Filter upper cover and filter

Abstract

The utility model belongs to the technical field of engines, and relates to a filter upper cover and a filter, the filter upper cover comprises an upper cover body, a boss which is integrally connected and extends outwards in the axial direction is constructed at the center position of the top of the upper cover body, and a limiting clamping column which is integrally connected and extends inwards in the axial direction is constructed at the top of an inner cavity of the upper cover body. A middle hole of the limiting clamping column is communicated with an inner hole of the boss, the limiting clamping column is further provided with a plurality of peripheral side exhaust grooves, and the peripheral side exhaust grooves are communicated with the middle hole of the limiting clamping column; a plurality of buckles are evenly distributed at the lower end of the limiting clamping column along the circumference, the limiting clamping column is sleeved with a spring piece, the lower end of the spring piece is limited through the buckles, the upper end of the spring piece abuts against the bottom face of the limiting clamping column, and the spring piece is matched with the limiting clamping column to achieve axial and radial limiting of the paper element component. The upper cover can limit the shaking of the paper core, facilitates the discharge of gas, and improves the use efficiency of the filter.

Description

Technical Field

[0001] The utility model belongs to the technical field of engines and relates to a filter upper cover and a filter. Background Art

[0002] The overall structure of the engine is compact and the reserved installation space is small. The filter assembly is designed to be detachable and modular; during maintenance, only the paper core is replaced, and the use cost is relatively low. However, at present, the assembly and positioning of the paper core of this type of filter structure are multiple buckles at the top end of the upper cover, and these buckles are directly connected to the upper end cover of the paper core. During the tightening and loosening of the upper cover, the paper core component rotates with it, which is not convenient for disassembly. Moreover, the paper core has no radial positioning, which easily causes internal sealing failure and affects the use efficiency of the filter. At the same time, this structure has no exhaust function. Summary of the Invention

[0003] Aiming at the above problems, the utility model provides a filter upper cover which can limit the shaking of the paper core, facilitate the discharge of gas, and improve the use efficiency of the filter.

[0004] According to the technical solution of the utility model: a filter upper cover includes an upper cover body, and is characterized in that: a boss integrally connected and extending axially outward is constructed at the central position of the top of the upper cover body, and a limiting clamping column integrally connected and extending axially inward is constructed at the top of the inner cavity of the upper cover body. The middle hole of the limiting clamping column is communicated with the inner hole of the boss, and the limiting clamping column is also provided with a plurality of circumferential exhaust grooves, and the circumferential exhaust grooves are communicated with the middle hole of the limiting clamping column;

[0005] A plurality of buckles are evenly arranged along the circumference at the lower end of the limiting clamping column. A spring piece is sleeved on the limiting clamping column. The lower end of the spring piece is limited by the buckle, and the upper end of the spring piece abuts against the bottom surface of the limiting clamping column. The spring piece and the limiting clamping column cooperate to realize the axial and radial limitation of the paper core component.

[0006] As a further improvement of the utility model, an internal thread is provided in the inner hole of the boss to connect an external part; a wire screw insert is provided for the internal thread to protect the internal thread.

[0007] As a further improvement of the utility model, the outer side surface of the boss is a polygonal structure to fix the upper cover body when connecting with an external part.

[0008] As a further improvement of the utility model, the inner diameter of the middle hole of the limiting clamping column is larger than the inner diameter of the inner hole of the boss.

[0009] As a further improvement of the utility model, the spring piece includes a claw piece and a spring piece seat integrally connected with the claw piece, and an arc transition connection is provided between the spring piece seat and the claw piece.

[0010] The present utility model further provides a filter, which includes the above-mentioned filter upper cover, and also includes a filter base. A paper core component is installed in the inner cavity of the filter base, and the upper cover body is threadedly connected to the filter base.

