Hydraulic station oil return filtering device

Abstract

The utility model discloses a kind of hydraulic station oil return filtering devices, it is related to the component technical field of hydraulic pump station. Its structure includes tank body, tank cover, filter core, support core cylinder, magnetic bar;Tank body is threadedly connected with tank cover;Support core cylinder is threadedly connected with tank cover;Filter core sleeve is installed outside support core cylinder;One circle magnetic bar is inserted and installed in tank body. The utility model is adsorbed metal impurities by magnetic bar array high efficiency, and non-metallic particle is filtered in depth in combination filter core, realizes double purification;Spiral flow guide structure disperses hydraulic oil flow pressure, reduces filter core impact, prolongs service life;Modular design supports quick disassembly and assembly, is convenient for routine maintenance and cleaning. The device effectively improves the cleanliness of hydraulic system, guarantees operating stability, reduces equipment wear and failure rate, reduces maintenance cost at the same time, applicable to long-acting filtering demand under large-flow working condition.

Description

Technical Field

[0001] This utility model belongs to the technical field of hydraulic pump station components, and in particular relates to a hydraulic station return oil filtration device. Background Technology

[0002] In hydraulic transmission systems, hydraulic oil, as the core medium for transmitting power and signals, has a decisive impact on system stability and equipment lifespan due to its cleanliness. However, during the operation of hydraulic pump stations, hydraulic oil is easily contaminated with impurities from various sources: mechanical impurities such as water rust, casting sand, and welding slag remaining from the system manufacturing and assembly stage; particulate matter from external dust entering the oil tank through seals; and seal fragments, metal wear powder, and hydraulic oil oxidation products during operation. If these impurities are not effectively filtered, they will lead to wear of hydraulic components, decreased system performance, and even system failure and shutdown.

[0003] Traditional hydraulic return oil filters generally suffer from technical limitations, making it difficult to meet the dual demands of modern hydraulic systems for high cleanliness and stability. Their filter media are often made of a single material, resulting in low efficiency in simultaneously removing both metallic and non-metallic impurities; limited pore size design leads to easy clogging, requiring frequent shutdowns for cleaning; and their complex structure makes disassembly and maintenance time-consuming and labor-intensive, significantly increasing maintenance costs. More importantly, traditional designs do not consider the pressure dispersion problem during high-speed hydraulic oil flow, subjecting the filter element to concentrated impacts over a long period, accelerating wear and shortening replacement cycles.

[0004] To address the aforementioned technical problems, this utility model proposes an innovative hydraulic station return oil filtration device. The information disclosed in this background section is intended only to enhance understanding of the overall background technology of this utility model and should not be construed as an admission or implication in any way that such information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this utility model is to provide a hydraulic station return oil filtration device, which achieves efficient adsorption of metal impurities, deep filtration of non-metallic particles, and uniform dispersion of flow pressure through a composite filtration structure of magnetic rod array and filter element combined with spiral flow optimization technology.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a hydraulic station return oil filtration device, comprising a tank body, a tank cover, a filter element, a support core cylinder, and a magnetic rod; the tank body is threadedly connected to the tank cover; the support core cylinder is threadedly connected to the tank cover; the filter element is sleeved and installed on the outside of the support core cylinder; a ring of magnetic rods is inserted and installed inside the tank body.

[0008] As a preferred embodiment of this utility model, an oil inlet connector and an oil outlet connector are installed on the tank body.

[0009] As a preferred embodiment of this utility model, the tank includes a first internal thread on the inner wall of the upper port, and a ring plate fixed below the first internal thread; a ring of evenly distributed clockwise / counterclockwise oblique downward guide holes is opened on the ring plate; a cylinder is fixed on the inner ring surface of the ring plate; a ring of evenly distributed insertion holes for inserting and installing the magnetic rod is opened on the bottom surface of the tank; the lower end of the cylinder is placed in the middle of the inner cavity of the tank.

