Air filtering device arranged in pipeline and convenient for replacing filter element

Abstract

The utility model relates to the technical field of air filtration, in particular to an air filter device built in a pipeline and convenient to replace a filter element, which comprises an air filter cartridge, clamping pieces and keel rods, an air filter bag is arranged in the air filter cartridge, the inner side of the air filter bag is fixedly connected with the four clamping pieces, the bottom of the air filter bag is provided with four limiting holes, and the keel rods are fixedly connected with the clamping pieces. Four keel rods are arranged in the air filter bag, the clamping pieces are clamped with the keel rods, two keel rings are fixedly connected to the outer sides of the four keel rods, and a locking mechanism is arranged on the air filter cartridge; the keel rods penetrate through the limiting holes to fix the bottom of the air filter bag, and the clamping pieces on the inner side of the air filter bag are in clamping fit with the keel rods, so that the top and the bottom of the air filter bag are doubly positioned; therefore, when the air filter bag is impacted by compressed air, the top and the bottom of the air filter bag do not generate displacement deviation in opposite directions, and the filter bag is effectively prevented from being twisted.

Description

Technical Field

[0001] This utility model relates to the field of air filtration technology, and in particular to an air filtration device built into a pipe for easy replacement of the filter element. Background Technology

[0002] The air filtration device in the mixing machine system is mainly used to purify the compressed air entering the air circuit system to ensure the efficient and stable operation of the equipment. Its core function is to filter out dust, particulate matter and liquid impurities in the air through mechanisms such as physical interception, inertial collision and diffusion effect, so as to prevent pollutants from entering the cylinder, solenoid valve and other key components and causing wear or blockage.

[0003] Common air filtration devices with built-in ducts for easy filter replacement only include quick-release filter cartridges, allowing for rapid replacement or maintenance. However, they lack anti-filter bag twisting features. This can lead to a situation where, when compressed air flows through the filter cartridge, the airflow exerts an impact force on the filter bag. This continuous airflow disturbance can cause the top and bottom of the filter bag to deflect in opposite directions, resulting in twisting of the middle area of ​​the filter bag. In severe cases, this can cause localized rupture and damage to the filter bag, affecting the filtration effect.

[0004] Therefore, in response to the lack of anti-filter bag twisting function, continuous airflow disturbance can cause the top and bottom of the filter bag to deflect in opposite directions, which in turn causes the middle area of ​​the filter bag to twist, resulting in a problem that affects the filtration effect. An air filtration device that is built into the pipeline for easy replacement of the filter element can be designed. Utility Model Content

[0005] To overcome the lack of anti-filter bag twisting function, continuous airflow disturbance can cause the top and bottom of the filter bag to deflect in opposite directions, which in turn causes the middle area of ​​the filter bag to twist, resulting in problems that affect the filtration effect.

[0006] The technical solution of this utility model is as follows: an air filtration device built into a pipeline for easy replacement of the filter element, including an air filter cartridge, snap-fit ​​parts, and keel rods. An air filter bag is provided inside the air filter cartridge. Four snap-fit ​​parts are fixedly connected to the inner side of the air filter bag. Four limiting holes are opened at the bottom of the air filter bag. Four keel rods are provided inside the air filter bag. The snap-fit ​​parts engage with the keel rods. Two keel rings are fixedly connected to the outer side of the four keel rods. A locking mechanism is provided on the air filter cartridge to lock the filter element inside the air filter cartridge. A positioning mechanism is provided on the air filter cartridge to limit the position of the keel rods.

[0007] Preferably, the bottom of the air filter bag is fixed by passing the keel rod through the limiting hole, and the snap fastener on the inside of the air filter bag forms a snap-fit ​​with the keel rod, thereby providing dual positioning of the top and bottom of the air filter bag. This ensures that the top and bottom of the air filter bag will not have opposite displacement deviations when subjected to compressed air impact, thus avoiding the phenomenon of entanglement and twisting in the middle area of ​​the air filter bag and effectively achieving the function of preventing filter bag deformation.

