Oil filtering device

Abstract

The utility model provides an oil filtering device, including filter screen, magnetic bar and end cover, the filter screen is cylindrical, the one end of end cover is fixedly connected with the oil tank, the other end of end cover is sleeved with the one end of filter screen, the other end of filter screen extends into the oil tank, the end cover is also screwed with the plug screw, and the plug screw is screwed with the magnetic bar. One end of the magnetic bar is in threaded connection with the screw plug, and the other end of the magnetic bar extends into the filter screen. By the adoption of the technical scheme, the filter screen and the magnetic bar are sleeved together through the screw plug, when the magnetic bar needs to be cleaned, various impurities attached to the surface of the magnetic bar can be removed only by disassembling the screw plug, when the magnetic bar is installed, the screw plug is screwed in, disassembling and assembling operation is convenient and fast, labor intensity is relieved, and working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil filtering devices, in particular to an oil filtering device. Background Art

[0002] In a hydraulic system, impurities in the oil will cause wear to the hydraulic components and affect the stability of the hydraulic system. In order to ensure the normal operation of each hydraulic component, the oil needs to be filtered or purified. For example, the patent document with the publication number "CN117662960A" discloses an oil purification device for oil pool lubricated grinding rollers, including grinding rollers, internal purification mechanisms, and external circulation purification mechanisms. The oil inlet and oil return port on the grinding rollers are respectively connected to the external circulation purification mechanisms. The grinding rollers are provided with internal purification mechanisms. The grinding rollers are composed of a fixed shaft, a bearing, and a bearing chamber. The internal purification mechanism is composed of a magnetic rod, a visual eyepiece, and a fixed cover. The patented technology improves the speed and efficiency of purifying the oil by providing an external circulation purification mechanism and an internal circulation purification mechanism.

[0003] However, there are two main types of structures of existing oil filtering devices. One type of oil filtering device includes filter paper, which is used to filter high-pressure oil. The filtering speed of the filter paper is slow. When the service life of the filter paper exceeds its maximum life, the filter paper is not convenient to replace, and a large amount of impurities are attached to the surface of the used filter paper, making it inconvenient to clean and reuse the filter paper. In addition, the filter paper generally cannot be used in a low temperature environment below -45°C; the other type of oil filtering device includes a filter screen and a magnetic rod. The filter screen is generally made of metal material, which is easy to clean and replace, and can be used in a low temperature environment below -45°C To maintain normal filtering effect, the magnetic rod is used to absorb various ferromagnetic particles attached to the surface of the filter, thereby extending the service life of the filter and improving the filtering effect of the filter. However, the filtered impurities are generally adsorbed on the surface of the magnetic rod, so the magnetic rod needs to be cleaned regularly. However, in this type of oil filtering device, the filter and the magnetic rod are generally fixed as one. When the magnetic rod needs to be cleaned, the entire oil filtering device has to be disassembled, the magnetic rod is cleaned, and then the entire oil filtering device is assembled. The disassembly and assembly operations are relatively cumbersome and labor-intensive, which affects work efficiency. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an oil filtering device.

[0005] The utility model is realized through the following technical solutions.

[0006] The utility model provides an oil filtering device, comprising a filter screen, a magnetic rod and an end cover, wherein the filter screen is in the shape of a cylinder, one end of the end cover is fixedly connected to an oil tank, the other end of the end cover is sleeved on one end of the filter screen, the other end of the filter screen extends into the oil tank, the end cover is also screwed with a screw plug, one end of the magnetic rod is screwed with the screw plug, and the other end of the magnetic rod extends into the filter screen.

[0007] The surface of the screw plug is also provided with a boss, and the surface of the end cover is provided with a recessed groove, in which the boss is accommodated.

[0008] The boss is in the shape of a regular hexagonal prism.

[0009] The oil filter device also includes a shield and a spring, one end of the spring abuts against the surface of the end cover, the other end of the spring abuts against the surface of the shield, and the shield is sleeved on the port of the filter.

[0010] The oil filtering device also includes a suction pipe, which is sleeved on the port of the filter screen, and the protective cover is clamped between the outer surface of the suction pipe and the inner surface of the filter screen.

[0011] The oil filtering device also includes a first sealing ring, which is clamped between the end cover and the oil tank.

[0012] The oil filtering device also includes a second sealing ring, which is clamped between the screw plug and the end cover.

[0013] The screw plug is in the shape of a stepped shaft as a whole.

[0014] The beneficial effect of the utility model is that: by adopting the technical scheme of the utility model, the filter screen and the magnetic rod are sheathed together through the screw plug. When the magnetic rod needs to be cleaned, it is only necessary to remove the screw plug to remove various impurities attached to the surface of the magnetic rod. When installing the magnetic rod, it is only necessary to screw in the screw plug. The disassembly and assembly operation is convenient, the labor intensity is reduced, and the work efficiency is improved. In addition, when the oil filtering device is used, the oil enters the filter screen through the filter screen port, and the inner surface of the filter screen filters the oil, while the ferromagnetic metal impurities in the oil are adsorbed on the surface of the magnetic rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the front view of the utility model.