[0010] As a preferred embodiment of this utility model, an annular oil passage is provided at the lower end of the can cover; an oil inlet communicating with the annular oil passage is provided on the side of the can cover; an oil outlet is provided at the center of the can cover; and a first external threaded ring and a second external threaded ring are fixedly arranged coaxially on the lower end face of the can cover.

[0011] As a preferred embodiment of this utility model, when the tank body and the tank cover are connected and installed, the upper end of the cylinder is placed in the upper part of the annular oil passage, and the cylinder fits against the small diameter annular surface of the annular oil passage; the inner annular ridge of the cylinder is beveled; the second external threaded ring is threadedly connected to the first internal threaded ring.

[0012] As a preferred embodiment of this utility model, the oil inlet connector is threadedly connected to the outer end of the oil inlet; the oil outlet connector is threadedly connected to the outer end of the oil outlet.

[0013] As a preferred embodiment of this utility model, the tank support core is a cylindrical tube with a spherical lower end; the tank support core is threadedly connected to the first external threaded ring; the first external threaded ring is placed between the oil inlet and the annular oil passage; oil passage holes are evenly distributed on the tank support core.

[0014] As a preferred embodiment of this utility model, a positioning ring for positioning the end of the filter element is fixed on the bottom surface of the tank body; a plurality of cylinders are arranged in a ring and evenly distributed between the positioning ring and the cylinders.

[0015] As a preferred embodiment of this utility model, a rectangular flange is provided at the lower end of the tank body.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model achieves dual filtration of hydraulic oil by using evenly distributed magnetic rods inside the tank to adsorb metal filings in the hydraulic oil, combined with the use of a filter element to filter non-metallic impurities, thus significantly improving the cleanliness of the hydraulic system. The evenly distributed magnetic rods create a flow around the spiraling hydraulic oil, effectively dispersing the flow pressure and avoiding direct, concentrated impact on the filter element. This reduces the risk of wear and clogging of the filter element, extending its service life.

[0018] 2. The clockwise / counterclockwise downward diagonal guide holes on the annular plate of the tank body of this utility model make the hydraulic oil form a ring spiral motion, which enhances the filtration effect and disperses the flow pressure of the hydraulic oil.

[0019] 3. The support core of this utility model plays a supporting role inside the filter element, ensuring the stability of the filter element under instantaneous impact and high flow filtration, and meeting the high flow filtration requirements of the hydraulic system.

[0020] 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

[0021] 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.

[0022] Figure 1 This is a schematic diagram of the hydraulic station return oil filtration device of this utility model.

[0023] Figure 2 for Figure 1 A schematic diagram of the axial section.

[0024] Figure 3 This is a schematic diagram of the tank's structure.

[0025] Figure 4 This is a schematic diagram of the can lid.

[0026] Figure 5 This is a schematic diagram of the structure supporting the core cylinder.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1-Tank body, 2-Tank cover, 3-Filter element, 4-Support core cylinder, 5-Magnetic rod, 6-Oil inlet connector, 7-Oil outlet connector, 11-Circular ring plate, 12-Guide hole, 13-Cylinder, 14-Insertion hole, 15-Positioning ring, 16-Rectangular flange, 21-Annular oil passage, 22-Oil inlet, 23-Oil outlet, 24-First external threaded ring, 25-Second external threaded ring, 41-Oil passage hole. 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 scope of protection of the present utility model. Specific Implementation Example 1:

[0031] Please see Figure 1-5 As shown, this utility model is a hydraulic station return oil filtration device to ensure the cleanliness and stability of the hydraulic system. The device includes key components such as a tank body 1, a tank cover 2, a filter element 3, a support core cylinder 4, and a magnetic rod 5.

