Plate and frame filter for insulating oil

Abstract

The utility model discloses a plate frame filter for insulating oil, which relates to the technical field of plate frame filters and comprises a machine body component, a plurality of plate frame components, an oil discharge pipe, a settling box and a filter screen, the plate frame components are mounted at the top of the machine body component, the oil discharge pipe is fixedly inserted into the bottoms of the plate frame components, and the settling box is mounted on one side of the machine body component. The bottom of the oil discharge pipe is opposite to the inner cavity of the settling box; the filter screen is fixedly mounted at the top of the inner cavity of the settling box. Through the arrangement mode that the machine body assembly and the plate frame assembly are matched, the machine body assembly extrudes the plate frame assembly, so that oil entering the inner cavity of the plate frame assembly can be filtered by the filter paper, the filtered oil can enter the settling box through the oil discharge pipe to be settled, and meanwhile, through the inner structure of the plate frame assembly, the settling effect is greatly improved. The phenomenon that the filter paper is extruded to move is avoided, stable filtration of the oil body is improved, discharge of filter residues is reduced, and the filtering effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of plate and frame filter technology, and in particular to a plate and frame filter for insulating oil. Background Technology

[0002] Insulating oil is a type of lubricating oil formulated by adding antioxidants to deeply refined lubricating oil base oil. It is primarily used as a dielectric in electrical equipment. The main properties of electrical insulating oil are low-temperature performance, oxidation stability, and dielectric loss. Currently, insulating oils require filtration during production.

[0003] Traditionally, plate and frame filters are used to filter insulating oil. This involves removing impurities from the insulating oil through the filter paper inside the plate and frame. However, the filter paper on the plate and frame is easily squeezed and moved at the edges due to the pressure of the filter residue or the flow of oil. This results in the original oil not being filtered at the edges of the filter paper, and the filter paper not being able to cover the filter groove. As a result, the filter residue can easily flow into the filtered oil from the edges of the filter paper, leading to poor filtration. Utility Model Content

[0004] The purpose of this invention is to provide a plate and frame filter for insulating oil to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a plate and frame filter for insulating oil, comprising:

[0006] Body components;

[0007] Plate and frame assemblies, multiple of which are mounted on top of the body assembly, are used for filtering insulating oil, and the body assembly is used for feeding insulating oil and squeezing and pushing the multiple plate and frame assemblies.

[0008] An oil drain pipe is fixedly inserted into the bottom of the plate and frame assembly;

[0009] A sedimentation box is installed on one side of the machine body assembly, and the bottom of the oil drain pipe is positioned opposite to the inner cavity of the sedimentation box.

[0010] A filter screen is fixedly installed at the top of the inner cavity of the sedimentation box.

[0011] Preferably, the body component includes:

[0012] A frame, which is connected to a sedimentation box via connectors;

[0013] A fixing plate, which is fixed to one end of the frame;

[0014] A thrust plate, which is mounted on the other end of the frame via a hydraulic cylinder, is used to push the plate and frame assembly.

[0015] Liquid inlet, which is installed on the top of the fixed plate.

[0016] Preferably, the plate frame assembly includes:

[0017] The filter plate is mounted between the fixed plate and the thrust plate;

[0018] A liquid inlet tank is provided on the top of the filter plate;

[0019] Retention groove, the retention groove being formed on the surface of the filter plate;

[0020] The card slot is U-shaped and located on the inner side of the inner wall of the retention groove;

[0021] Filter paper, wherein the filter paper is snapped into the inner cavity of the slot;

[0022] A plurality of filter tanks are equidistantly disposed at the bottom of a retention tank, and an oil drain pipe is inserted into the inner cavity of one of the filter tanks.

[0023] Preferably, the filter tank is connected to the inner cavity of two adjacent retention tanks, and the inner cavities of the plurality of filter tanks are connected.

[0024] Preferably, the filter paper is attached to the inner wall of the retention tank, and the filter paper is used to filter the oil outside the filter tank.

[0025] Preferably, the inner cavity of the liquid inlet tank is connected to the inner cavity of the retention tank, and the inner cavity of the liquid inlet tank is arranged opposite to the inner cavity of the liquid inlet.

