Filter cartridge structure of bag filter convenient for filter pressing of compressed air

Abstract

The utility model discloses a filter cartridge structure of a bag filter convenient for compressed air filter pressing, which comprises a bag filter main body, an annular support plate is concentrically and coaxially arranged in the bag filter main body, an annular mounting groove is concentrically and coaxially arranged on one side of the inner diameter of the annular support plate, a filter cartridge is embedded in the annular support plate, and the filter cartridge is arranged in the annular mounting groove. The top end of the filter cartridge is embedded in the annular mounting groove, the cartridge wall of the filter cartridge is smooth, and a plurality of filter holes are uniformly formed in the bottom of the filter cartridge; a sealing gasket is embedded in the annular mounting groove, an annular cover plate is embedded in the annular mounting groove above the sealing gasket, the cover plate, the sealing gasket and the top end of the filter cartridge are in limiting fit, a plurality of fastening assemblies are detachably arranged on the side, away from the annular mounting groove, of the annular supporting plate, and the fastening assemblies are arranged around a shaft at equal intervals; the side, away from the annular mounting groove, of each fastening assembly is detachably and fixedly matched with the annular supporting plate, the side, close to the annular mounting groove, of each fastening assembly is in limiting fit with the cover plate, the sealing performance is good, and compressed air filter pressing is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of air pressure filtration equipment, in particular to the filter cartridge structure of a bag filter facilitating compressed air pressure filtration. Background Art

[0002] A bag filter filters out impurities in a liquid or gas by utilizing the fine pores in the filter bag. Compared with other filters, it has multiple advantages:

[0003] 1. Good filtration effect: The fine pores can filter out smaller impurities, making the material purer and safer.

[0004] 2. Long service life: The filter bag can be used for a relatively long time and is very easy to remove and clean.

[0005] 3. Simple operation: It is very easy to use and replace, and can even be operated by a single person.

[0006] Disadvantages:

[0007] 1. The filter cartridge is sealed in a bayonet manner, and the sealing effect is not good;

[0008] 2. There are many holes in the upper part of the filter cartridge. After using air pressure filtration, the material is compressed and its volume decreases, and the filter holes at the top of the filter cartridge are exposed, causing air to leak and making it impossible to perform pressure filtration on the bottom material. Summary of the Utility Model

[0009] The utility model provides a filter cartridge structure of a bag filter facilitating compressed air pressure filtration, aiming to solve the problems that the filter cartridge of the bag filter has poor sealing effect due to snap-fastening installation and poor pressure filtration effect due to air leakage caused by many holes in the upper part of the filter cartridge.

[0010] To solve the above technical problems, the technical solution adopted by the utility model is:

[0011] A filter cartridge structure of a bag filter facilitating compressed air pressure filtration, including a bag filter main body. An annular support plate is coaxially arranged concentrically inside the bag filter main body. An annular installation groove is coaxially arranged on one side of the inner diameter of the annular support plate. The annular support plate is embedded with a filter cartridge. The top end of the filter cartridge is embedded in the annular installation groove, and the outer edge of the top of the filter cartridge forms a limit fit with the annular installation groove. The wall of the filter cartridge is smooth, and a plurality of filter holes are evenly arranged at the bottom of the filter cartridge;

[0012] A sealing washer is embedded in the annular mounting groove above the filter cartridge, and an annular cover plate is embedded in the annular mounting groove above the sealing washer. The cover plate forms a limiting fit with the sealing washer and the top end of the filter cartridge. A plurality of fastening components are detachably arranged on the side of the annular support plate away from the annular mounting groove. The plurality of fastening components are arranged at equal intervals around the axis. Each fastening component is detachably and fixedly fitted with the annular support plate on the side away from the annular mounting groove, and each fastening component is in limiting fit with the cover plate on the side close to the annular mounting groove.

[0013] Preferably, the outer wall of the annular support plate is fixedly welded and fitted with the inner wall of the bag filter body.

[0014] More preferably, the cover plate includes a concentric and coaxial annular horizontal part and an annular vertical part, and the horizontal part and the vertical part cooperate to form a "T" - shaped structure. The horizontal part is embedded in the annular mounting groove and abuts above the sealing washer, and the vertical part extends downward and is embedded in the filter cartridge.

