A filter device for treating waste transformer oil

By designing an oil filtration device with continuously curved oil passages and inlet/outlet filter screens, the problems of low efficiency and high dielectric loss in existing oil filtration devices have been solved, achieving a more efficient oil filtration effect and stable operation.

CN224345558UActive Publication Date: 2026-06-12WUHAN HUANDONG TECHNOLOGY DEVELOPMENT CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WUHAN HUANDONG TECHNOLOGY DEVELOPMENT CO LTD
Filing Date
2025-05-07
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

The filtration efficiency of existing transformer oil filtration devices needs to be further improved, as the adsorbent is easily carried away by the oil, resulting in high dielectric loss.

Method used

The design employs a continuous curved oil passage channel consisting of two sets of reverse-interlocking filter element frames and a multi-layer filter element body, which increases the contact area and time between the oil and the adsorbent. Filter screens are installed at the oil inlet and outlet to prevent adsorbent loss.

🎯Benefits of technology

It significantly improves oil filtration efficiency, prolongs the contact time between the adsorbent and the oil, enhances the practicality and stability of the device, and reduces the risk of high dielectric loss.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224345558U_ABST
    Figure CN224345558U_ABST
Patent Text Reader

Abstract

The utility model discloses a kind of oil filter units for processing waste transformer oil, it is related to waste transformer oil processing technical field, including filter cylinder, the side of filter cylinder is provided with oil inlet, the other side of filter cylinder is provided with oil outlet, and the inside of filter cylinder is provided with filter core, the filter core includes two groups of filter core frame, two groups of filter core frame are reversely buckled together, and equidistant multilayer installation space is formed between two groups of the filter core frame, filter core body is arranged in each layer installation space, oil passage for being used for transformer oil passage is also provided on the filter core frame. The utility model filter core is mainly composed of two groups of reversely buckled filter core frame and multilayer filter core body, forms continuous curved oil circuit passage, when using waste transformer oil through the filter core, the contact area and time of oil and adsorbent in filter core can be greatly extended, in turn to improve adsorption efficiency, effectively improve the use effect of changing device.
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Description

Technical Field

[0001] This utility model relates to the field of waste transformer oil treatment technology, specifically an oil filtration device for treating waste transformer oil. Background Technology

[0002] Existing transformer oil filtration devices generally store the adsorbent in an adsorption tank. The adsorption tank has a simple structure. Oil enters the adsorption tank containing the oil adsorbent from the oil inlet, and after adsorption, it exits through the oil outlet.

[0003] The filter cartridge for waste transformer oil is a key component of any oil filtration system, primarily used to remove impurities, moisture, and some dissolved gases from the oil. The design and selection of the filter cartridge directly affect the treatment effect and the operating efficiency of the equipment. A utility model patent with Chinese patent publication number CN208541891U discloses an oil filtration device for treating waste transformer oil. This device does not allow the oil to enter the filter element containing the adsorbent directly from the bottom, but rather from the side, increasing the contact area between the oil and the adsorbent and improving adsorption efficiency. By placing a first filter screen outside the filter element and adding a second filter screen at the oil outlet, it prevents the adsorbent from being carried away by the oil during adsorption, thus preventing clogging and high dielectric losses. Using bottom-to-top oil entry not only increases the adsorption area but also extends the contact time between the oil and the adsorbent, further improving adsorption efficiency. However, research on existing technologies and the aforementioned patent reveals that the filtration efficiency of existing devices still needs further improvement. Therefore, this utility model proposes an oil filtration device for treating waste transformer oil. Summary of the Invention

[0004] Technical problems to be solved

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an oil filtration device for treating waste transformer oil.

[0006] Technical solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: an oil filtration device for treating waste transformer oil, comprising an oil filter cylinder, an oil inlet on one side of the oil filter cylinder, an oil outlet on the other side of the oil filter cylinder, and a filter element inside the oil filter cylinder.

