Hydraulic oil return diffuser

Abstract

The utility model discloses a kind of hydraulic oil return diffusers, it is related to hydraulic technology field.Its structure includes first body, first body is provided with first hole and import part;Second body, at least a part of first body is sleeved in second body, second body is provided with second hole, first hole and second hole are set to each other staggeredly;Third body, third body is installed in the lower end of second body;Third body lower end is provided with annular obliquely downward annular outflow channel.The utility model is through the innovative three-layer structure design and staggered hole channel layout, effectively enhance the diffusion effect when large flow oil return, significantly reduce instantaneous impact;Turbulent flow design accelerates bubble escape, effectively eliminates the bubble in oil liquid;Prolong circulation path and time, improve heat exchange efficiency, enhance heat dissipation performance;Threaded connection mode ensures that structure is simple and reliable, easy to install and maintain;The diffuser is especially suitable for high load working condition, can stably protect hydraulic system, prolong service life.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic technology, and in particular relates to a hydraulic return diffuser. Background Technology

[0002] In the field of hydraulic technology, the hydraulic power unit, as a core component for power transmission and control, is crucial to the performance of the entire system due to its stable operation. During operation, the hydraulic oil discharged from the working mechanism (i.e., return oil) flows back to the hydraulic oil tank through the return oil pipeline. This process often involves a large instantaneous flow rate, especially under high-load and high-frequency operating conditions, where the instantaneous impact force of the return oil poses a severe challenge to the hydraulic oil tank and its internal components.

[0003] Traditionally, to mitigate the impact of return oil on the hydraulic tank and eliminate any air bubbles that may be trapped in the oil, a hydraulic return diffuser is typically installed at the return port of the tank. These diffusers, through specific structural designs, disperse the return oil into multiple fine streams before it enters the tank, thereby reducing flow velocity, minimizing impact, and facilitating the escape of air bubbles and heat dissipation of the oil.

[0004] However, existing hydraulic return diffusers have certain design limitations. Especially when facing extremely high instantaneous return oil flow, the diffusion effect of traditional diffusers is often unsatisfactory. This is because large-flow return oil tends to form concentrated oil flow when passing through the diffuser, resulting in insufficient diffusion and an inability to effectively counteract the kinetic energy of the return oil, thus affecting the protection of the hydraulic tank. Furthermore, existing diffusers are also insufficient in eliminating air bubbles and improving heat dissipation efficiency, making it difficult to meet the high performance and high reliability requirements of modern hydraulic systems.

[0005] Therefore, in view of the problems of poor diffusion effect, limited ability to eliminate air bubbles, and low heat dissipation efficiency of existing hydraulic return oil diffusers when handling large flow rates of return oil, it is necessary to develop a new type of hydraulic return oil diffuser.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the general background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0007] The purpose of this invention is to provide a hydraulic oil return diffuser. Through the innovative design of a three-layer body with staggered openings and an annular oblique outflow channel, the hydraulic oil forms multiple scattering and turbulent flow, effectively enhancing the diffusion effect during high-flow-rate oil return.

[0008] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a hydraulic oil return diffuser, comprising a first body having a first hole and an inlet; a second body having at least a portion of the first body fitted inside the second body, the second body having a second hole, the first hole and the second hole being alternately arranged; and a third body mounted at the lower end of the second body. The lower end of the third body has an annular, downwardly oriented outflow channel. Hydraulic oil flows in from the inlet, is diffused from the first hole of the first body to the second and third bodies, and then flows out through the second hole and the annular outflow channel.

[0009] As a preferred embodiment of the present invention, the first body includes a top wall and a first cylinder; the first cylinder is fixed to the lower surface of the top wall; the inlet is fixed through the middle of the top wall and is coaxially arranged with the first cylinder; the first cylinder has a plurality of first holes.

[0010] As a preferred embodiment of the present invention, the second body includes a second cylinder; the second cylinder has a plurality of second holes.

[0011] As a preferred embodiment of this utility model, the third body includes a third cylinder; a grooved flow-guiding annular ring is fixed to the inner wall of the third cylinder; a flow-guiding cylinder is integrally formed at the upper end of the grooved flow-guiding annular ring; at least six cylinders are fixed to the lower end of the third cylinder, and a conical cap with its pointed tip is fixed to the lower end of the six cylinders; the lower end of the third cylinder and the grooved flow-guiding annular ring and the conical cap together form the annular outflow channel.