[0015] Furthermore, the horizontal part and the vertical part are integrally formed.

[0016] Even further, the sealing washer is clamped between the outer edge of the top of the filter cartridge and the horizontal part. The outer side of the sealing washer is closely attached to the annular mounting groove, and the inner diameter of the sealing washer is greater than the opening radius of the filter cartridge. The outer side of the horizontal part is closely attached to the annular mounting groove, and the inner diameter of the horizontal part is less than the opening radius of the filter cartridge.

[0017] Specifically, the filter cartridge, the sealing washer, the horizontal part and the vertical part cooperate to form a filter bag mounting groove for mounting the filter bag.

[0018] More specifically, the fastening component includes a fixing block. The fixing block includes a fixing part and an extending part. The fixing part abuts on the annular support plate, and the fixing part forms a detachable fixed fit with the annular support plate through a first fastening screw. The extending part is located above the horizontal part of the cover plate, and a second fastening screw is threadedly installed on the extending part. The end of the second fastening screw penetrates through the extending part and forms a pressing fit with the horizontal part.

[0019] In detail, the fixing part and the extending part are integrally formed.

[0020] Even more detailedly, the fixing part is provided with a first screw hole, and the annular support plate is provided with a first screw hole corresponding to the first screw hole of the fixing part one by one. When the first screw hole on the annular support plate coincides with the corresponding first screw hole of the fixing part, a threaded fixed fit is formed through the first fastening screw;

[0021] The extending part is provided with a second screw hole, and a second fastening screw is threadedly installed in the second screw hole.

[0022] The beneficial effects of the utility model:

[0023] 1. The utility model ensures the effect of pressing and fixing through the fixing component, and further strengthens the sealing effect of the filter cartridge installation through the cover plate and the sealing gasket;

[0024] 2. The utility model only arranges filter holes at the bottom of the filter cartridge to ensure the pressure filtration effect of the bottom materials and avoid air leakage at the upper part of the filter cartridge after the volume of the materials shrinks. Description of the Drawings

[0025] Figure 1 is the schematic diagram of the installation appearance of the utility model;

[0026] Figure 2 is the schematic diagram of the top of the filter cartridge installation of the utility model;

[0027] Figure 3 is the schematic diagram of the bottom of the filter cartridge installation of the utility model;

[0028] Figure 4 is the schematic diagram of the installation at the annular support plate of the utility model;

[0029] Figure 5 is the schematic diagram of the disassembly at the annular support plate of the utility model;

[0030] Figure 6 is the schematic cross-sectional view at the fixing component of the utility model;

[0031] In the figure: 1. Bag filter main body; 2. Annular support plate; 3. Annular installation groove; 4. Filter cartridge; 5. Filter hole; 6. Sealing gasket;

[0032] 7. Cover plate; 701. Horizontal part; 702. Vertical part;

[0033] 8. Filter bag installation groove;

[0034] 9. Fastening component; 901. Fixed block; 9011. Fixed part; 9012. Extension part; 902. First screw hole; 903. First fastening screw; 904. Second screw hole; 905. Second fastening screw. Detailed Embodiment

[0035] As follows, the embodiments will be further described with reference to the drawings.

[0036] As Figures 1 to 6As shown, as a preferred Embodiment 1, the filter cartridge structure of a bag filter facilitating compressed air pressure filtration includes a bag filter main body 1. Concentrically and coaxially arranged inside the bag filter main body 1 is an annular support plate 2. On one side of the inner diameter of the annular support plate 2, an annular installation groove 3 is concentrically and coaxially arranged. An filter cartridge 4 is embedded in the annular support plate 2. The top end of the filter cartridge 4 is embedded in the annular installation groove 3, and the outer edge of the top of the filter cartridge 4 forms a limit fit with the annular installation groove 3. The wall of the filter cartridge 4 is smooth, and a number of filter holes 5 are evenly arranged at the bottom of the filter cartridge 4;

[0037] An annular sealing gasket 6 is embedded in the annular installation groove 3 above the filter cartridge 4. An annular cover plate 7 is embedded in the annular installation groove 3 above the sealing gasket 6, and the cover plate 7 forms a limit fit with the sealing gasket 6 and the top end of the filter cartridge 4. On the side of the annular support plate 2 away from the annular installation groove 3, a number of fastening components 9 are detachably arranged. The number of the fastening components 9 is arranged at equal intervals around the axis. On the side of each fastening component 9 away from the annular installation groove 3, it is detachably and fixedly fitted with the annular support plate 2. On the side of each fastening component 9 close to the annular installation groove 3, it is in limit fit with the cover plate 7.

