Air filter with pre-filtering structure

Abstract

The utility model relates to the technical field of air filters, and discloses an air filter with a pre-filtering structure, which comprises an air filter main body, the top of the air filter main body is provided with a positioning connecting groove, and a pre-filtering filter is movably inserted into the air filter main body. By arranging the pre-filtering assembly mechanism, unlocking of the assembly support is conveniently completed, a new pre-filtering filter can be conveniently replaced, the purpose that the pre-filtering filter is easy and convenient to replace and maintain is achieved, the maintenance efficiency is improved, it is guaranteed that the pre-filtering effect of the pre-filtering filter is stable, and the service life of the pre-filtering filter is prolonged. The air filtering effect of the device is improved; by arranging the stabilizing mechanism, fixation of the reinforcing positioning block after the reinforcing positioning block is movably inserted into the assembling support is conveniently completed, the pre-filtering filter and the assembling support after installation are reinforced, and it is ensured that the pre-filtering filter and the assembling support are stable in structure and not loose after being assembled.

Description

Technical Field

[0001] This utility model relates to the field of air filter technology, and in particular to an air filter with a pre-filtration structure. Background Technology

[0002] Air filters are mainly used for air filtration in engineering vehicles, automobiles, agricultural vehicles, laboratories, sterile operating rooms, and various precision operating rooms. For example, when an engine is working, it needs to draw in a large amount of air. If the air is not filtered, the dust suspended in the air will be drawn into the cylinder, which will accelerate the wear of the piston assembly and cylinder. Larger particles entering between the piston and cylinder will cause serious "cylinder scoring," which is especially serious in dry and sandy working environments. The air filter is installed in front of the carburetor or intake manifold to filter out dust and sand particles in the air, ensuring that a sufficient amount of clean air enters the cylinder.

[0003] For example, Chinese Patent Application No. 201721143212.0 discloses an air filter, including a hollow barrel. A filter element is installed in the barrel through a gap. The gap between the outer circular surface of the filter element and the rotating inner wall of the barrel forms an air intake chamber. The front end of the barrel has an air inlet located perpendicular to its axis and offset to one side. The air intake chamber has a centrifugal rectifying structure that guides air from the front end of the air intake chamber to the rear end in a spiral direction. The rear end of the barrel has a dust collector connected to the air intake chamber. The front end of the barrel has an air outlet connected to the central hole of the filter element. This air filter has a compact structure, integrates a pre-filtration function, and has high pre-filtration efficiency. It can effectively improve the air cleanliness of the internal combustion engine intake system, provide good protection for the internal combustion engine, greatly reduce the wear of various moving parts of the internal combustion engine, and improve the reliability and durability of the internal combustion engine.

[0004] However, in the aforementioned air filters, the pre-filter element is not easily disassembled and quickly replaced during use, affecting operational convenience. Therefore, those skilled in the art have provided an air filter with a pre-filter structure to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an air filter with a pre-filtration structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an air filter with a pre-filter structure, comprising an air filter body, a positioning connection groove on the top of the air filter body, a pre-filter movably inserted into the interior of the air filter body, an assembly bracket fixed on the top of the pre-filter, a pre-filter assembly mechanism on the top of the air filter body, and a stabilizing mechanism installed on the top of the air filter body;

[0007] The pre-filter assembly mechanism includes a positioning metal pad, with positioning mounting pads fixed on both sides of the positioning metal pad. The top of the assembly bracket has a positioning mounting groove, and the inside of the assembly bracket has a connecting groove. Assembly connecting blocks are fixed on both sides of the positioning metal pad. A first semi-threaded post is installed on the outer side of the assembly connecting block. A support limiting frame is fixed on the top of the air filter body, and a second semi-threaded post is fixed on the outer side of the support limiting frame. Connecting nuts are threadedly connected to the outer sides of the first and second semi-threaded posts.

[0008] As a further description of the above technical solution:

[0009] The radius of the first semi-threaded post is equal to that of the second semi-threaded post, and the outer side of the connecting nut is provided with anti-slip texture.

[0010] By adopting the above technical solution, it is easy to connect the connecting nut to the first half-thread post and the second half-thread post.