[0012] As a preferred embodiment of this utility model, the first body and the second body are connected by a thread; the third body and the second body are connected by a thread.

[0013] As a preferred embodiment of this utility model, the lower surface of the top wall is fixed with an external threaded connecting ring; the inner wall of the upper end of the second cylinder is provided with a first internal thread portion that mates with the external threaded connecting ring; the inner wall of the upper end of the second cylinder is provided with a second internal thread portion; the outer wall of the upper end of the third cylinder is provided with an external thread portion that mates with the second internal thread portion; and a limit ring is fixed on the outer wall of the third cylinder.

[0014] This utility model has the following beneficial effects: 1. This utility model adopts a three-layer structure of a first body, a second body and a third body, combined with staggered first holes and second holes, and an annular outflow channel at the lower end of the third body, so that the hydraulic oil forms multiple scattering and turbulent flow during the diffusion process, which significantly enhances the diffusion effect, and is especially suitable for scenarios with instantaneous large flow rate oil return.

[0015] 2. The turbulent flow and multiple scattering of the hydraulic oil during the diffusion process of this utility model help to destroy air bubbles in the oil, thereby effectively eliminating air bubbles and reducing the damage of cavitation to the hydraulic system.

[0016] 3. By extending the flow time of hydraulic oil, creating turbulent flow, and designing an annular outflow channel, this invention effectively counteracts the hydraulic kinetic energy during oil return, reduces the impact on the hydraulic oil tank, and protects the stability and safety of the hydraulic system.

[0017] 4. This invention increases the contact area and contact time between the hydraulic oil and the inner wall of the diffuser through turbulent flow and multiple scattering, thereby improving heat exchange efficiency, helping to reduce the temperature of the hydraulic oil, and extending the service life of the hydraulic system.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of 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.

[0020] Figure 1 This is a schematic diagram of the hydraulic return diffuser of this utility model.

[0021] Figure 2 This is a schematic diagram of the axial cross-section of this utility model.

[0022] Figure 3 This is a schematic diagram of the axial half-section structure of this utility model.

[0023] Figure 4 This is a schematic diagram of the structure of the first body.

[0024] Figure 5 This is a schematic diagram of the structure of the second body.

[0025] Figure 6 This is a schematic diagram of the structure of the third body.

[0026] The attached diagram lists the components represented by each number as follows: 1-First body, 11-First hole, 12-Inlet, 13-Top wall, 14-First cylinder, 15-External threaded connecting ring, 2-Second body, 21-Second hole, 22-Second cylinder, 3-Third body, 31-Annular outflow channel, 32-Third cylinder, 33-Groove guide annular ring, 34-Guide cylinder, 35-Cylinder, 36-Conical cap, 37-Limiting ring. Detailed Implementation

[0027] 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 scope of protection of the present utility model. Specific Implementation Example 1: Please see Figure 1-6 As shown, this utility model is a hydraulic oil return diffuser, comprising a first body 1, which has a first hole 11 and an inlet 12. A second body 2, at least a portion of the first body 1 is fitted inside the second body 2, which has a second hole 21, with the first hole 11 and the second hole 21 arranged alternately. A third body 3 is installed at the lower end of the second body 2. The lower end of the third body 3 has an annular outflow channel 31 that slopes downwards. Hydraulic oil flows in from the inlet 12, is diffused through the first hole 11 of the first body 1 towards the second body 2 and the third body 3, and then flows out through the second hole 21 and the annular outflow channel 31.

[0029] Specifically, the first body 1 includes a top wall 13 and a first cylinder 14; the first cylinder 14 is fixed to the lower surface of the top wall 13; the inlet 12 is fixed through the middle of the top wall 13 and is coaxially arranged with the first cylinder 14; the first cylinder 14 has a plurality of first holes 11.

[0030] The second body 2 includes a second cylinder 22; the second cylinder 22 has several second holes 21. The third body 3 includes a third cylinder 32; a grooved flow-guiding annular ring 33 is fixed on the inner wall of the third cylinder 32; a flow-guiding cylinder 34 is integrally formed on the upper end of the grooved flow-guiding annular ring 33; at least six cylinders 35 are fixed on the lower end of the third cylinder 32, and a conical cap 36 with its pointed tip is fixed on the lower end of the six cylinders 35; the lower end of the third cylinder 32 and the grooved flow-guiding annular ring 33 and the conical cap 36 together form an annular outflow channel 31.

