External air inlet filtering device of air compressor

Abstract

The utility model discloses an external air inlet filtering device of an air compressor, which relates to the field of air filtering devices and comprises a shell component, a filter element and a telescopic connecting component. The telescopic connecting assembly comprises a telescopic communicating unit and a telescopic guiding unit. The telescopic communication unit is used for achieving connection and communication of the filter element and the air outlet, and the telescopic communication unit is moved and unfolded to conduct wall scraping operation on the inner wall of the air outlet. By arranging the telescopic connecting assembly, the filter element is communicated with the air outlet, meanwhile, the annular moving seat can be driven to move when the filter element is detached, the annular moving seat can scrape the inner wall of the filter cartridge and push impurities out of the filter cartridge, impurities are prevented from remaining in the filter cartridge, the cleaning quality and efficiency are improved, and meanwhile, the filter cartridge is convenient to clean. Impurities are effectively prevented from entering the air inlet of the air compressor through the air outlet, and stable use of the air compressor is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of air filtration devices, specifically an external air intake filtration device for an air compressor. Background Technology

[0002] External filters for air compressors are an important component of compressed air systems. They are mainly used to remove contaminants from the air (such as dust, oil mist, moisture, microorganisms, etc.) to ensure the cleanliness of compressed air, thereby protecting downstream equipment and meeting specific process requirements.

[0003] Existing air compressors have a pre-filter installed at the air inlet to filter large particulate impurities and some moisture in the air. The filter element needs to be replaced regularly. However, when the filter element is removed, there are residual impurities inside the filter cartridge. These impurities can easily enter the air compressor inlet through the exposed air outlet of the filter cartridge, which is not conducive to the stable operation of the air compressor in the later stage. Based on this, an external air intake filter device for air compressors is provided. Utility Model Content

[0004] The purpose of this utility model is to provide an external air intake filter device for an air compressor in order to solve the problems mentioned above.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an external air intake filter device for an air compressor, comprising an outer shell assembly consisting of a filter cylinder, an air inlet, an air outlet, and a sealing cover, and a filter element. The air inlet is fixed to one side of the outside of the filter cylinder, and the air outlet is fixed to the middle of the top of the filter cylinder. The air inlet and the air outlet are connected to the inner cavity of the filter cylinder. The filter element is installed inside the filter cylinder. The sealing cover is threaded to the bottom of the filter cylinder to provide support for the bottom of the filter element. A telescopic connection assembly is provided inside the filter cylinder to achieve connection and communication between the inner cavity of the filter element and the air outlet.

[0006] The telescopic connection assembly includes a telescopic communication unit and a telescopic guide unit;

[0007] The telescopic connecting unit is used to connect the filter element and the air outlet. The telescopic connecting unit can be moved and unfolded to scrape the inner wall of the air outlet.

[0008] The telescopic guide unit is used to provide guidance and limit the telescopic movement of the telescopic connecting unit.

[0009] As a further embodiment of this utility model: the telescopic connecting unit includes a corrugated connecting pipe and a threaded connecting pipe;

[0010] The bottom end of the air outlet extends into the interior of the filter cylinder and is fixed to the corrugated connecting pipe. The threaded connecting pipe is fixed to the bottom of the corrugated connecting pipe, and the air outlet, the corrugated connecting pipe, and the threaded connecting pipe are connected in sequence.

[0011] The top opening of the filter element is formed with a screw hole, and the filter element is connected to the threaded connecting pipe through the screw hole to achieve communication with the air outlet.

[0012] As a further improvement of this utility model, the telescopic communication unit also includes a ring-shaped movable seat;

[0013] The annular movable seat is fixed to the outside of the threaded connecting pipe, and the outside of the annular movable seat is in contact with the inner wall side of the filter cylinder. The movement of the annular movable seat is used to scrape the inner wall of the filter cylinder.

[0014] As a further embodiment of this utility model: the telescopic guide unit includes a guide rod, a bottom limiting block, and a top limiting block;

[0015] Multiple guide rods are provided, and the multiple guide rods are evenly distributed in a ring and fixed to the top of the inner wall of the filter cylinder and pass through the ring-shaped movable seat. The ring-shaped movable seat is slidably connected to the multiple guide rods.