[0008] The filter element includes two sets of filter element frames, which are snapped together in opposite directions, forming equidistant multi-layer installation spaces between them. Each layer of the installation space contains a filter element body. The filter element frames also have oil channels for transformer oil to pass through. The filter element of this utility model is mainly composed of two sets of reverse-interlocking filter element frames and multi-layer filter element bodies, forming a continuous and curved oil passage. When waste transformer oil passes through this filter element, the contact area and time between the oil and the adsorbent in the filter element can be greatly extended, thereby improving the adsorption efficiency, effectively improving the performance of the device, and enhancing its practicality.

[0009] Preferably, filter screens are provided on both sides of the filter element.

[0010] Preferably, the filter screen includes a first filter screen located above the oil inlet, and the filter screen also includes a second filter screen located below the oil outlet. The first and second filter screens are configured to prevent the adsorbent from being carried away by the oil during the adsorption process, thus preventing clogging of the device and causing excessive dielectric loss.

[0011] Preferably, the oil filter cylinder is composed of a cylinder and a sealing cap. One side of the cylinder is provided with a connecting thread, and one side of the sealing cap is provided with a connecting thread. The cylinder and the sealing cap are threadedly connected.

[0012] Preferably, a sealing gasket is provided inside the cylinder.

[0013] Preferably, the sealing cap has a threaded hole inside, and the number of threaded holes is at least one. The threaded hole is connected to a limiting stud, one end of which abuts against the cylinder. The limiting stud can hold the cylinder in place, thereby enhancing the connection stability between the cylinder and the sealing cap, effectively improving the performance of the device and enhancing its practicality.

[0014] Preferably, one end of the limiting stud abuts against the cylinder.

[0015] Beneficial effects:

[0016] Compared with existing technologies, this oil filtration device for treating waste transformer oil has the following advantages:

[0017] The filter element of this utility model mainly consists of two sets of reverse-interlocking filter element frames and a multi-layer filter element body, forming a continuous curved oil passage. When the waste transformer oil passes through the filter element, the contact area and time between the oil and the adsorbent in the filter element can be greatly extended, thereby improving the adsorption efficiency, effectively improving the performance of the device, and enhancing the practicality of the device. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0019] Figure 1 This is a schematic diagram of the disassembled structure of this utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0021] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0022] Figure 4 This is a schematic diagram of the filter element frame of this utility model;

[0023] Figure 5 This utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0024] In the picture:

[0025] 1. Oil filter cylinder; 2. Oil inlet; 3. Oil outlet; 4. Filter element; 5. Filter screen; 401. Filter element frame; 402. Oil passage; 403. Installation space; 404. Filter element body; 501. First filter screen; 502. Second filter screen; 101. Cylinder; 102. Sealing cap; 103. Sealing gasket; 1022. Threaded hole; 1021. Connecting thread two; 1023. Limiting stud; 1011. Connecting thread one. Detailed Implementation

[0026] 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.

[0027] Please see Figures 1-5 As shown, this utility model provides a technical solution: an oil filtration device for treating waste transformer oil, including an oil filter cylinder 1, an oil inlet 2 on one side of the oil filter cylinder 1, an oil outlet 3 on the other side of the oil filter cylinder 1, and a filter element 4 inside the oil filter cylinder 1.

[0028] The filter element 4 in this application includes two sets of filter element frames 401, which are snapped together in opposite directions, and form an equidistant multi-layer installation space 403 between the two sets of filter element frames 401. Each layer of installation space 403 is provided with a filter element body 404. The filter element frame 401 is also provided with an oil channel 402 for transformer oil to pass through. The filter element 4 of this utility model is mainly composed of two sets of filter element frames 401 snapped together in opposite directions and a multi-layer filter element body 404, forming a continuous curved oil passage. When the waste transformer oil passes through the filter element 4, the contact area and time between the oil and the adsorbent in the filter element 4 can be greatly extended, thereby improving the adsorption efficiency, effectively improving the use effect of the device, and enhancing the practicality of the device.