[0038] Embodiment 1 provides a filter cartridge structure of a bag filter facilitating compressed air pressure filtration. This structure uses the annular support plate 2 as a load-bearing structure, and an annular installation groove 3 is designed at its inner circle for installing the filter cartridge 4. After the filter cartridge 4 is embedded into the opening of the annular support plate 2, the outer edge of the filter cartridge 4 is clamped and limited in the annular installation groove 3. Then, the sealing gasket 6 is placed, and the filter bag is placed. The edge of the filter bag is embedded into the inner circle of the sealing gasket 6. Finally, the cover plate 7 is embedded, and the fastening component 9 presses the cover plate 7. The horizontal part 701 of the cover plate 7 presses downward in the vertical direction, and the vertical part 702 limits the filter bag and the top inner wall of the filter cartridge 4, ensuring the sealing performance at the installation position of the filter cartridge 4 and the filter bag and improving the sealing performance;

[0039] The surface of the filter cartridge 4 is smooth, and only filter holes are arranged at the bottom, which is convenient for pressure filtration using compressed air, preventing the loss of compressed air from the side wall openings and enabling the pressure filtration operation on the bottom.

[0040] As a preferred Embodiment 2, the outer wall of the annular support plate 2 is fixedly welded and fitted with the inner wall of the bag filter main body 1, ensuring the fixing strength of the annular support plate 2.

[0041] As a preferred Embodiment 3, the installation position of the annular support plate 2 is lower than the feed inlet of the bag filter main body 1, ensuring that the material smoothly enters the filter bag.

[0042] As a preferred embodiment 4, the cover plate 7 includes a concentric and coaxial annular horizontal portion 701 and an annular vertical portion 702. The horizontal portion 701 and the vertical portion 702 cooperate to form a "T" - shaped structure. The horizontal portion 701 is embedded in the annular installation groove 3 and is received above the sealing gasket 6, and the vertical portion 702 extends downward and is embedded in the filter cartridge 4.

[0043] The horizontal portion 701 is used to press the filter cartridge 4 tightly in the annular installation groove 3 and cooperate with the filter cartridge 4 to clamp and press the filter bag. During this process, the pressed sealing gasket 6 maintains the installation tightness; the vertical portion 702 is used to cooperate with the filter cartridge 4 to clamp the filter bag and ensure the fixed installation of the filter bag.

[0044] As a preferred embodiment 5, the horizontal portion 701 and the vertical portion 702 are integrally formed, which is convenient for use and installation.

[0045] As a preferred embodiment 6, the sealing gasket 6 is clamped between the outer edge of the top of the filter cartridge 4 and the horizontal portion 701. The outer side of the sealing gasket 6 is closely attached to the annular installation groove 3, and the inner diameter of the sealing gasket 6 is larger than the opening radius of the filter cartridge 4. The outer side of the horizontal portion 701 is closely attached to the annular installation groove 3, and the inner diameter of the horizontal portion 701 is smaller than the opening radius of the filter cartridge 4, which is convenient for leaving an installation position for the filter bag.

[0046] As a preferred embodiment 7, the filter cartridge 4, the sealing gasket 6, the horizontal portion 701 and the vertical portion 702 cooperate to form a filter bag installation groove 8 for installing the filter bag, which ensures the installation of the filter bag.

