A liquid backflushing oil filter system

Abstract

The utility model discloses a kind of oil filtering systems of liquid back flushing, it includes dirty liquid tank, clean liquid tank and several filter tanks, filter element is arranged in the filter tank, the filter tank includes liquid inlet and liquid outlet, all the liquid inlet is connected dirty liquid tank by pipeline, all the liquid outlet is communicated at least one liquid collecting pipe, the liquid collecting pipe is connected clean liquid tank by liquid outlet pipe;One back flushing pipeline connects clean liquid tank and liquid collecting pipe, further include one back flushing pump, which is communicated back flushing pipeline to send oil in clean liquid tank into filter tank through liquid outlet reversely.The beneficial effects of the utility model are: using clean liquid to back flush, improve the pressure of back flushing, obtain better cleaning effect, and low noise;Size closure cap is separately arranged, improve the convenience of overhaul.

Description

Technical Field

[0001] This utility model relates to the field of oil filtration technology, and in particular to an oil filtration system with liquid backflushing. Background Technology

[0002] Oil filtration is used to filter and reuse coolant recovered from processing equipment. A filter element is installed inside the filter tank. After a period of filtration, liquid residue accumulates on the filter element, reducing the filtration efficiency of the filter tank. To solve this problem, the applicant provides a structure that uses high-pressure air to be reverse-flowed into the filter tank to force the liquid residue out. However, the pressure of the high-pressure air is limited, restricting its removal capacity, and it also generates noise. Furthermore, in existing structures, the sealing structure at the top of multiple filter tanks is a single component, requiring the use of lifting equipment to open and maintain the tanks, which is very inconvenient. Utility Model Content

[0003] The purpose of this invention is to provide a liquid backflushing oil filtration system that solves or partially solves the above-mentioned technical problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A liquid backflushing oil filtration system includes a dirty liquid tank, a clean liquid tank, and several filter tanks. Each filter tank contains a filter element and includes an inlet and an outlet. All inlets are connected to the dirty liquid tank via pipes, and all outlets are connected to at least one manifold. The manifold is connected to the clean liquid tank via an outlet pipe. A backflushing pipe connects the clean liquid tank and the manifold. The system also includes a backflushing pump that connects to the backflushing pipe to reverse the flow of oil from the clean liquid tank through the outlet into the filter tank.

[0006] Preferably, the filter tanks are arranged symmetrically in two rows, each row including 2-8 filter tanks, and each row is provided with a liquid collection pipe. The filter tanks in the same row are all connected to the same liquid collection pipe.

[0007] Preferably, the backflush pump is installed inside the clean liquid tank, the lower part of the backflush pipe is connected to the backflush pump, the upper part of the backflush pipe is connected to a four-way valve, each of the four-way valves is connected to a three-way valve that can cut off either end, the upper part of the three-way valve is connected to the manifold, and the other end of the three-way valve is connected to the clean liquid tank; a pressure gauge is installed on the top of the four-way valve.

[0008] Preferably, it also includes a bottom plate and a top plate that are parallel to each other, and all the filter tanks are fixedly installed between the bottom plate and the top plate by welding, with the liquid collection pipe located at the bottom of the top plate.

[0009] Preferably, the top plate is provided with a plurality of openings connecting to the manifold, and a plurality of threaded holes are provided around the openings. Each filter tank has an opening at the top. A flange is provided on the top plate and fitted onto the filter tank. The flange is welded to the top plate. A large cap is fixedly connected to the flange with screws to close the filter tank. A small cap closes the openings with screws provided in the threaded holes. The large cap is connected to one of the small caps through a U-shaped connecting pipe.

[0010] Preferably, a high-pressure gas interface is provided on the manifold.

[0011] The advantages of this invention are: the use of cleaning liquid for backflushing increases the backflushing pressure, resulting in better cleaning effect and lower noise; the separate design of large and small caps improves the convenience of maintenance. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the first embodiment of the present utility model;

[0013] Figure 2 This is a front view structural diagram of the first embodiment of this utility model. Detailed Implementation

[0014] The technical solution of this utility model will be further described in detail below with reference to specific embodiments.

[0015] In the description of this utility model, it should be noted that the terms "inner", "outer", "upper", "lower", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing 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 this utility model.

[0016] like Figures 1 to 2As shown, the liquid backflushing oil filtration system of this utility model includes a dirty liquid tank (not shown), a clean liquid tank (not shown), and several filter tanks 14 disposed above the dirty liquid tank. The dirty liquid tank and clean liquid tank are conventional box structures used to store dirty and clean liquids, and their structure itself is not the innovation of this utility model, so they are not shown. Each filter tank 14 contains a filter element (not shown). Each filter tank 14 includes an inlet (not shown) and an outlet (not shown), with the inlet located at the bottom and the outlet at the top. All inlets are connected to the dirty liquid tank via pipes. The filter tanks 14 are arranged symmetrically in two rows, with each row including 2-8 filter tanks 14. Each row has a manifold 16, and the filter tanks 14 in the same row are all connected to the same manifold 16 via pipes. The manifold 16 is connected to the clean liquid tank via an outlet pipe 18; a backflushing pipe 20 connects the clean liquid tank and the manifold 16.