[0016] The bottom limiting block is fixed to the bottom of the guide rod and is used to limit the downward movement of the annular moving seat;

[0017] The bottom limiting block is fixed to the outside of the guide rod near the top, and is used to limit the upward movement of the annular moving seat.

[0018] As a further improvement of this utility model: the height of the guide rod is greater than the height of the filter cylinder, but less than the overall height of the sealing cover and the filter cylinder;

[0019] The corrugated connecting pipe can be extended to a maximum height greater than the height of the guide rod.

[0020] As a further improvement of this utility model: the inner diameter of the distribution trajectory of the plurality of guide rods matches the outer diameter of the outer shell of the filter element, and the outer diameter of the distribution trajectory of the plurality of guide rods is smaller than the inner diameter of the filter cylinder.

[0021] As a further improvement of this utility model: when the upper surface of the annular moving seat is in contact with the top limiting block, the horizontal height of the lower surface of the annular moving seat is higher than the horizontal height of the air inlet port.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] By setting up a telescopic connection component, the filter element can be connected to the air outlet. When the filter element is removed, the annular moving seat can be moved. The annular moving seat can scrape the inner wall of the filter cylinder and push the impurities to the outside of the filter cylinder. This not only avoids the residue of impurities inside the filter cylinder and improves the cleaning quality and efficiency, but also effectively prevents impurities from entering the air compressor inlet through the air outlet, ensuring the stable operation of the air compressor. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0026] Figure 3 This is a cross-sectional exploded view of the present invention;

[0027] Figure 4 This is another perspective view of the cross-section of this utility model.

[0028] In the diagram: 1. Outer shell assembly; 101. Filter cartridge; 102. Air inlet; 103. Air outlet; 104. Sealing cover; 2. Filter element; 3. Screw hole; 4. Telescopic connection assembly; 401. Corrugated connecting pipe; 402. Threaded connecting pipe; 403. Annular moving seat; 404. Guide rod; 405. Bottom limiting block; 406. Top limiting block. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-4 In this embodiment of the utility model, an external air intake filter device for an air compressor includes an outer shell assembly 1 consisting of a filter cylinder 101, an air inlet 102, an air outlet 103, and a sealing cover 104, and a filter element 2. The air inlet 102 is fixed to one side of the outside of the filter cylinder 101, and the air outlet 103 is fixed to the middle of the top of the filter cylinder 101. The air inlet 102 and the air outlet 103 are connected to the inner cavity of the filter cylinder 101. The filter element 2 is installed inside the filter cylinder 101. The sealing cover 104 is threaded to the bottom of the filter cylinder 101 to provide support for the bottom of the filter element 2. A telescopic connection assembly 4 is provided inside the filter cylinder 101 to realize the connection and conduction between the inner cavity of the filter element 2 and the air outlet 103.

[0031] Telescopic connection component 4 includes a telescopic communication unit and a telescopic guide unit;

[0032] The telescopic connecting unit is used to connect the filter element 2 and the air outlet 103. The telescopic connecting unit can be moved and unfolded to scrape the inner wall of the air outlet 103.

[0033] The telescopic guide unit is used to guide and limit the telescopic movement of the telescopic connecting unit;

[0034] The telescopic connecting unit includes a corrugated connecting pipe 401, a threaded connecting pipe 402, and an annular movable seat 403;

[0035] The bottom end of the air outlet 103 extends into the interior of the filter cartridge 101 and is fixed to the corrugated connecting pipe 401. The threaded connecting pipe 402 is fixed to the bottom of the corrugated connecting pipe 401, and the air outlet 103, the corrugated connecting pipe 401, and the threaded connecting pipe 402 are connected in sequence.

[0036] The top opening of the filter element 2 is formed with a screw hole 3. The filter element 2 is threadedly connected to the threaded connecting pipe 402 through the screw hole 3 to achieve communication with the air outlet 103.