[0047] As a preferred embodiment 8, the fastening assembly 9 includes a fixing block 901. The fixing block 901 includes a fixing portion 9011 and an extending portion 9012. The fixing portion 9011 is received on the annular support plate 2, and the fixing portion 9011 forms a detachable fixed cooperation with the annular support plate 2 through the first fastening screw 903 to ensure the fixation of the fixing portion 9011 on the annular support plate 2. The extending portion 9012 is located above the horizontal portion 701 of the cover plate 7. A second fastening screw 905 is threadedly installed on the extending portion 9012. The end of the second fastening screw 905 passes through the extending portion 9012 and forms a pressing cooperation with the horizontal portion 701 to ensure the pressing of the horizontal portion 701. Through the fixation of the fixing portion 9011, the pressing also forms a fixation on the horizontal portion 701, ensuring the stability of the installation of the filter cartridge 4 and the filter bag.

[0048] As a preferred embodiment 9, the fixing portion 9011 and the extending portion 9012 are integrally formed, which is convenient for fixation and installation.

[0049] As a preferred embodiment 10, the thickness of the fixing portion 9011 is greater than that of the extending portion 9012, and the top of the extending portion 9012 is flush with the top of the fixing portion 9011, so that there is a gap between the extending portion 9012 and the horizontal portion 701, facilitating pressing and fixing.

[0050] As a preferred embodiment 11, a first screw hole 902 is provided on the fixing portion 9011, and a first screw hole 902 corresponding to the first screw hole 902 of the fixing portion 9011 is provided on the annular support plate 2. When the first screw hole 902 on the annular support plate 2 coincides with the corresponding first screw hole 902 of the fixing portion 9011, a threaded fixing fit is formed through the first fastening screw 903;

[0051] A second screw hole 904 is provided on the extending portion 9012, and a second fastening screw 905 is threadedly installed in the second screw hole 904.

[0052] A plurality of first screw holes 902 are provided on the side of the annular support plate 2 away from the annular installation groove 3, and the plurality of first screw holes 902 are arranged at equal intervals around the axis. Each first screw hole 902 on the annular support plate 2 corresponds to a fixing component 9. When the first screw hole 902 on the annular support plate 2 coincides with the corresponding first screw hole 902 of the fixing portion 9011, the same first fastening screw 903 is inserted, and a threaded fixing fit is formed through the first fastening screw 903. At this time, the position of the fixing block 901 is determined. By screwing the second fastening screw 905 tightly into the second screw hole 904 of the extending portion 9012, the bottom of the second fastening screw 905 forms a pressing fit on the horizontal portion 701.

[0053] As a preferred embodiment 12, the first fastening screw 903 can be selected as an internal hexagonal socket head cap screw, and the second fastening screw 905 can be selected as an internal hexagonal flat end set screw.

[0054] The working principle of the present utility model:

[0055] The present utility model provides a filter cartridge structure of a bag filter facilitating compressed air pressure filtration. This structure uses the annular support plate 2 as a load-bearing structure, and an annular installation groove 3 is designed at its inner circle for installing the filter cartridge 4. After the filter cartridge 4 is inserted into the opening of the annular support plate 2, the outer edge of the filter cartridge 4 is clamped and limited in the annular installation groove 3. Then, a sealing washer 6 is placed, and a filter bag is placed. The edge of the filter bag is inserted into the inner circle of the sealing washer 6. Finally, a cover plate 7 is inserted, and the fastening component 9 presses the cover plate 7. The horizontal portion 701 of the cover plate 7 presses downward in the vertical direction, and the vertical portion 702 limits the filter bag and the top inner wall of the filter cartridge 4, ensuring the sealing performance at the installation position of the filter cartridge 4 and the filter bag and improving the sealing performance;

[0056] The surface of the filter cartridge 4 is smooth, and only filter holes are arranged at the bottom, which facilitates pressure filtration using compressed air, prevents the loss of compressed air from the side wall openings, and enables pressure filtration operation on the bottom.