[0032] The tank body 1 serves as the main body of the entire filtration device. The inner wall of the upper port of the tank body 1 is provided with a first internal thread for threaded connection with the tank cover 2. A circular ring plate 11 is fixed inside the tank body 1. The circular ring plate 11 has a ring of evenly distributed, clockwise / counterclockwise downward-sloping guide holes 12. The design of these guide holes 12 allows the hydraulic oil entering the tank body 1 from the tank cover 2 to form a circular spiral motion. A cylinder 13 is fixed to the inner ring surface of the circular ring plate 11, with its lower end positioned in the middle of the inner cavity of the tank body 1, further guiding the flow path of the hydraulic oil. A ring of insertion holes 14 is evenly distributed on the inner bottom surface of the tank body 1 for inserting and installing magnetic rods 5 to adsorb metal filings in the hydraulic oil. In addition, a positioning ring 15 is fixed to the inner bottom surface of the tank body 1 for positioning the end of the filter element 3, ensuring the stability of the filter element 3 in the device. A rectangular flange 16 is provided at the lower end of the tank body 1 for easy installation and fixation of the device.

[0033] The lower end of the tank cover 2 has an annular oil passage 21, and the side has an oil inlet 22 communicating with the annular oil passage 21. An oil outlet 23 is located in the center. The lower end face of the tank cover 2 is fixed with a first external threaded ring 24 and a second external threaded ring 25, which are coaxially arranged and used for threaded connection with the support core cylinder 4 and the tank body 1, respectively. When the tank body 1 is connected to the tank cover 2, the upper end of the cylinder 13 is positioned in the upper middle part of the annular oil passage 21 and fits against the small-diameter annular surface of the annular oil passage 21, ensuring that hydraulic oil can smoothly enter the interior of the tank body 1.

[0034] The filter element 3 is fitted onto the outside of the support cylinder 4 to filter iron filings and non-metallic impurities in the hydraulic oil that are not attracted by the magnetic rod 5. The end of the filter element 3 is positioned by a positioning ring 15 to ensure stability under the impact of hydraulic oil.

[0035] The support core 4 is a cylindrical tube with a spherical lower end, threadedly connected to the first external threaded ring 24 of the tank cover 2. Oil passage holes 41 are evenly distributed on the support core 4, allowing hydraulic oil to pass through the filter element 3 for filtration before entering the support core 4 and finally exiting from the oil outlet 23. Simultaneously, the support core 4 provides support within the filter element 3, ensuring the stability of the filter element 3 under instantaneous impact and meeting the requirements of high-flow filtration.

[0036] The magnetic rods 5 are inserted into the insertion holes 14 on the bottom surface of the tank 1. A ring of evenly distributed magnetic rods 5 maximizes the adsorption and filtration effect of metal filings in the hydraulic oil. The evenly distributed magnetic rods 5 also create a flow around the spiraling hydraulic oil. When the hydraulic oil flows through the area of ​​the magnetic rods 5 in a ring-like spiral, the presence of the magnetic rods 5 alters the flow path, creating a flow around the oil. This flow effectively disperses the flow pressure of the hydraulic oil, preventing it from directly impacting the filter element 3 with concentrated force, thus reducing direct impact on the filter element 3, extending its service life, and ensuring the structural stability of the filter element 3 during high-flow filtration.

[0037] The magnetic rod 5 reduces the amount of solid particles entering the filter element 3 by adsorbing metal filings in the hydraulic oil, thereby reducing the risk of clogging and filtration load on the filter element 3, and extending the replacement cycle and service life of the filter element 3.

[0038] The working principle and process of this embodiment are as follows: During the operation of the hydraulic station, the return oil enters the oil inlet 22 of the tank cover 2 through the oil inlet connector 6, and then flows into the annular oil passage 21. Due to the design of the guide holes 12 on the annular plate 11, the hydraulic oil forms an annular spiral motion and enters the interior of the tank 1. During the spiral motion, the hydraulic oil passes through a ring of evenly distributed magnetic rods 5, where metal filings are attracted and filtered out. Subsequently, the hydraulic oil continues to pass through the filter element 3, which filters out other non-metallic impurities. Finally, the filtered hydraulic oil flows out from the oil outlet 23 and returns to the oil tank of the hydraulic system through the oil outlet connector 7.

