the top cover 1 is evenly provided with a first connecting groove 13, and the inner side wall of the base 4 is evenly provided with a second connecting groove 14. The four connecting plates 12 at both ends of the metal frame 2 are respectively inserted and fixed in the first connecting groove 13 and the second connecting groove 14.

[0027] Four first through holes 15 are evenly distributed circumferentially on the sidewalls at both ends of the metal frame 2. Four second through holes 16 are distributed on the inner sidewalls of the top cover 1 and the base 4, respectively. Four threaded holes 17 are evenly distributed circumferentially on the sidewalls of the collar 11. The first through holes 15, second through holes 16, and threaded holes 17 are arranged correspondingly. Four fixing screws 18 are placed in each of the two ends of the metal frame 2. One end of the fixing screw 18 passes through the first through hole 15 and the second through hole 16 in sequence and is threaded into the threaded hole 17. The inner end of the fixing screw 18 is pressed against the sealing ring 7, so that the outer sidewall of the sealing ring 7 abuts against the inner sidewall of the first embedding groove 5 or the second embedding groove 6.

[0028] The implementation principle of a membrane filter structure disclosed in this application is as follows:

[0029] Place the two sealing rings 7 into the first recess 5 of the top cover 1 and the second recess 6 of the base 4, respectively. Then, insert and fix the two ends of the filter material 3 into the mating grooves 8 of the two sealing rings 7. Next, press the two ends of the metal frame 2 against the inner walls of the top cover 1 and the base 4, and clamp the collar 11 and the metal frame 2 onto the inner walls of the top cover 1 and the base 4. Then, pass one end of the fixing screw 18 through the inner walls of the metal frame 2 and the top cover 1 (and the inner wall of the base 4) and thread it into the collar 11. Finally, fix the screw 18. Pushing the sealing ring 7 will press the outer periphery of the two sealing rings 7 against the inner sidewalls of the first embedding groove 5 and the second embedding groove 6 respectively. The sealing ring 7 can increase the sealing between the top cover 1 and the filter material 3 and the base 4 and the filter material 3. Under the tightening of the fixing screw 18, the outer periphery of the sealing ring 7 can be tightly fitted to the sidewall of the first embedding groove 5 or the second embedding groove 6, thereby increasing the sealing between the sealing ring 7 and the first embedding groove 5 or the second embedding groove 6, and preventing impurities in the airflow from flowing out between the filter material 3 and the top cover 1 and between the filter material 3 and the base 4.

[0030] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A membrane filter element structure, comprising a top cover (1), a metal frame (2), filter media (3), and a base (4), wherein the two ends of the metal frame (2) are respectively disposed on the inner periphery of the top cover (1) and the base (4), and the filter media (3) is located between the top cover (1) and the base (4) and sleeved on the outer periphery of the metal frame (2), characterized in that: The filter material (3) is provided with sealing rings (7) at both ends. The top cover (1) has a first embedding groove (5) at one end and a second embedding groove (6) at one end of the base (4). The two sealing rings (7) are located in the first embedding groove (5) and the second embedding groove (6) respectively. A mating groove (8) is opened at one end of the sealing ring (7), and one end of the filter material (3) is inserted and fixed in the mating groove (8).

2. The membrane filter structure according to claim 1, characterized in that, The two inner sidewalls of the mating groove (8) are inclined.

3. The membrane filter structure according to claim 1, characterized in that, The sealing ring (7) has a cushioning cotton (10) at the end away from the mating groove (8).

4. The membrane filter structure according to claim 1, characterized in that, The outer periphery of both ends of the metal frame (2) is provided with collars (11). One end of the metal frame (2) is sleeved and fixed to the inner wall of the top cover (1) with the collar (11), and the other end of the metal frame (2) is sleeved and fixed to the inner wall of the base (4) with the collar (11).

5. The membrane filter structure according to claim 4, characterized in that, Multiple connecting plates (12) are circumferentially and evenly connected between the collar (11) and the metal frame (2). The inner wall of the top cover (1) is provided with a first connecting groove (13) for the connecting plate (12) to be inserted, and the inner wall of the base (4) is provided with a second connecting groove (14) for the connecting plate (12) to be inserted.

6. The membrane filter structure according to claim 4, characterized in that, Fixing screws (18) are respectively attached to the inner sidewalls at both ends of the metal frame (2). One end of the fixing screw (18) passes through the metal frame (2), the top cover (1) and the collar (11) in sequence. One end of the fixing screw (18) is threaded into the collar (11).

7. A membrane filter element structure according to claim 6, characterized in that... One end of the fixing screw (18) is pressed against the sealing ring (7), causing the outer wall of the sealing ring (7) to abut against the inner wall of the first embedding groove (5) or the second embedding groove (6).

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