[0011] As a further improvement of the present utility model, the upper end cover of the paper core component is provided with a concave cavity, and the buckle of the limit clamping column falls into the concave cavity to realize the radial limit of the paper core component; the spring piece forms an axial limit on the paper core component.

[0012] The technical effect of the present utility model is that the convex platform at the top of the upper cover of the present utility model is provided with an internal threaded hole, and the inner limit clamping column thereof has a middle hole and a plurality of exhaust grooves on the circumferential side, thus constituting a novel exhaust structure, which can solve the problem of gas accumulation at the top of the filter assembly.

[0013] The buckle of the limit clamping column of the upper cover fixes the spring piece, and the axial limit of the paper core component is carried out by the contact between the spring piece and the lower end surface of the limit clamping column. At the same time, the radial limit of the paper core component is realized by the plurality of buckles on the limit clamping column falling into the concave part of the upper end cover of the paper core component; the position of the paper core is fixed, the paper core component is protected, and the service life of the filter is prolonged. Description of the Drawings

[0014] Figure 1 It is a structural schematic diagram of the filter upper cover.

[0015] Figure 2 It is Figure 1 a sectional view of

[0016] Figure 3 It is Figure 1 a top view of the filter upper cover of

[0017] Figure 4 It is a structural schematic diagram of the filter.

[0018] Figure 5 It is Figure 4 a partial enlarged view at A in

[0019] Figure 6 It is a schematic diagram of the exhaust flow direction. Detailed Embodiments

[0020] The following further describes the detailed embodiments of the present utility model with reference to the drawings.

[0021] To enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. The described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0022] Figures 1-6 It includes an upper cover 1, a boss 1.1, a limit clamping post 1.2, an exhaust groove 1.21, a buckle 1.22, a spring piece 2, a claw piece 2.1, a spring piece seat 2.2, a paper core component 3, an upper end cover 3.1, an inner concave cavity 3.11, a filter base 4, etc.

[0023] As Figures 1-3 shown, the present utility model is a filter upper cover, including an upper cover body 1. A boss 1.1 that is integrally connected and extends axially outward is constructed at the central position of the top of the upper cover body 1. A limit clamping post 1.2 that is integrally connected and extends axially inward is constructed at the top of the inner cavity of the upper cover body 1. The middle hole of the limit clamping post 1.2 is communicated with the inner hole of the boss 1.1. The limit clamping post 1.2 is also provided with a plurality of circumferential exhaust grooves 1.21, and the circumferential exhaust grooves 1.21 are communicated with the middle hole of the limit clamping post 1.2.

[0024] A plurality of buckles 1.22 are uniformly arranged along the circumference at the lower end of the limit clamping post 1.2. A spring piece 2 is sleeved on the limit clamping post 1.2. The lower end of the spring piece 2 is limited by the buckle 1.22, and the upper end of the spring piece 2 abuts against the bottom surface of the limit clamping post 1.2. The spring piece 2 and the limit clamping post 1.2 cooperate to realize the axial and radial limitation of the paper core component 3. The air accumulated in the space from the upper end cover 3.1 of the paper core component 3 to the inner top end of the upper cover body 1 can be discharged from the filter through the exhaust groove 1.21 and the middle hole, the central threaded hole of the boss 1.1 and the external part.

[0025] The inner hole of the boss 1.1 is provided with an internal thread to connect with an external part; the internal thread is equipped with a wire thread insert to protect the internal thread and extend the service life of the internal thread.

[0026] The outer side surface of the boss 1.1 is a polygonal structure, so that when connecting with an external part, the upper cover body 1 can be fixed, and finally the filter assembly is sealed reliably and convenient to use.

[0027] The inner diameter of the middle hole of the limit clamping post 1.2 is larger than the inner diameter of the inner hole of the boss 1.1.

