Hydraulic oil filtering device

Abstract

The utility model relates to a hydraulic oil filtering device, which belongs to the technical field of filters and comprises a case, a filter screen cylinder and a driving mechanism, and a limit ring is fixed on the inner bottom surface of the case; the filter screen cylinder is arranged in the case in the height direction of the case, the bottom end of the filter screen cylinder is rotationally connected into the limiting ring through a bearing, and a plurality of connecting frames are fixed in the filter screen cylinder at intervals; the driving mechanism comprises a motor and a driving rod; the motor is fixed on the top surface of the case; the driving rod is arranged in the machine box and fixed to the multiple connecting frames, and the top end of the driving rod is in transmission connection with an output shaft of the motor through a coupler. The motor is used for driving the filter screen cylinder to rotate through the driving rod and the connecting frames, and as the top opening end of the filter screen cylinder is positioned below the dirty oil inlet hole, centrifugal force can be generated in the filter screen cylinder when the filter screen cylinder rotates, so that the speed of hydraulic oil passing through meshes of the filter screen cylinder is increased, and the filtering time of the hydraulic oil is shortened; the filtering efficiency of hydraulic oil is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, and particularly relates to a hydraulic oil filtering device. Background Art

[0002] During the use of large equipment, there are very strict requirements for the cleanliness of hydraulic oil. A large part of the shutdown of many equipment is caused by unclean hydraulic oil. Hydraulic oil often contains impurities such as grit. After the equipment is filled with oil, the impurities enter the hydraulic cavity along with the hydraulic oil, which often causes friction between the sealing ring in the cavity and the impurities. After repeated friction between the hard impurities and the sealing ring, it is easy to cause irreversible damage to the lip of the seal, and it will also accelerate the wear of the precise fit, resulting in the shutdown and maintenance of the equipment.

[0003] At present, a hydraulic oil filtering device is mainly used to remove impurities from the used hydraulic oil. For example, in the invention patent with the patent number 201711348919.X and the name of a hydraulic oil filtering device, a connected coarse filtering system and fine filtering system are used to filter the hydraulic oil in multiple stages to improve the filtering effect of the hydraulic oil. However, the flow rate of the hydraulic oil inside the above filtering device is relatively low, especially in the fine filtering system, and efficient filtering cannot be achieved. At the same time, the coarse filtering system and the fine filtering system need to replace the coarse filter screen and the fine filter screen regularly, resulting in a substantial increase in the maintenance cost of the above hydraulic oil filtering device.

[0004] Therefore, how to design a hydraulic oil filtering device with simple structure, convenient operation, high filtering efficiency and low maintenance cost is an urgent problem to be solved by those skilled in the art. Summary of the Utility Model

[0005] The utility model provides a hydraulic oil filtering device to solve the technical problems of slow filtering speed and high maintenance cost of the existing hydraulic oil filtering device.

[0006] The technical solution of the utility model to solve the above technical problems is as follows: a hydraulic oil filtering device includes: a chassis, a filter mesh cylinder and a driving mechanism.

[0007] The top surface of the chassis is provided with a dirty oil inlet hole and a shaft through hole, and the bottom surface is provided with a clean oil outlet hole, the inner bottom surface of the chassis is fixed with a limit ring, and the clean oil outlet hole is located at the outer peripheral side of the limit ring; the filter screen cylinder is placed in the chassis along the height direction of the chassis and its top open end is located below the dirty oil inlet hole and the shaft through hole, the bottom end of the filter screen cylinder is rotatably connected to the limit ring through a bearing and a plurality of connecting frames are fixed in sequence along the height direction thereof, and the middle parts of the plurality of connecting frames are provided with fixed shaft holes; the driving mechanism comprises a motor and a driving rod, the motor is fixed on the top surface of the chassis and its output shaft rotates along the height direction of the chassis and extends into the shaft through hole; the driving rod is placed in the interior of the chassis along the height direction of the chassis and is sequentially penetrated and fixed in a plurality of the fixed shaft holes, and the top end of the driving rod is transmission-connected to the output shaft of the motor through a coupling to drive the filter screen cylinder to rotate to generate centrifugal force to filter the hydraulic oil.