[0037] The annular movable seat 403 is fixed to the outside of the threaded connecting pipe 402, and the outside of the annular movable seat 403 is in contact with the inner wall side of the filter cylinder 101. The annular movable seat 403 is moved to perform a scraping operation on the inner wall of the filter cylinder 101.

[0038] The telescopic guide unit includes a guide rod 404, a bottom limiting block 405, and a top limiting block 406;

[0039] Multiple guide rods 404 are provided, and the multiple guide rods 404 are evenly distributed in a ring and fixed to the top of the inner wall of the filter cylinder 101 and pass through the annular movable seat 403. The annular movable seat 403 is slidably connected to the multiple guide rods 404.

[0040] The bottom limiting block 405 is fixed to the bottom of the guide rod 404 and is used to limit the downward movement of the annular moving seat 403;

[0041] The bottom limiting block 405 is fixed to the outside of the guide rod 404 near the top, and is used to limit the upward movement of the annular moving seat 403;

[0042] When the upper surface of the annular movable seat 403 is in contact with the top limiting block 406, the horizontal height of the lower surface of the annular movable seat 403 is higher than the horizontal height of the port of the air inlet 102.

[0043] In this embodiment, it should be noted that when this filter device is in use, the air outlet 103 is connected to the air inlet of the air compressor through a pipe. External air enters the filter cartridge 101 through the air inlet 102, and after being filtered by the filter element 2, it flows to the air compressor inlet through the channel formed by the central cavity of the filter element 2, the threaded connecting pipe 402, the corrugated connecting pipe 401, and the air outlet 103. This achieves the air filtration operation (it should be noted that the corrugated connecting pipe 401 is in a retracted and folded state at this time).

[0044] When filter element 2 needs to be replaced, the operating steps are as follows:

[0045] First, loosen the sealing cover 104 and separate it from the filter cylinder 101. At this time, the filter element 2 can be contacted and pulled outward. During the outward movement of the filter element 2, the threaded connecting pipe 402 and the annular moving seat 403 can be moved as a whole. The corrugated connecting pipe 401 is stretched and unfolded. During this process, the guide rod 404 provides limit and guidance for the movement of the annular moving seat 403.

[0046] The movement of the annular moving seat 403 can scrape the inside of the filter cylinder 101, causing the impurities remaining inside the filter cylinder 101 to be scraped off and pushed to the outside of the filter cylinder 101. Finally, the annular moving seat 403 contacts the bottom limiting block 405, at which point all the impurities inside the filter cylinder 101 are pushed out.

[0047] Next, loosen the filter element 2 to separate the screw hole 3 from the threaded connecting pipe 402, thus completing the disassembly of the filter element 2. Then, align the new filter element 2 with the threaded connecting pipe 402 and apply pressure to move the filter element 2, the threaded connecting pipe 402, and the annular moving seat 403 back into the filter cylinder 101. When the annular moving seat 403 contacts the bottom limiting block 406, the filter element 2 can be screwed to make the screw hole of the new filter element 2 threadedly connected and fixed with the threaded connecting pipe 402. Finally, install the sealing cover 104. The overall operation is simple and convenient.

[0048] By removing and cleaning the impurities inside the filter cartridge 101, not only are residual impurities avoided, improving cleaning quality and efficiency, but impurities are also effectively prevented from entering the air compressor inlet through the air outlet 103, ensuring stable operation of the air compressor.

[0049] Please refer to this carefully. Figures 2-4 The height of the guide rod 404 is greater than the height of the filter cartridge 101, but less than the overall height of the sealing cover 104 and the filter cartridge 101. The corrugated connecting pipe 401 can be extended to a maximum height greater than the height of the guide rod 404.

[0050] In this embodiment, this structure allows the annular movable seat 403 to be completely moved outside the filter cartridge 101, thereby achieving the effect of completely pushing out the impurities inside the filter cartridge 101.

[0051] Please refer to this carefully. Figures 2-4 The inner diameter of the distribution trajectory of the multiple guide rods 404 matches the outer diameter of the outer shell of the filter element 2, and the outer diameter of the distribution trajectory of the multiple guide rods 404 is smaller than the inner diameter of the filter cylinder 101.