[0026] The technical effects and advantages of this utility model are as follows:

[0027] This invention utilizes a combination of a body assembly and a plate and frame assembly. By squeezing the plate and frame assembly with the body assembly, the oil entering the inner cavity of the plate and frame assembly is filtered by the filter paper. The filtered oil then flows through the oil drain pipe into the sedimentation box for sedimentation. Simultaneously, the internal structure of the plate and frame assembly prevents the filter paper from being squeezed and moved, thereby improving the stability of oil filtration, reducing the discharge of filter residue, and enhancing the filtration effect. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0029] Figure 2 This is a schematic diagram of the overall front structure of this utility model.

[0030] Figure 3 This is a side cross-sectional view of the filter plate of this utility model.

[0031] Figure 4 This is a partial structural diagram of the front of the filter plate of this utility model.

[0032] In the diagram: 1. Body assembly; 11. Frame; 12. Fixing plate; 13. Thrust plate; 14. Liquid inlet; 2. Plate and frame assembly; 21. Filter plate; 22. Liquid inlet tank; 23. Retention tank; 24. Slot; 25. Filter paper; 26. Filter tank; 3. Oil drain pipe; 4. Sedimentation box; 5. Filter screen. Detailed Implementation

[0033] 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.

[0034] This utility model provides, for example Figure 1-4 The plate and frame filter press for insulating oil shown includes a body assembly 1, a plate and frame assembly 2, an oil drain pipe 3, a settling box 4, and a filter screen 5. Multiple plate and frame assemblies 2 are installed on top of the body assembly 1. The plate and frame assemblies 2 are used for filtering the insulating oil. The body assembly 1 is used for feeding the insulating oil and for squeezing and pushing the multiple plate and frame assemblies 2. The oil drain pipe 3 is fixedly inserted through the bottom of the plate and frame assemblies 2. The settling box 4 is installed on one side of the body assembly 1. The bottom of the oil drain pipe 3 is positioned opposite to the inner cavity of the settling box 4, facilitating a stable flow of filtered oil discharged from the inner cavity of the oil drain pipe 3 into the inner cavity of the settling box 4. The filter screen 5 is fixedly installed on the top of the inner cavity of the settling box 4. The filter screen 5 prevents external objects, such as wrenches, from falling into the inner cavity of the settling box 4 during operation, further improving the filtration stability of the oil in the inner cavity of the settling box 4. This also facilitates the discharge of the filtered insulating oil from the inner cavity of the settling box 4 through the connecting oil pipe.

[0035] The machine body assembly 1 includes a frame 11, a fixing plate 12, a thrust plate 13, and a liquid inlet 14. The frame 11 is connected to the sedimentation box 4 via a connector. The fixing plate 12 is fixed to one end of the frame 11. The thrust plate 13 is installed at the other end of the frame 11 via a hydraulic cylinder. That is, by starting the hydraulic cylinder, the thrust plate 13 can reciprocate at the top of the inner cavity of the frame 11. The thrust plate 13 is used to push the plate and frame assembly 2. The liquid inlet 14 is installed on the top of the fixing plate 12 and is connected to an insulating oil pipe with a filter, so that the filtered oil can enter the inner cavity of the plate and frame assembly 2 through the liquid inlet 14 for filtration.