[0008] Preferably, the locking mechanism includes a cap assembly and a docking assembly. The cap assembly is used to prevent the filter element from detaching from the air filter cartridge, and the docking assembly is used to connect to the pipeline.

[0009] Preferably, the sealing assembly includes a positioning cover and a clamp; the top of the air filter cartridge is provided with a positioning cover, and the air filter cartridge and the positioning cover are fixedly connected to the outside of the clamp.

[0010] Preferably, the docking assembly includes a venting groove and a connecting flange; the top of the positioning cover has a venting groove, and the bottom of the air filter cartridge is fixedly connected to the connecting flange.

[0011] Preferably, the positioning mechanism includes a lower keel positioning component and an upper keel positioning component. The lower keel positioning component is used to limit the position of the bottom end of the keel rod, and the upper keel positioning component is used to limit the position of the top end of the keel rod.

[0012] Preferably, the lower keel positioning assembly includes a lower positioning ring and lower positioning holes; the lower positioning ring is fixedly connected to the inner side of the air filter cartridge, and four lower positioning holes are opened on the top of the lower positioning ring; the bottom end of the keel rod passes through the limiting hole and is inserted into the interior of the lower positioning hole.

[0013] Preferably, the upper keel positioning assembly includes an upper positioning ring and upper positioning holes. The bottom of the positioning cover is fixedly connected to the upper positioning ring, and the bottom of the upper positioning ring has four upper positioning holes. The top of the keel rod is inserted into the interior of the upper positioning holes.

[0014] The beneficial effects of this utility model are:

[0015] This structure achieves dual positioning of the top and bottom of the air filter bag through the synergistic action of the keel rod, limiting holes, and snap-fit ​​components. This effectively ensures that the filter bag maintains consistent overall deformation under the impact of compressed air, avoids displacement deviation in opposite directions between the top and bottom due to differences in force, thereby eliminating the entanglement and twisting phenomenon caused by stress concentration in the middle area. This significantly improves the structural stability and fatigue resistance of the filter bag, extends its service life, and ensures the continuous and efficient operation of the filtration system. Attached Figure Description

[0016] Figure 1 The diagram shown is a schematic representation of the overall structure of this utility model.

[0017] Figure 2 The diagram shown is a cross-sectional view of the air filter cartridge of this utility model.

[0018] Figure 3 The diagram shown is a bottom-view exploded view of the positioning cover of this utility model.

[0019] Figure 4 The diagram shown is a schematic representation of the keel structure of this utility model.

[0020] Figure 5 The diagram shown is a schematic representation of the air filter bag structure of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Air filter cartridge; 11. Air filter bag; 12. Clip-on component; 13. Limiting hole; 14. Keel rod; 15. Keel ring; 211. Positioning cover; 212. Clamp; 221. Vent groove; 222. Connecting flange; 311. Lower positioning ring; 312. Lower positioning hole; 321. Upper positioning ring; 322. Upper positioning hole. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please see Figures 1-5 This utility model provides an embodiment of an air filtration device that is built into a pipe for easy filter replacement. It includes an air filter cartridge 1, snap-fit ​​components 12, and support rods 14. An air filter bag 11 is disposed inside the air filter cartridge 1. Four snap-fit ​​components 12 are fixedly connected to the inner side of the air filter bag 11. Four limiting holes 13 are opened at the bottom of the air filter bag 11. Four support rods 14 are disposed inside the air filter bag 11. The snap-fit ​​components 12 engage with the support rods 14. Two support rings 15 are fixedly connected to the outer sides of the four support rods 14. A locking mechanism is provided on the air filter cartridge 1 for locking the air... The filter element inside the filter cartridge 1 is locked. The air filter cartridge 1 is equipped with a positioning mechanism, which is used to limit the position of the keel. The keel rod 14 passes through the limiting hole 13 to limit the position of the bottom of the air filter bag 11. The snap fastener 12 on the inside of the air filter bag 11 engages with the keel rod 14, thereby fixing the position of the top and bottom of the air filter bag 11. This prevents the top and bottom of the air filter bag 11 from deflecting in opposite directions when blown by compressed air, thus preventing the middle part of the air filter bag 11 from twisting together and achieving the function of preventing filter bag twisting.