[0011] As a further description of the above technical solution:

[0012] The dimensions of the positioning mounting groove are adapted to the dimensions of the positioning metal pad, and the top of the support limiting frame is provided with a groove adapted to the dimensions of the positioning metal pad.

[0013] By adopting the above technical solution, the positioning metal pad can be movably inserted into the positioning mounting groove.

[0014] As a further description of the above technical solution:

[0015] The dimensions of the connecting groove are adapted to the dimensions of the positioning mounting pad, and the interior of the support limiting frame has a groove adapted to the dimensions of the positioning mounting pad.

[0016] By adopting the above technical solution, the positioning mounting pad can be movably inserted into the connecting groove.

[0017] As a further description of the above technical solution:

[0018] The air filter body has an internal mounting groove that matches the size of the pre-filter, and the filter element of the pre-filter is connected to the filter element of the air filter body.

[0019] By adopting the above technical solution, pre-filtration can be performed through the filter element of the pre-filter.

[0020] As a further description of the above technical solution:

[0021] The stabilizing mechanism includes a fixing block, a cast iron pad fixed to one side of the fixing block, a cast iron threaded rod movably inserted into the top of the cast iron pad through its bottom, a rubber sleeve fixed to the top of the cast iron threaded rod, a cast iron threaded sleeve fixed to the top of the air filter body, an anti-disengagement groove provided on the top of the air filter body, and an anti-disengagement slider slidably connected to the air filter body through the anti-disengagement groove.

[0022] As a further description of the above technical solution:

[0023] The cast iron threaded rod and the cast iron threaded sleeve are threaded together, and the outer side of the rubber sleeve is provided with anti-slip texture.

[0024] By adopting the above technical solution, the position of the cast iron pad and the fixed positioning block is fixed after the cast iron threaded rod and cast iron threaded sleeve are connected by threads.

[0025] As a further description of the above technical solution:

[0026] The assembly bracket has a groove inside, the size of which is adapted to the size of the fixing block.

[0027] By adopting the above technical solution, one end of the fixed positioning block is movably inserted into the inside of the assembly bracket.

[0028] This utility model has the following beneficial effects:

[0029] 1. Compared with the prior art, this air filter with a pre-filter structure, through the provision of a pre-filter assembly mechanism, allows for easy unlocking of the assembly bracket, followed by pulling the assembly bracket to remove the pre-filter, and convenient replacement with a new pre-filter. This achieves the goal of simplifying the replacement and maintenance of the pre-filter, improves maintenance efficiency, helps ensure the stable pre-filter effect, and enhances the air filtration effect of the device.

[0030] 2. Compared with the prior art, this air filter with a pre-filter structure has a stabilizing mechanism that facilitates the fixing of the fixed positioning block after it is movably inserted into the assembly bracket, thereby reinforcing the pre-filter and the assembly bracket after installation and ensuring that the pre-filter and the assembly bracket are structurally stable and do not loosen after assembly. Attached Figure Description

[0031] Figure 1 This is a perspective view of an air filter with a pre-filtration structure proposed in this utility model;

[0032] Figure 2 This is a schematic diagram of the outer part of an air filter with a pre-filtration structure proposed in this utility model.

[0033] Figure 3 This utility model Figure 2 Enlarged schematic diagram of region A;

[0034] Figure 4 This utility model Figure 2 A magnified diagram of region B.

[0035] Legend:

[0036] 1. Air filter body; 2. Positioning connection groove; 3. Pre-filter; 4. Assembly bracket; 5. Pre-filter assembly mechanism; 51. Positioning metal pad; 52. Positioning mounting pad; 53. Positioning mounting groove; 54. Connection groove; 55. Assembly connecting block; 56. First half-threaded post; 57. Support limit bracket; 58. Second half-threaded post; 59. Connecting nut; 6. Stabilizing mechanism; 61. Adding fixing block; 62. Cast iron pad; 63. Cast iron threaded rod; 64. Rubber sleeve; 65. Cast iron threaded sleeve; 66. Anti-disengagement slider; 67. Anti-disengagement groove. Detailed Implementation

[0037] 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.