[0052] In this embodiment, multiple guide rods 404 can provide support for the installation of the filter element 2, thereby ensuring the stability of the filter element 2 during use. At the same time, sufficient filtration space can be reserved between the outside of the filter element 2 and the inner diameter of the filter cylinder 101.

[0053] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An air compressor external intake filter device, comprising a shell assembly (1) composed of a filter cartridge (101), an air inlet (102), an air outlet (103), and a blocking cover (104), and a filter core (2), the air inlet (102) is fixed on one side of the outside of the filter cartridge (101), the air outlet (103) is fixed on the top middle of the filter cartridge (101), and the air inlet (102) and the air outlet (103) are in communication with the inner cavity of the filter cartridge (101), the filter core (2) is installed inside the filter cartridge (101), and the blocking cover (104) is threadedly connected to the bottom of the filter cartridge (101) to provide support for the bottom of the filter core (2), characterized in that, The filter cartridge (101) is internally provided with a telescopic connecting assembly (4) for realizing the connection and conduction of the filter core (2) inner cavity and the air outlet (103); The telescopic connecting assembly (4) comprises a telescopic connecting unit and a telescopic guiding unit; The telescopic connecting unit is used for realizing the connection and conduction of the filter core (2) and the air outlet (103), and the telescopic connecting unit is moved and expanded to scrape the inner wall of the air outlet (103); The telescopic guiding unit is used for guiding and limiting the telescopic movement of the telescopic connecting unit; The telescopic connecting unit comprises a corrugated connecting pipe (401) and a threaded connecting pipe (402); The bottom end of the air outlet (103) extends to the inside of the filter cartridge (101) and is fixed with the corrugated connecting pipe (401), the threaded connecting pipe (402) is fixed at the bottom of the corrugated connecting pipe (401), and the air outlet (103), the corrugated connecting pipe (401) and the threaded connecting pipe (402) are sequentially conducted. A screw hole (3) is formed at the top opening of the filter core (2), and the filter core (2) is screwed with the threaded connecting pipe (402) through the screw hole (3) to realize the communication with the air outlet (103).

2. The air compressor external intake filter device of claim 1, wherein, The telescopic connecting unit further comprises an annular moving seat (403); The annular moving seat (403) is fixed outside the threaded connecting pipe (402), and the outside of the annular moving seat (403) is attached to the inner wall side of the filter cartridge (101), and the annular moving seat (403) is moved to scrape the inner wall of the filter cartridge (101).

3. The air compressor external intake filter device of claim 2, wherein, The telescopic guiding unit comprises a guide rod (404), a bottom limiting block (405) and a top limiting block (406); A plurality of guide rods (404) are arranged in an annular and uniform distribution and fixed to the top of the inner wall of the filter cartridge (101) and penetrate the annular moving seat (403), and the annular moving seat (403) is slidably connected with the plurality of guide rods (404); The bottom limiting block (405) is fixed to the bottom of the guide rod (404) to limit the downward movement of the annular moving seat (403); The bottom limiting block (405) is fixed to the position close to the top outside the guide rod (404) to limit the upward movement of the annular moving seat (403).

4. The air compressor external intake filter according to claim 3, wherein, The height of the guide rod (404) is greater than the height of the filter cartridge (101) and less than the overall height of the plugging shell (104) and the filter cartridge (101); The maximum expandable height of the corrugated connecting pipe (401) is greater than the height of the guide rod (404).

5. The air compressor external intake filter according to claim 3, wherein, The distribution track inner diameter of the plurality of guide rods (404) matches the outer diameter of the filter core (2), and the distribution track outer diameter of the plurality of guide rods (404) is less than the inner diameter of the filter cartridge (101).

6. The air compressor external intake filter according to claim 3, wherein, When the upper surface of the annular moving seat (403) is attached to the top limiting block (406), the lower surface of the annular moving seat (403) is higher than the port level of the air inlet (102).

Images