[0036] Specifically, the plate and frame assembly 2 includes a filter plate 21, an inlet tank 22, a retention tank 23, a slot 24, filter paper 25, and a filter groove 26. The filter plate 21 is mounted between the fixed plate 12 and the thrust plate 13. The filter plate 21 has a rectangular plate structure, and both its front and back surfaces are made of rubber, which facilitates tight compression between adjacent filter plates 21 when they are pressed together. Supporting blocks are fixed to both sides of the filter plate 21. The supporting blocks have a triangular structure, allowing the filter plate 21 to be stably mounted in the inner cavity of the frame 11 via the supporting blocks, and the outermost edge is supported by the thrust plate 13. The compression of one of the filter plates 21 on the side causes multiple filter plates 21 to be stably fitted between the thrust plate 13 and the fixing plate 12. An inlet groove 22 is formed on the top of the filter plate 21, and the inlet groove 22 is positioned opposite to the inner cavity of the inlet port 14. The fit between the multiple filter plates 21 allows the inner cavities of the multiple inlet grooves 22 to communicate with the inner cavity of the inlet port 14, facilitating the stable entry of filtered insulating oil into the inner cavity of the multiple inlet grooves 22. A retention groove 23 is formed on the surface of the filter plate 21, and the inner cavities of the inlet grooves 22 and the retention groove 23 communicate with each other, facilitating liquid intake. Oil in the inner cavity of groove 22 can enter the inner cavity of retention groove 23. A U-shaped slot 24 is formed on the inner wall of retention groove 23. Filter paper 25 is snapped into the inner cavity of slot 24. The three periphery of filter paper 25 is snapped into the inner cavity of slot 24, stabilizing it within retention groove 23. Filter paper 25 adheres to the inner wall of retention groove 23. Multiple filter grooves 26 are equidistantly located at the bottom of retention groove 23. Filter paper 25 is used for filtering oil outside filter grooves 26. Oil drain pipe 3 is inserted into the inner cavity of one of filter grooves 26. Filter groove 26 communicates with the inner cavities of two adjacent retention grooves 23. The inner cavities of multiple filter tanks 26 are interconnected. Oil flowing into the inner cavity of the retention tank 23 flows into the inner cavity of the filter tank 26 under gravity. At the same time, filter residue falls and is placed at the bottom of the inner cavity of the retention tank 23, which squeezes the filter paper 25 against the inner wall of the retention tank 23, stabilizing the position of the filter paper 25. Meanwhile, the filter paper 25 is stuck in the inner cavity of the slot 24, further improving the stability of the position of the filter paper 25 at the corners and reducing the phenomenon of filter residue entering the inner cavity of the filter tank 26 from the corners of the filter paper 25. This allows the filtered oil to enter the inner cavity of the filter tank 26 and be stably discharged through the oil drain pipe 3.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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. A plate and frame filter press for insulating oil, characterized in that, include: Body components (1); Plate and frame assembly (2), multiple plate and frame assemblies (2) are installed on the top of the body assembly (1), the plate and frame assembly (2) is used for filtering insulating oil, and the body assembly (1) is used for feeding insulating oil and squeezing and pushing multiple plate and frame assemblies (2); Oil drain pipe (3), which is fixedly inserted into the bottom of plate frame assembly (2); Sedimentation box (4), the sedimentation box (4) is installed on one side of the body assembly (1), and the bottom of the oil drain pipe (3) is arranged opposite to the inner cavity of the sedimentation box (4); The filter screen (5) is fixedly installed on the top of the inner cavity of the sedimentation box (4).

2. A plate and frame filter for insulating oil according to claim 1, characterized in that, The body component (1) includes: A frame (11) is connected to a sedimentation box (4) via a connector; A fixing plate (12) is fixed to one end of the frame (11); Thrust plate (13), which is mounted on the other end of the frame (11) by a hydraulic cylinder, is used to push the plate frame assembly (2); Liquid inlet (14) is installed on the top of the fixing plate (12).

3. A plate and frame filter for insulating oil according to claim 2, characterized in that, The plate frame assembly (2) includes: Filter plate (21), which is mounted between fixed plate (12) and thrust plate (13); Liquid inlet tank (22), which is located on the top of filter plate (21); A retention groove (23) is formed on the surface of the filter plate (21); The slot (24) is U-shaped and located on the inner side of the inner wall of the retention groove (23); Filter paper (25), which is snapped into the inner cavity of the slot (24); Filter tanks (26), a plurality of filter tanks (26) are equally spaced at the bottom of retention tank (23), and oil drain pipe (3) is inserted into the inner cavity of one of the filter tanks (26).

4. A plate and frame filter for insulating oil according to claim 3, characterized in that, The filter tank (26) communicates with the inner cavity of two adjacent retention tanks (23), and the inner cavities of multiple filter tanks (26) are interconnected.

5. A plate and frame filter for insulating oil according to claim 3, characterized in that, The filter paper (25) is attached to the inner wall of the retention tank (23), and the filter paper (25) is used to filter the oil outside the filter tank (26).

6. A plate and frame filter for insulating oil according to claim 3, characterized in that, The inner cavity of the liquid inlet tank (22) is connected to the inner cavity of the retention tank (23), and the inner cavity of the liquid inlet tank (22) is opposite to that of the liquid inlet (14).

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