[0039] When cleaning the return oil filter, simply disassemble the tank 1 and the tank cover 2 to remove the filter element 3 for replacement or cleaning. At the same time, the magnetic rod 5 can also be quickly removed from the tank 1 to clean the iron filings and sludge adsorbed on its surface, ensuring the continuous and efficient operation of the filter.

[0040] In summary, this utility model, a hydraulic station return oil filtration device, achieves efficient filtration of hydraulic station return oil through reasonable structural design and working principle, ensuring the cleanliness and stability of the hydraulic system.

[0041] 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.

[0042] 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 station return oil filtration device, characterized in that: Includes tank body (1), tank lid (2), filter element (3), support core cylinder (4), and magnetic rod (5); The tank body (1) is threadedly connected to the tank cover (2); The support core cylinder (4) is threadedly connected to the can lid (2); the filter element (3) is sleeved and installed on the outside of the support core cylinder (4); A magnetic rod (5) is inserted and installed inside the tank (1).

2. The hydraulic station return oil filtration device according to claim 1, characterized in that, The tank body (1) is equipped with an oil inlet connector (6) and an oil outlet connector (7).

3. The hydraulic station return oil filtration device according to claim 2, characterized in that, The tank (1) includes a first internal thread on the inner wall of the upper port, and a ring plate (11) fixed below the first internal thread; a ring of evenly distributed clockwise / counterclockwise diagonally downward guide holes (12) is opened on the ring plate (11); a cylinder (13) is fixed on the inner ring surface of the ring plate (11); a ring of evenly distributed insertion holes (14) for inserting and installing the magnetic rod (5) is opened on the inner bottom surface of the tank (1); the lower end of the cylinder (13) is placed in the middle of the inner cavity of the tank (1).

4. The hydraulic station return oil filtration device according to claim 3, characterized in that, The lower end of the can cover (2) is provided with an annular oil passage (21); the side of the can cover (2) is provided with an oil inlet (22) communicating with the annular oil passage (21); the center of the can cover (2) is provided with an oil outlet (23); the lower end face of the can cover (2) is fixed with a first external thread ring (24) and a second external thread ring (25) arranged coaxially.

5. The hydraulic station return oil filtration device according to claim 4, characterized in that, When the tank body (1) is connected and installed with the tank cover (2), the upper end of the cylinder (13) is placed in the upper part of the annular oil passage (21), and the cylinder (13) fits the small diameter annular surface of the annular oil passage (21); the inner annular edge of the cylinder (13) is beveled; the second external thread ring (25) is threadedly connected to the first internal thread.

6. The hydraulic station return oil filtration device according to claim 4 or 5, characterized in that, The oil inlet connector (6) is threaded to the outer end of the oil inlet (22); the oil outlet connector (7) is threaded to the outer end of the oil outlet (23).

7. The hydraulic station return oil filtration device according to claim 4, characterized in that, The tank support core (4) is a cylindrical tube with a spherical surface at the lower end; the tank support core (4) is threadedly connected to the first external threaded ring (24); the first external threaded ring (24) is placed between the oil inlet (22) and the annular oil passage (21); oil passage holes (41) are evenly distributed on the tank support core (4).

8. The hydraulic station return oil filtration device according to claim 3, characterized in that, The bottom surface of the tank (1) is fixed with a positioning ring (15) for positioning the end of the filter element (3); a plurality of cylinders (13) are arranged in a ring and placed between the positioning ring (15) and the cylinders (13).

9. The hydraulic station return oil filtration device according to claim 1 or 3, characterized in that, A rectangular flange (16) is provided at the lower end of the tank body (1).

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