Outer wrapping type oil suction pipe structure

Abstract

The utility model discloses a wrapping type oil suction pipe structure which comprises an oil suction pipe body and a crankshaft, a crankshaft installation portion is arranged below the crankshaft, a clamping hook portion is arranged on the inner wall of the oil suction pipe body in the circumferential direction, and an annular clamping groove matched with the clamping hook portion is correspondingly formed in the periphery of the crankshaft installation portion. The hook-shaped part of the clamping hook part is in radial limiting fit with the annular clamping groove; a traditional cold pressing assembly mode is replaced by radial limiting matching of the clamping hook part and the annular clamping groove, so that the risk generated by metal scraps is effectively eliminated, impurities are prevented from entering a rotating mechanism, meanwhile, the assembly process is simplified, the connection reliability is improved, and the abnormal abrasion probability and vibration noise of equipment are reduced; therefore, the service life of the compressor is remarkably prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of oil suction pipe devices, and more specifically, to an externally enclosed oil suction pipe structure. Background Technology

[0002] As a critical component of compressors and other equipment, the reliability of the oil suction pipe's connection to the crankshaft directly affects the equipment's operational stability. Traditionally, oil suction pipes are pressed into the crankshaft bore using a cold-pressing process, achieving fixation through an interference fit. However, this installation method easily generates metal shavings through friction with the crankshaft's inner wall during the pressing process. These impurities, carried by the lubricating oil, can enter the rotating mechanism, easily causing abnormal wear or even jamming of components, severely limiting the equipment's service life.

[0003] To address these shortcomings, existing technologies have attempted to optimize the press-fitting process or add filtration devices, but these methods have failed to completely resolve the issue of metal impurity generation, and the increased structural complexity leads to higher costs. Therefore, there is an urgent need to develop an oil suction pipe connection structure that simplifies the assembly process, effectively prevents impurity generation, and utilizes mechanical structural characteristics to separate impurities, thereby improving equipment operational reliability. Utility Model Content

[0004] In view of the above-mentioned technical problems in related technologies, this utility model proposes an externally enclosed oil suction pipe structure, which can overcome the above-mentioned deficiencies of the prior art.

[0005] To achieve the above-mentioned technical objectives, the technical solution of this utility model is implemented as follows:

[0006] An externally-mounted oil suction pipe structure;

[0007] The external suction pipe structure includes a suction pipe body and a crankshaft. A crankshaft mounting part is provided below the crankshaft. A hook part is provided circumferentially on the inner wall of the suction pipe body. An annular groove that mates with the hook part is provided on the outer periphery of the crankshaft mounting part. The hook-shaped part of the hook part forms a radial limiting fit with the annular groove.

[0008] Furthermore, the hook portion is a ring-shaped hook structure circumferentially arranged on the inner wall of the oil suction pipe body.

[0009] Furthermore, the hook portion consists of at least two hook structures arranged circumferentially on the inner wall of the oil suction pipe body.

[0010] Furthermore, the hook portions are evenly spaced along the axial direction of the oil suction pipe body.

[0011] Furthermore, the bottom surface of the annular groove is provided with an anti-detachment protrusion, and the inner side of the hook portion is provided with a limiting recess that matches the anti-detachment protrusion.

[0012] Furthermore, the inner wall of the oil suction pipe body is provided with a positioning boss, and the outer wall of the crankshaft mounting part is provided with a corresponding positioning groove. The contact surface between the positioning boss and the positioning groove has a wedge-shaped structure.

[0013] Furthermore, a sealing structure is provided between the hook portion and the annular groove, the sealing structure including an annular sealing groove provided at the root of the hook portion and an O-ring embedded therein.

[0014] The beneficial effects of this utility model are as follows: by replacing the traditional cold-press assembly method with the radial limiting cooperation between the hook part and the annular groove, the risk of metal shavings is effectively eliminated, impurities are prevented from entering the rotating mechanism, the assembly process is simplified and the connection reliability is improved, the probability of abnormal wear and vibration noise of the equipment is reduced, and thus the service life of the compressor is significantly extended. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of an externally-enclosed oil suction pipe structure according to an embodiment of the present utility model;

[0017] Figure 2 This is a cross-sectional view of the overall structure of an externally-enclosed oil suction pipe structure according to an embodiment of the present utility model;

[0018] Figure 3 This is a partial view of the main body of an externally-enclosed oil suction pipe structure according to an embodiment of the present utility model;

[0019] Figure 4 This is a partial view of the crankshaft mounting portion of an externally enclosed oil suction pipe structure according to an embodiment of the present utility model;

[0020] Figure 5 This is a schematic diagram of the existing oil suction pipe body and crankshaft assembly according to an embodiment of the present utility model;

[0021] Figure 6 This is a cross-sectional view of the existing oil suction pipe body and crankshaft assembly according to an embodiment of the present utility model;

[0022] In the diagram: 1. Main body of the suction pipe; 2. Crankshaft; 3. Crankshaft mounting part; 4. Hook part; 5. Annular groove; 6. Traditional suction pipe. Detailed Implementation

[0023] 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 skilled in the art are within the protection scope of the present utility model.