[0017] It also includes a backflush pump (not shown) connected to the backflush pipe 20 to reverse the flow of oil from the clean liquid tank into the filter tank 14 through the outlet. The backflush pump is located inside the clean liquid tank. The backflush pipe 20 is connected to the backflush pump at the bottom and a four-way valve 22 at the top. Each side of the four-way valve 22 is connected to a three-way valve 24 that can shut off either end. The three-way valve 24 is connected to the manifold 16 at the top and to the clean liquid tank at the other end. A pressure gauge 26 is installed at the top of the four-way valve 22 to monitor the backflush pressure and improve safety.

[0018] It also includes a bottom plate 28 and a top plate 30 that are parallel to each other. All filter tanks 14 are fixedly installed between the bottom plate 28 and the top plate 30 by welding. The liquid collection pipe 16 is located at the bottom of the top plate 30.

[0019] The top plate 30 has several openings (not shown) for connecting the manifold 16. Several threaded holes (not shown) are provided around the openings. Each filter tank 14 has an opening at the top. A flange 32 is provided on the top plate 30 and fitted onto the filter tank 14. The flange 32 is welded to the top plate 30. A large cover 34 is fixedly connected to the flange 32 with screws to close the filter tank 14. A small cover 36 closes the opening with screws provided in the threaded holes. The large cover 34 is connected to the small cover 36 through a U-shaped connecting pipe 38.

[0020] Furthermore, a high-pressure air interface 40 is provided on the manifold 16 to select high-pressure air backflushing as needed.

[0021] This utility model has two working states: filtration and backflushing. Its working principle is as follows:

[0022] Filtration: A liquid pump (not shown, located inside the dirty liquid tank) sends dirty liquid from bottom to top into the filter tank 14. After filtration by the filter element, the clean liquid enters the manifold 16 from the outlet, then flows through the outlet pipe 18 and the three-way valve 24 into the clean liquid tank, completing the filtration process. At this time, the three-way valve 24 is set to block the backflush pipe 20, while the other two ends are open.

[0023] Backflush: The backflush pump sends the clean liquid from the clean liquid tank into the filter tank 14 through the four-way valve 22, the three-way valve 24, and the outlet pipe 18, squeezing the liquid residue in the backflush pump and causing it to be discharged from the inlet into the dirty liquid tank or into the sludge scraper (not shown) through other pipelines. At this time, the three-way valve 24 is set to a state where one end connected to the clean liquid tank is blocked, while the other two ends are open.

[0024] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A liquid backflushing oil filtration system, comprising a dirty liquid tank, a clean liquid tank, and a plurality of filter tanks, wherein filter elements are disposed within the filter tanks, characterized in that: Each filter tank includes an inlet and an outlet. All inlets are connected to the dirty liquid tank via pipes, and all outlets are connected to at least one manifold. The manifold is connected to the clean liquid tank via an outlet pipe. A backflush pipe connects the clean liquid tank and the manifold. The filter tank also includes a backflush pump that connects to the backflush pipe to send the oil in the clean liquid tank back into the filter tank through the outlet.

2. The liquid backflushing oil filtration system according to claim 1, characterized in that, The filter tanks are arranged symmetrically in two rows, with each row including 2-8 filter tanks. Each row is provided with a liquid collection pipe, and the filter tanks in the same row are all connected to the same liquid collection pipe.

3. The liquid backflushing oil filtration system according to claim 2, characterized in that, The backflush pump is installed inside the clean liquid tank. The backflush pipe is connected to the backflush pump at the bottom and a four-way valve is connected to the top of the backflush pipe. Each pipe on both sides of the four-way valve is connected to a three-way valve that can cut off either end. The top of the three-way valve is connected to the manifold, and the other end of the three-way valve is connected to the clean liquid tank. A pressure gauge is installed on the top of the four-way valve.

4. The liquid backflushing oil filtration system according to claim 1, characterized in that, It also includes a bottom plate and a top plate that are parallel to each other. All the filter tanks are fixedly installed between the bottom plate and the top plate by welding. The liquid collection pipe is located at the bottom of the top plate.

5. The liquid backflushing oil filtration system according to claim 4, characterized in that, The top plate has several openings connecting to the manifold, and several threaded holes are provided around the openings. Each filter tank has an opening at the top. A flange is provided on the top plate and fitted onto the filter tank. The flange is welded to the top plate. A large cover is fixedly connected to the flange with screws to close the filter tank. A small cover closes the openings with screws provided in the threaded holes. The large cover is connected to one of the small covers through a U-shaped connecting pipe.

6. The liquid backflushing oil filtration system according to claim 1, characterized in that, A high-pressure gas interface is provided on the manifold.

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