Claims

1. A filter cartridge structure of a bag filter for compressed air filtration, comprising a bag filter body (1), wherein an annular support plate (2) is coaxially arranged inside the bag filter body (1), characterized in that: An annular mounting groove (3) is coaxially and concentrically provided on one side of the inner diameter of the annular support plate (2), a filter cartridge (4) is embedded in the annular support plate (2), the top end of the filter cartridge (4) is embedded in the annular mounting groove (3), and the top outer edge of the filter cartridge (4) forms a limited fit with the annular mounting groove (3), the wall of the filter cartridge (4) is smooth, and a plurality of filter holes (5) are evenly provided on the bottom of the filter cartridge (4); A sealing gasket (6) is embedded in the annular mounting groove (3) located above the filter cartridge (4); an annular cover plate (7) is embedded in the annular mounting groove (3) located above the sealing gasket (6); and the cover plate (7) forms a limiting fit with the sealing gasket (6) and the top end of the filter cartridge (4); a plurality of fastening components (9) are detachably provided on the side of the annular support plate (2) away from the annular mounting groove (3); the plurality of fastening components (9) are arranged at equal intervals around the axis; the side of each fastening component (9) away from the annular mounting groove (3) is detachably fixedly fitted with the annular support plate (2); and the side of each fastening component (9) close to the annular mounting groove (3) is limitedly fitted with the cover plate (7).

2. The filter cartridge structure of the bag filter for compressed air filtration according to claim 1, characterized in that: The outer wall of the annular support plate (2) is welded and fixedly matched with the inner wall of the bag filter body (1).

3. The filter cartridge structure of the bag filter for compressed air filtration according to claim 2 is characterized in that: The cover plate (7) comprises an annular horizontal portion (701) and an annular vertical portion (702) which are arranged concentrically and coaxially, and the horizontal portion (701) and the vertical portion (702) cooperate to form a "T"-shaped structure, the horizontal portion (701) being embedded in the annular mounting groove (3) and supported above the sealing gasket (6), and the vertical portion (702) extending downward and embedded in the filter cartridge (4).

4. The filter cartridge structure of the bag filter for compressed air filtration according to claim 3 is characterized in that: The horizontal portion (701) and the vertical portion (702) are integrally formed.

5. The filter cartridge structure of the bag filter for compressed air filtration according to claim 4 is characterized in that: The sealing gasket (6) is clamped between the top outer edge of the filter cartridge (4) and the horizontal portion (701); the outer side of the sealing gasket (6) is in close contact with the annular mounting groove (3), and the inner diameter of the sealing gasket (6) is larger than the opening radius of the filter cartridge (4); the outer side of the horizontal portion (701) is in close contact with the annular mounting groove (3), and the inner diameter of the horizontal portion (701) is smaller than the opening radius of the filter cartridge (4).

6. The filter cartridge structure of the bag filter for compressed air filtration according to claim 5, characterized in that: The filter cartridge (4), the sealing gasket (6), the horizontal portion (701) and the vertical portion (702) cooperate to form a filter bag installation groove (8) for installing a filter bag.

7. The filter cartridge structure of the bag filter for compressed air filtration according to claim 6, characterized in that: The fastening assembly (9) comprises a fixing block (901), the fixing block (901) comprising a fixing portion (9011) and an extending portion (9012), the fixing portion (9011) being supported on the annular support plate (2), and the fixing portion (9011) being detachably fixedly matched with the annular support plate (2) via a first fastening screw (903), the extending portion (9012) being located above the horizontal portion (701) of the cover plate (7), a second fastening screw (905) being threadedly mounted on the extending portion (9012), and a distal end of the second fastening screw (905) passing through the extending portion (9012) and forming a press fit with the horizontal portion (701).

8. The filter cartridge structure of the bag filter for compressed air filtration according to claim 7, characterized in that: The fixing portion (9011) and the extending portion (9012) are integrally formed.

9. The filter cartridge structure of the bag filter for compressed air filtration according to claim 8, characterized in that: The fixing portion (9011) is provided with a first screw hole (902), and the annular support plate (2) is provided with a first screw hole (902) corresponding to the first screw hole (902) of the fixing portion (9011) one by one, and when the first screw hole (902) on the annular support plate (2) overlaps with the first screw hole (902) of the corresponding fixing portion (9011), a threaded fixing fit is formed by a first fastening screw (903); The extension portion (9012) is provided with a second screw hole (904), and a second fastening screw (905) is installed in the internal thread of the second screw hole (904).

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