[0024] It should be understood that in the description of the embodiments of this utility model, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of the embodiments of this utility model, "several" means two or more, unless otherwise explicitly specified.

[0025] like Figure 1-4 As shown, according to an embodiment of the present invention, an externally-enclosed oil suction pipe structure includes an oil suction pipe body 1 and a crankshaft 2. A crankshaft mounting part 3 is provided below the crankshaft 2. A hook part 4 is provided circumferentially on the inner wall of the oil suction pipe body 1. An annular groove 5 corresponding to the hook part 4 is provided on the outer periphery of the crankshaft mounting part 3. The hook-shaped part of the hook part 4 forms a radial limiting fit with the annular groove 5.

[0026] According to an embodiment of the present invention, in a specific embodiment of an externally packaged oil suction pipe structure, the hook part 4 is a ring-shaped hook structure circumferentially disposed on the inner wall of the oil suction pipe body 1.

[0027] According to an embodiment of the present invention, in a specific embodiment of an externally-enclosed oil suction pipe structure, the hook portion 4 is at least two hook structures circumferentially disposed on the inner wall of the oil suction pipe body 1.

[0028] According to an embodiment of the present invention, in a specific embodiment of an externally-enclosed oil suction pipe structure, the hook portion 4 is evenly spaced along the axial direction of the oil suction pipe body 1.

[0029] According to an embodiment of the present invention, an external oil suction pipe structure is provided, in a specific embodiment, the bottom surface of the annular groove 5 is provided with an anti-detachment protrusion, and the inner side of the hook part 4 is provided with a limiting recess that matches the anti-detachment protrusion.

[0030] According to an embodiment of the present invention, an externally-enclosed oil suction pipe structure is provided. In a specific embodiment, the inner wall of the oil suction pipe body 1 is provided with a positioning boss, and the outer wall of the crankshaft mounting part 3 is provided with a corresponding positioning groove. The contact surface between the positioning boss and the positioning groove is wedge-shaped.

[0031] According to an embodiment of the present invention, an external suction pipe structure is provided between the hook part 4 and the annular groove 5 in a specific embodiment. The sealing structure includes an annular sealing groove provided at the root of the hook part 4 and an O-ring embedded therein.

[0032] To facilitate understanding of the above-mentioned technical solutions of this utility model, the following detailed description of the above-mentioned technical solutions of this utility model is provided through specific usage methods.

[0033] In practical use, according to the externally-enclosed oil suction pipe structure described in this utility model, the improved oil suction pipe body 1 is connected by a hook portion 4 on the oil suction pipe body 1 and an annular groove 5 on the crankshaft mounting portion 3 through an external enclosed design. This externally-enclosed snap-fit ​​connection reduces metal impurities generated during traditional interference fit cold pressing, and simplifies assembly. Simultaneously, when the crankshaft rotates and draws oil, impurities in the compressor housing, when drawn into the crankshaft hole with the oil, are thrown to the lower end of the crankshaft and blocked by centrifugal force, preventing them from entering the system with the oil.

[0034] In summary, by utilizing the above-mentioned technical solution of this utility model, the radial limiting cooperation between the hook and the annular groove replaces the traditional cold-press assembly method, thereby effectively eliminating the risk of metal shavings, preventing impurities from entering the rotating mechanism, simplifying the assembly process, improving connection reliability, reducing the probability of abnormal wear and vibration noise, and thus significantly extending the service life of the compressor.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 oil suction pipe structure of an outsourcing type, characterized by comprising: The application relates to a suction pipe body (1) and a crankshaft (2), the lower part of the crankshaft (2) is provided with a crankshaft mounting part (3), the inner wall of the suction pipe body (1) is circumferentially provided with a hook part (4), the outer periphery of the crankshaft mounting part (3) is correspondingly provided with an annular clamping groove (5) matched with the hook part (4); the hook part (4) is matched with the annular clamping groove (5) in a radial limiting mode.

2. The outer package type oil suction pipe structure according to claim 1, wherein The hook part (4) is a ring-shaped hook structure circumferentially arranged on the inner wall of the suction pipe body (1).

3. The outer package oil suction tube structure according to claim 1, wherein The hook part (4) is at least two hook structures circumferentially arranged on the inner wall of the suction pipe body (1).

4. The outer package oil suction tube structure according to claim 3, wherein The hook part (4) is uniformly and spacedly distributed along the axial direction of the suction pipe body (1).

5. The external packing type oil suction pipe structure according to claim 1, wherein The bottom surface of the annular clamping groove (5) is provided with an anti-falling convex part, and the inner side surface of the hook part (4) is provided with a limiting recess matched with the anti-falling convex part.

6. The external packing type oil suction pipe structure according to claim 1, wherein The inner wall of the suction pipe body (1) is provided with a positioning boss, the outer wall of the crankshaft mounting part (3) is correspondingly provided with a positioning recess, and the contact surfaces of the positioning boss and the positioning recess are wedge-shaped structures.

7. The external packing type oil suction pipe structure according to claim 1, wherein A sealing structure is arranged between the hook part (4) and the annular clamping groove (5), and the sealing structure comprises an annular sealing groove arranged at the root of the hook part (4) and an O-shaped sealing ring embedded in the annular sealing groove.

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