[0029] Please refer to the following carefully. Figure 3 The filter element 4 is provided with filter screens 5 on both sides. The filter screens 5 include a first filter screen 501 located above the oil inlet 2 and a second filter screen 502 located below the oil outlet 3. The first filter screen 501 and the second filter screen 502 are configured in the same way as the two filters mentioned in the prior art, which are used to prevent the adsorbent from being carried away by the oil during the adsorption process, clogging the device and causing the medium loss to be too high.

[0030] Please refer to the following carefully. Figure 1 and Figure 2 The oil filter cylinder 1 consists of a cylinder 101 and a sealing cover 102. One side of the cylinder 101 is provided with a connecting thread 1011, and one side of the sealing cover 102 is provided with a connecting thread 1021. The cylinder 101 and the sealing cover 102 are threaded together. A sealing gasket 103 is provided inside the cylinder 101. The sealing gasket 103 is used to seal the cylinder 101 and the sealing cover 102, so that the sealing effect between the sealing cylinder 101 and the sealing cover 102 is better and the practicality of the device is improved.

[0031] Please refer to the following carefully. Figure 2 and Figure 5 The sealing cover 102 has a threaded hole 1022 inside, and there is at least one threaded hole 1022. The threaded hole 1022 is connected to a limiting stud 1023 inside. One end of the limiting stud 1023 abuts against the cylinder 101. The setting of the limiting stud 1023 can abut against the cylinder 101, thereby enhancing the connection stability between the cylinder 101 and the sealing cover 102, effectively improving the use effect of the device and enhancing its practicality.

[0032] Working principle: The filter element 4 is mainly composed of two sets of filter element frames 401 that are snapped together in opposite directions and a multi-layer filter element body 404, forming a continuous curved oil passage. When the waste transformer oil passes through the filter element 4, the contact area and time between the oil and the adsorbent in the filter element 4 can be greatly extended, thereby improving the adsorption efficiency, effectively improving the performance of the device and enhancing its practicality.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An oil filtration device for treating waste transformer oil, comprising an oil filtration cylinder (1), characterized in that: The oil filter cylinder (1) has an oil inlet (2) on one side and an oil outlet (3) on the other side, and a filter element (4) is provided inside the oil filter cylinder (1). The filter element (4) includes two sets of filter element frames (401), which are fastened together in opposite directions, and form an equidistant multi-layer installation space (403) between the two sets of filter element frames (401). Each layer of the installation space (403) is provided with a filter element body (404), and the filter element frame (401) is also provided with an oil channel (402) for the transformer oil to pass through.

2. The oil filtration device for treating waste transformer oil according to claim 1, characterized in that: The filter element (4) is provided with filter screens (5) on both sides.

3. The oil filtration device for treating waste transformer oil according to claim 2, characterized in that: The filter (5) includes a first filter (501) located above the oil inlet (2) and a second filter (502) located below the oil outlet (3).

4. The oil filtration device for treating waste transformer oil according to claim 1, characterized in that: The oil filter cylinder (1) is composed of a cylinder (101) and a sealing cap (102). The cylinder (101) has a connecting thread one (1011) on one side, and the sealing cap (102) has a connecting thread two (1021) on one side. The cylinder (101) and the sealing cap (102) are threaded together.

5. The oil filtration device for treating waste transformer oil according to claim 4, characterized in that: A sealing gasket (103) is provided inside the cylinder (101).

6. The oil filtration device for treating waste transformer oil according to claim 5, characterized in that: The sealing cap (102) has a threaded hole (1022) inside, and the number of the threaded holes (1022) is at least one. The threaded hole (1022) is connected to a limit stud (1023) inside.

7. The oil filtration device for treating waste transformer oil according to claim 6, characterized in that: One end of the limiting stud (1023) abuts against the cylinder (101).