[0038] Reference Figures 1-4The present invention provides an air filter with a pre-filter structure: including an air filter body 1, a positioning connection groove 2 on the top of the air filter body 1, a pre-filter 3 movably inserted into the air filter body 1, an assembly bracket 4 fixed on the top of the pre-filter 3, a pre-filter assembly mechanism 5 on the top of the air filter body 1, and a stabilizing mechanism 6 installed on the top of the air filter body 1.

[0039] The pre-filter assembly mechanism 5 includes a positioning metal pad 51, with positioning mounting pads 52 fixed on both sides of the positioning metal pad 51. A positioning mounting groove 53 is provided on the top of the assembly bracket 4, and a connecting groove 54 is provided inside the assembly bracket 4. Assembly connecting blocks 55 are fixed on both sides of the positioning metal pad 51. A first semi-threaded post 56 is installed on the outer side of the assembly connecting block 55. A support limiting frame 57 is fixed on the top of the air filter body 1, and a second semi-threaded post 58 is fixed on the outer side of the support limiting frame 57. A connecting nut 59 is threadedly connected to the outer sides of the first semi-threaded post 56 and the second semi-threaded post 58. The radius of the first semi-threaded post 56 is equal to the radius of the second semi-threaded post 58. The outer side of the connecting nut 59 is provided with anti-slip textures for easy connection. 9 is threadedly connected to the first semi-threaded post 56 and the second semi-threaded post 58. The size of the positioning mounting groove 53 is adapted to the size of the positioning metal pad 51. The top of the support limit frame 57 is provided with a groove adapted to the size of the positioning metal pad 51, so that the positioning metal pad 51 can be movably inserted into the positioning mounting groove 53. The size of the connecting groove 54 is adapted to the size of the positioning mounting pad 52. The inside of the support limit frame 57 is provided with a groove adapted to the size of the positioning mounting pad 52, so that the positioning mounting pad 52 can be movably inserted into the connecting groove 54. The inside of the air filter body 1 is provided with a mounting groove adapted to the size of the pre-filter 3. The filter element of the pre-filter 3 is connected to the filter element of the air filter body 1, so that pre-filtration can be performed through the filter element of the pre-filter 3.

[0040] The stabilizing mechanism 6 includes a fixing block 61, a cast iron pad 62 fixed to one side of the fixing block 61, a cast iron threaded rod 63 movably inserted into the top of the cast iron pad 62 through its bottom, a rubber sleeve 64 fixed to the top of the cast iron threaded rod 63, a cast iron threaded sleeve 65 fixed to the top of the air filter body 1, an anti-detachment groove 67 opened on the top of the air filter body 1, an anti-detachment slider 66 slidably connected to the air filter body 1 through the anti-detachment groove 67, the cast iron threaded rod 63 and the cast iron threaded sleeve 65 are threadedly connected, and the outer side of the rubber sleeve 64 is provided with anti-slip texture. After the cast iron threaded rod 63 and the cast iron threaded sleeve 65 are threadedly connected, the positions of the cast iron pad 62 and the fixing block 61 are fixed. The inside of the mounting bracket 4 is provided with a groove, the size of which is adapted to the size of the fixing block 61, and one end of the fixing block 61 is movably inserted into the inside of the mounting bracket 4.