[0016] In the figure: 1-filter screen, 2-magnetic bar, 3-end cover, 4-oil tank, 5-screw plug, 6-boss, 7-sink, 8-shield, 9-spring, 10-suction tube, 11-first sealing ring, 12-second sealing ring. DETAILED DESCRIPTION

[0017] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0018] like Figure 1 As shown, the utility model provides an oil filtering device, including a filter screen 1, a magnetic rod 2 and an end cover 3. The filter screen 1 is in the shape of a cylinder. One end of the end cover 3 is fixedly connected to the oil tank 4, and the other end of the end cover 3 is sleeved on one end of the filter screen 1. The other end of the filter screen 1 extends into the oil tank 4. The end cover 3 is also screwed with a screw plug 5. One end of the magnetic rod 2 is screwed with the screw plug 5, and the other end of the magnetic rod 2 extends into the filter screen 1.

[0019] By adopting the technical solution of the utility model, the filter screen and the magnetic rod are sheathed together through the screw plug. When the magnetic rod needs to be cleaned, it is only necessary to remove the screw plug to remove various impurities attached to the surface of the magnetic rod. When installing the magnetic rod, it is only necessary to screw in the screw plug. The disassembly and assembly operations are convenient, which reduces labor intensity and improves work efficiency. In addition, when the oil filtering device is used, the oil enters the filter screen through the filter screen port, and the inner surface of the filter screen filters the oil, while the ferromagnetic metal impurities in the oil are adsorbed on the surface of the magnetic rod.

[0020] Specifically, the filter screen is made of copper alloy material, and the magnetic bar is made of permanent magnet, so that the filter screen and the magnetic bar can maintain normal filtering effect in a low temperature environment below -45°C. The surface of the screw plug 5 is also provided with a boss 6, and the surface of the end cover 3 is provided with a sink 7, and the boss 6 is accommodated in the sink 7. Preferably, the boss 6 is in the shape of a regular hexagonal prism. It is convenient for the operator to use a tool such as a wrench or a socket to apply force to the screw plug, so that the magnetic bar is easy to disassemble and assemble.

[0021] In addition, the oil filter device also includes a shield 8 and a spring 9, one end of the spring 9 abuts against the surface of the end cover 3, and the other end of the spring 9 abuts against the surface of the shield 8, and the shield 8 is sleeved on the port of the filter 1. With the technical solution of the utility model, when the oil enters the filter through the filter port, the pressure of the oil itself will squeeze the spring, causing the spring to deform. When the spring is compressed, the filter will be expanded in the radial direction, thereby supporting the filter, so that the filter always remains in an expanded state, preventing the filter from shrinking, and ensuring the filter effect of the filter on the oil.

[0022] Furthermore, the oil filter device further includes a suction pipe 10, which is sleeved at the port of the filter screen 1, and the shield 8 is clamped between the outer surface of the suction pipe 10 and the inner surface of the filter screen 1. The oil filter device further includes a first sealing ring 11, which is clamped between the end cover 3 and the oil tank 4. The oil filter device further includes a second sealing ring 12, which is clamped between the screw plug 5 and the end cover 3. The screw plug 5 is in the shape of a stepped shaft as a whole.

Claims

1. An oil filtering device, characterized in that: The invention comprises a filter screen (1), a magnetic rod (2) and an end cover (3); the filter screen (1) is in the shape of a cylinder; one end of the end cover (3) is fixedly connected to an oil tank (4); the other end of the end cover (3) is sleeved on one end of the filter screen (1); the other end of the filter screen (1) extends into the oil tank (4); the end cover (3) is also screwed to a screw plug (5); one end of the magnetic rod (2) is screwed to the screw plug (5); the other end of the magnetic rod (2) extends into the filter screen (1).

2. The oil filter device according to claim 1, characterized in that: The surface of the screw plug (5) is also provided with a boss (6), and the surface of the end cover (3) is provided with a recessed groove (7), and the boss (6) is accommodated in the recessed groove (7).

3. The oil filter device according to claim 2, characterized in that: The boss (6) is in the shape of a regular hexagonal prism.

4. The oil filter device according to claim 1, characterized in that: The oil filter device also includes a shield (8) and a spring (9), one end of the spring (9) abuts against the surface of the end cover (3), and the other end of the spring (9) abuts against the surface of the shield (8), and the shield (8) is fitted on the port of the filter (1).

5. The oil filtering device according to claim 4, characterized in that: The oil filtering device also includes a suction pipe (10), which is sleeved on the port of the filter screen (1), and the protective cover (8) is clamped between the outer surface of the suction pipe (10) and the inner surface of the filter screen (1).

6. The oil filter device according to claim 1, characterized in that: The oil filtering device also includes a first sealing ring (11), which is clamped between the end cover (3) and the oil tank (4).

7. The oil filter device according to claim 1, characterized in that: The oil filtering device also includes a second sealing ring (12), which is clamped between the screw plug (5) and the end cover (3).

8. The oil filter device according to claim 1, 2 or 7, characterized in that: The screw plug (5) is in the shape of a stepped shaft as a whole.

Images