[0031] In terms of connection method, the first body 1 and the second body 2 are connected by threads; the third body 3 and the second body 2 are also connected by threads. Specifically, the lower surface of the top wall 13 is fixed with an external threaded ring 15; the upper inner wall of the second cylinder 22 has a first internal thread that mates with the external threaded ring 15; the upper inner wall of the second cylinder 22 also has a second internal thread; the upper outer wall of the third cylinder 32 has an external thread that mates with the second internal thread; and a limit ring 37 is fixed on the outer wall of the third cylinder 32 to prevent over-connection.

[0032] Working process: Hydraulic oil flows in from the inlet 12, first impacting the bottom and side walls of the first cylinder 14, and then scattering through the first hole 11 into the gap between the second cylinder 22 and the first cylinder 14. Because the first hole 11 and the second hole 21 are staggered, the hydraulic oil forms a turbulent flow within the gap, effectively offsetting some of the hydraulic kinetic energy. The hydraulic flow output from below the first cylinder 14 is divided into two parts: a portion of high-pressure hydraulic oil is guided through the grooved guide ring 33 to the gap between the second cylinder 22 and the first cylinder 14. The closer to the lower end of the second cylinder 22, the stronger the turbulence or self-disturbance of the hydraulic oil flow. This effectively offsets the kinetic energy of the hydraulic oil when the return oil volume increases instantaneously, prolongs the return oil time, helps eliminate hydraulic oil foam, and reduces impact and improves heat dissipation. Another portion of the high-pressure hydraulic oil flows from the guide cylinder 34 to the annular outlet channel 31, and finally flows out obliquely downward from the annular outlet channel 31, further expanding the diffusion range of the return oil, releasing the return oil pressure, which also helps to eliminate the foam of the hydraulic oil, and can reduce the impact and improve the heat dissipation effect.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A hydraulic return diffuser, characterized in that, include: The first body (1) is provided with a first hole (11) and an inlet (12). The second body (2) is fitted inside the first body (1), and the second body (2) is provided with a second hole (21), and the first hole (11) and the second hole (21) are arranged alternately. The third body (3) is installed at the lower end of the second body (2); the lower end of the third body (3) is provided with an annular, downwardly angled outflow channel (31); wherein, After the hydraulic oil flows in from the inlet (12), it is scattered from the first hole (11) of the first body (1) to the second body (2) and the third body (3), and then flows out through the second hole (21) and the annular outflow channel (31).

2. The hydraulic return diffuser according to claim 1, characterized in that, The first body (1) includes a top wall (13) and a first cylinder (14); the first cylinder (14) is fixed to the lower surface of the top wall (13); the inlet (12) is fixed through the middle of the top wall (13), and the inlet (12) is coaxially arranged with the first cylinder (14); the first cylinder (14) has a plurality of first holes (11).

3. The hydraulic return diffuser according to claim 2, characterized in that, The second body (2) includes a second cylinder (22); the second cylinder (22) has a plurality of second holes (21).

4. The hydraulic return diffuser according to claim 3, characterized in that, The third body (3) includes a third cylinder (32); a grooved flow guide annular ring (33) is fixed on the inner wall of the third cylinder (32); a flow guide cylinder (34) is integrally formed on the upper end of the grooved flow guide annular ring (33); at least six cylinders (35) are fixed on the lower end of the third cylinder (32), and a cone cap (36) with the pointed end facing upward is fixed on the lower end of the six cylinders (35); the lower end of the third cylinder (32) and the grooved flow guide annular ring (33) and the cone cap (36) together form the annular outflow channel (31).

5. The hydraulic return diffuser according to claim 4, characterized in that, The first body (1) and the second body (2) are connected by a thread; the third body (3) and the second body (2) are connected by a thread.

6. The hydraulic return diffuser according to claim 5, characterized in that, The lower surface of the top wall (13) is fixed with an external threaded ring (15); the upper inner wall of the second cylinder (22) is provided with a first internal thread that mates with the external threaded ring (15); the upper inner wall of the second cylinder (22) is provided with a second internal thread; the upper outer wall of the third cylinder (32) is provided with an external thread that mates with the second internal thread; and a limit ring (37) is fixed on the outer wall of the third cylinder (32).

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