[0024] Please see Figures 2-5In this embodiment, the locking mechanism includes a cover assembly and a docking assembly. The cover assembly is used to prevent the filter element from detaching from the air filter cartridge 1, and the docking assembly is used to connect to the pipeline. The cover assembly and the docking assembly are combined to form a complete locking mechanism. The two cooperate with each other to block the filter element structure and connect to the pipeline. The cover assembly includes a positioning cover 211 and a clamp 212. The top of the air filter cartridge 1 is provided with a positioning cover 211, and the outside of the air filter cartridge 1 and the positioning cover 211 are fixedly connected with the clamp 212. The positioning cover 211 and the air filter cartridge 1 are fixed together by the clamp 212. The positioning cover 211 blocks the filter element structure inside the air filter cartridge 1. The docking assembly includes a venting groove 221 and a connecting flange 222. The top of the positioning cover 211 is provided with a venting groove 221, and the bottom of the air filter cartridge 1 is fixedly connected with the connecting flange 222. The connecting flange 222 is fixedly connected to the pipeline in the mixing machine system by bolts.

[0025] Please see Figures 1-5 In this embodiment, the positioning mechanism includes a lower keel positioning component and an upper keel positioning component. The lower keel positioning component is used to limit the position of the bottom end of the keel rod 14, and the upper keel positioning component is used to limit the position of the top end of the keel rod 14. The lower keel positioning component and the upper keel positioning component together form a complete positioning mechanism, which cooperate with each other to limit the position of the keel. The lower keel positioning component includes a lower positioning ring 311 and lower positioning holes 312. The lower positioning ring 311 is fixedly connected to the inner side of the air filter 1. The top of the lower positioning ring 311 has four lower positioning holes 312. The bottom of the keel rod 14 The end of the keel rod 14 passes through the limiting hole 13 and is inserted into the lower positioning hole 312. After the bottom end of the keel rod 14 is inserted into the lower positioning hole 312, the position of the bottom end of the keel rod 14 is limited by the lower positioning ring 311. The upper keel locking assembly includes an upper positioning ring 321 and an upper positioning hole 322. The bottom of the positioning cover 211 is fixedly connected to the upper positioning ring 321. The bottom of the upper positioning ring 321 has four upper positioning holes 322. The top end of the keel rod 14 is inserted into the upper positioning hole 322. After the top end of the keel rod 14 is inserted into the upper positioning hole 322, the position of the top end of the keel rod 14 is limited by the upper positioning ring 321.

[0026] During operation, the connecting flange 222 is first fixedly connected to the pipeline of the mixing machine system using bolts. When compressed air enters the air filter cartridge 1, it is filtered by the air filter bag 11 to remove impurities. At the same time, the bottom position of the air filter bag 11 is fixed by the keel rod 14 passing through the limiting hole 13. The snap-fit ​​part 12 on the inner side of the air filter bag 11 and the keel rod 14 form a snap-fit ​​engagement, thereby achieving dual positioning of the top and bottom areas of the air filter bag 11. This ensures that the top and bottom of the air filter bag 11 will not produce relative opposite displacement when subjected to the impact of compressed air, thus avoiding the phenomenon of entanglement and twisting in the middle area of ​​the air filter bag 11. When it is necessary to clean or replace the air filter bag 11, simply open the clamp 212, then remove the positioning cover 211, and finally the keel assembly together with the air filter bag 11 can be pulled out of the air filter cartridge 1.