[0028] The spring piece 2 includes a claw piece 2.1 and a spring piece seat 2.2 integrally connected to the claw piece 2.1. There is an arc transition connection between the spring piece seat 2.2 and the claw piece 2.1. The spring piece 2 is provided with four claw pieces 2.1, and the four claw pieces 2.1 press on the upper end surface of the paper core component 3. At this time, the upper end surface of the spring piece 2 contacts the lower end surface of the limit clamping column 1.2, thereby realizing the axial limit of the paper core component. At the same time, Figure 4 and Figure 5 As shown, the buckle of the limit clamping column 1.2 falls into the concave cavity 3.11 of the upper end cover 3.1 of the paper core component 3, thereby realizing the radial limit of the paper core component 3. Finally, the position of the paper core is fixed, protecting the paper core component and extending the service life of the filter.

[0029] As Figures 4-6 shown, the present invention also provides a filter, including the above-mentioned filter upper cover, and further including a filter base 4. The paper core component 3 is installed in the inner cavity of the filter base 4, and the upper cover body 1 is threadedly connected to the filter base 4.

[0030] The upper end cover 3.1 of the paper core component 3 is provided with a concave cavity 3.11, and the buckle 1.22 of the limit clamping column 1.2 falls into the concave cavity 3.11 to realize the radial limit of the paper core component 3. The spring piece 2 forms an axial limit on the paper core component 3.

[0031] During the disassembly process of the present invention, the phenomenon of the paper core component 3 rotating with the tool will not occur, and good internal sealing performance of the paper core component 3 can be achieved, making the performance of the filter excellent and reliable.

[0032] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the examples, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A filter cover, comprising a cover body (1), characterized in that: The top center position of the upper cover body (1) is provided with a boss (1.1) integrally connected and extending axially outward, the top of the inner cavity of the upper cover body (1) is provided with a limit post (1.2) integrally connected and extending axially inward, the middle hole of the limit post (1.2) is connected to the inner hole of the boss (1.1), the limit post (1.2) is further provided with a plurality of peripheral exhaust grooves (1.21), and the peripheral exhaust grooves (1.21) are connected to the middle hole of the limit post (1.2); A plurality of buckles (1.22) are evenly arranged along the circumference of the lower end of the limiting clamping column (1.2); a spring sheet (2) is sleeved on the limiting clamping column (1.2); the lower end of the spring sheet (2) is limited by the buckle (1.22); the upper end of the spring sheet (2) abuts against the bottom surface of the limiting clamping column (1.2); the spring sheet (2) cooperates with the limiting clamping column (1.2) to limit the axial and radial directions of the paper core component (3).

2. The filter cover according to claim 1, characterized in that: The inner hole of the boss (1.1) is provided with an internal thread for connecting an external component; the internal thread is provided with a wire thread sleeve to protect the internal thread.

3. The filter cover according to claim 1, characterized in that: The outer side surface of the boss (1.1) is a polygonal structure, so as to fix the upper cover body (1) when connected to an external component.

4. The filter cover according to claim 1, characterized in that: The inner diameter of the center hole of the limiting clamping column (1.2) is larger than the inner diameter of the inner hole of the boss (1.1).

5. The filter cover according to claim 1, characterized in that: The spring sheet (2) comprises a claw sheet (2.1) and a spring sheet seat (2.2) integrally connected to the claw sheet (2.1); the spring sheet seat (2.2) and the claw sheet (2.1) are connected in a circular arc transition.

6. A filter, characterized in that: The filter upper cover comprises the filter upper cover as claimed in any one of claims 1 to 5, and also comprises a filter seat (4), wherein the paper core component (3) is installed in the inner cavity of the filter seat (4), and the upper cover body (1) is threadedly connected to the filter seat (4).

7. The filter according to claim 6, characterized in that: The upper end cover (3.1) of the paper core component (3) is provided with an inner concave cavity (3.11), and the buckle (1.22) of the limiting clamping column (1.2) falls into the inner concave cavity (3.11), thereby realizing radial limiting of the paper core component (3); and the spring sheet (2) forms an axial limiting for the paper core component (3).

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