[0041] Working principle: After the air filter body 1 is installed in the corresponding position, the pre-filter 3 is installed inside the air filter body 1. The corresponding exhaust gas first undergoes pre-treatment and filtration through the pre-filter 3, and then enters the air filter body 1 for secondary filtration. When the air filter body 1 needs to be replaced after long-term use, the connecting nut 59 on the outside of the first half-threaded post 56 and the second half-threaded post 58 can be unscrewed. Then, the assembly connecting block 55 can be moved to drive the positioning metal pad 51 and the positioning mounting pad 52 out of the corresponding positioning mounting groove 53 and the connecting groove 54, which can easily unlock the assembly bracket 4. Then, the assembly bracket 4 can be pulled to remove the pre-filter 3, and a new pre-filter 3 can be easily replaced, achieving the purpose of simplifying the replacement and maintenance of the pre-filter 3. This improves maintenance efficiency and helps ensure the stable pre-filtration effect of the pre-filter 3, thus enhancing the air filtration effect of the device. The device is equipped with a stabilizing mechanism 6. After the pre-filter 3 is installed inside the air filter body 1, the anti-detachment slider 66 can be pushed to slide in the anti-detachment groove 67. The anti-detachment slider 66 drives the fixing block 61 to move, allowing one end of the fixing block 61 to be movably inserted into the assembly bracket 4. At this time, the rubber sleeve 64 can be held and rotated clockwise to make the cast iron threaded rod 63 threadedly connected to the cast iron threaded sleeve 65, which conveniently completes the fixing of the fixing block 61 after it is movably inserted into the assembly bracket 4. This reinforces the pre-filter 3 and the assembly bracket 4 after installation, ensuring that the pre-filter 3 and the assembly bracket 4 are structurally stable and do not loosen after assembly.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An air filter with a pre-filtration structure, comprising an air filter body (1), characterized in that: The air filter body (1) has a positioning connection groove (2) on its top. A pre-filter (3) is movably inserted into the air filter body (1). An assembly bracket (4) is fixed on the top of the pre-filter (3). A pre-filter assembly mechanism (5) is provided on the top of the air filter body (1). A stabilizing mechanism (6) is installed on the top of the air filter body (1). The pre-filter assembly mechanism (5) includes a positioning metal pad (51), and positioning mounting pads (52) are fixed on both sides of the positioning metal pad (51). The top of the assembly bracket (4) is provided with a positioning mounting groove (53), and the inside of the assembly bracket (4) is provided with a connecting groove (54). Assembly connecting blocks (55) are fixed on both sides of the positioning metal pad (51). A first semi-threaded column (56) is installed on the outside of the assembly connecting block (55). A support limiting frame (57) is fixed on the top of the air filter body (1). A second semi-threaded column (58) is fixed on the outside of the support limiting frame (57). A connecting nut (59) is threadedly connected to the outside of the first semi-threaded column (56) and the second semi-threaded column (58).

2. An air filter with a pre-filtration structure according to claim 1, characterized in that: The radius of the first semi-threaded post (56) is equal to that of the second semi-threaded post (58), and the outer side of the connecting nut (59) is provided with anti-slip texture.

3. An air filter with a pre-filtration structure according to claim 1, characterized in that: The size of the positioning mounting groove (53) is adapted to the size of the positioning metal pad (51), and the top of the support limiting frame (57) is provided with a groove adapted to the size of the positioning metal pad (51).

4. An air filter with a pre-filtration structure according to claim 1, characterized in that: The size of the connecting groove (54) is adapted to the size of the positioning mounting pad (52), and the inside of the support limiting frame (57) is provided with a groove adapted to the size of the positioning mounting pad (52).

5. An air filter with a pre-filtration structure according to claim 1, characterized in that: The air filter body (1) has an installation groove inside that is adapted to the size of the pre-filter (3), and the filter element of the pre-filter (3) is connected to the filter element of the air filter body (1).

6. An air filter with a pre-filtration structure according to claim 1, characterized in that: The stabilizing mechanism (6) includes a fixing block (61), a cast iron pad (62) is fixed on one side of the fixing block (61), a cast iron threaded rod (63) that passes through the bottom of the cast iron pad (62) is movably inserted into the top of the cast iron pad (62), a rubber sleeve (64) is fixed to the top of the cast iron threaded rod (63), a cast iron threaded sleeve (65) is fixed to the top of the air filter body (1), an anti-disengagement groove (67) is provided on the top of the air filter body (1), and an anti-disengagement slider (66) is slidably connected to the air filter body (1) through the anti-disengagement groove (67).

7. An air filter with a pre-filtration structure according to claim 6, characterized in that: The cast iron threaded rod (63) and the cast iron threaded sleeve (65) are threaded together, and the outer side of the rubber sleeve (64) is provided with anti-slip texture.

8. An air filter with a pre-filtration structure according to claim 6, characterized in that: The assembly bracket (4) has a groove inside, the size of which is adapted to the size of the fixing block (61).

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