[0027] Through the above steps, the bottom position of the air filter bag 11 is fixed by the keel rod 14 passing through the limiting hole 13. The snap-fit ​​part 12 on the inner side of the air filter bag 11 and the keel rod 14 form a snap-fit ​​engagement, thereby doubly positioning the top and bottom positions of the air filter bag 11. This ensures that the top and bottom of the air filter bag 11 will not have opposite displacement deviations when subjected to compressed air impact, thus avoiding the phenomenon of entanglement and twisting in the middle area of ​​the air filter bag 11. This achieves the function of preventing filter bag twisting, which solves the problem of common air filtration devices built into pipes for easy filter replacement. These devices only have the function of quick filter replacement, which allows for quick replacement or maintenance of the filter element, but lack the function of preventing filter bag twisting. This can easily lead to continuous airflow disturbances that cause the top and bottom of the filter bag to deflect in opposite directions, resulting in twisting in the middle area of ​​the filter bag and causing localized cracking and damage to the filter bag.

Claims

1. An air filtration device built into a duct for easy filter replacement, comprising an air filter cartridge (1); characterized in that: It also includes a snap-fit ​​component (12) and a keel rod (14). An air filter bag (11) is provided inside the air filter cartridge (1). Four snap-fit ​​components (12) are fixedly connected to the inner side of the air filter bag (11). Four limiting holes (13) are opened at the bottom of the air filter bag (11). Four keel rods (14) are provided inside the air filter bag (11). The snap-fit ​​component (12) engages with the keel rod (14). Two keel rings (15) are fixedly connected to the outer side of the four keel rods (14). A locking mechanism is provided on the air filter cartridge (1). The locking mechanism is used to lock the filter element inside the air filter cartridge (1). A positioning mechanism is provided on the air filter cartridge (1). The positioning mechanism is used to limit the position of the keel.

2. An air filtration device built into a pipeline for easy filter element replacement according to claim 1, characterized in that: The locking mechanism includes a cap assembly and a docking assembly. The cap assembly is used to prevent the filter element from detaching from the air filter cartridge (1), and the docking assembly is used to connect to the pipeline.

3. An air filtration device built into a pipeline for easy filter element replacement according to claim 2, characterized in that: The sealing assembly includes a positioning cover (211) and a clamp (212); the top of the air filter cartridge (1) is provided with a positioning cover (211), and the outside of the air filter cartridge (1) and the positioning cover (211) are fixedly connected with clamps (212).

4. An air filtration device built into a pipeline for easy filter element replacement according to claim 3, characterized in that: The docking assembly includes a venting groove (221) and a connecting flange (222); the top of the positioning cover (211) is provided with a venting groove (221), and the bottom of the air filter cartridge (1) is fixedly connected with a connecting flange (222).

5. An air filtration device built into a pipeline for easy filter element replacement according to claim 4, characterized in that: The positioning mechanism includes a lower keel positioning component and an upper keel positioning component. The lower keel positioning component is used to limit the position of the bottom end of the keel rod (14), and the upper keel positioning component is used to limit the position of the top end of the keel rod (14).

6. An air filtration device built into a pipeline for easy filter element replacement according to claim 5, characterized in that: The lower part of the keel includes a lower positioning ring (311) and a lower positioning hole (312); the lower positioning ring (311) is fixedly connected to the inner side of the air filter (1), and four lower positioning holes (312) are opened on the top of the lower positioning ring (311). The bottom end of the keel rod (14) passes through the limiting hole (13) and is inserted into the interior of the lower positioning hole (312).

7. An air filtration device built into a pipeline for easy filter element replacement according to claim 6, characterized in that: The upper keel positioning assembly includes an upper positioning ring (321) and an upper positioning hole (322). The bottom of the positioning cover (211) is fixedly connected to the upper positioning ring (321). The bottom of the upper positioning ring (321) has four upper positioning holes (322). The top of the keel rod (14) is inserted into the interior of the upper positioning hole (322).

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