[0008] The beneficial effects of the utility model are as follows: the filtering method of the traditional filtering device is improved, and the filter cylinder is driven to rotate by a motor through a driving rod and a plurality of connecting frames. Since the top opening end of the filter cylinder is located below the dirty oil inlet hole, centrifugal force can be generated inside the filter cylinder while the filter cylinder rotates, thereby increasing the speed at which the hydraulic oil passes through the mesh holes of the filter cylinder, shortening the filtering time of the hydraulic oil, and improving the filtering efficiency of the hydraulic oil.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, it also includes a flushing mechanism, the inner bottom surface of the chassis is provided with a slag discharge hole, the slag discharge hole is located inside the limit ring, and the side wall of the chassis is provided with a plurality of fixed holes spaced in sequence along its height direction; the flushing mechanism includes an electromagnetic valve and a plurality of nozzles, the plurality of nozzles are respectively inserted into the plurality of fixed holes and are all arranged toward the filter mesh cylinder; the electromagnetic valve is fixed at the slag discharge hole.

[0011] The above method has the further beneficial effect of first using a motor to drive the filter cylinder to rotate through a drive rod and a plurality of connecting frames, and then using a plurality of nozzles to spray high-pressure oil to flush the mesh of the filter cylinder, thereby avoiding regular replacement of the filter cylinder and improving the cleaning efficiency of the filter cylinder.

[0012] Furthermore, the cross section of the chassis is annular.

[0013] Furthermore, the cross section of the connecting frame is cross-shaped. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional structural schematic diagram of a hydraulic oil filter device of the utility model;

[0015] Figure 2 Schematic diagram of the internal structure of a hydraulic oil filtering device of the present utility model;

[0016] Figure 3 Schematic perspective view of the internal structure of a hydraulic oil filtering device of the present utility model.

[0017] In the drawings, the list of components represented by each reference numeral is as follows:

[0018] 1. Chassis, 11. Dirty oil inlet hole, 12. Clean oil outlet hole, 13. Slag discharge hole, 2. Filter screen cylinder, 3. Driving mechanism, 31. Motor, 32. Driving rod, 4. Limiting ring, 5. Connecting frame, 6. Flushing mechanism, 61. Electromagnetic valve, 62. Nozzle. Specific embodiments

[0019] The principles and features of the present utility model will be described below with reference to the accompanying drawings. The examples given are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0020] As Figure 1 、 Figure 2 and Figure 3 shown, a hydraulic oil filtering device includes: a chassis 1, a filter screen cylinder 2 and a driving mechanism 3.

[0021] The top surface of the chassis 1 is provided with a dirty oil inlet hole 11 and a shaft-passing hole, and its bottom surface is provided with a clean oil outlet hole 12. The inner bottom surface of the chassis 1 is fixedly provided with a limiting ring 4, and the clean oil outlet hole 12 is located on the outer peripheral side of the limiting ring 4. The filter screen cylinder 2 is placed in the chassis 1 along the height direction of the chassis 1, and its top open end is located below the dirty oil inlet hole 11 and the shaft-passing hole. The bottom end of the filter screen cylinder 2 is rotatably connected to the inside of the limiting ring 4 through a bearing, and a plurality of connecting frames 5 are fixedly arranged at intervals along its height direction inside it. Fixed shaft holes are provided in the middle of the plurality of connecting frames 5. The driving mechanism 3 includes a motor 31 and a driving rod 32. The motor 31 is fixed on the top surface of the chassis 1, and its output shaft rotates and extends into the shaft-passing hole along the height direction of the chassis 1. The driving rod 32 is placed inside the chassis 1 along the height direction of the chassis 1 and sequentially passes through and is fixed in a plurality of fixed shaft holes. The top end of the driving rod 32 is drivingly connected to the output shaft of the motor 31 through a coupling to drive the filter screen cylinder 2 to rotate to generate centrifugal force to filter hydraulic oil.

[0022] As Figure 2 shown, in some specific embodiments, it further includes a flushing mechanism 6. The inner bottom surface of the chassis 1 is provided with a slag discharge hole 13, the slag discharge hole 13 is located inside the limiting ring 4, and a plurality of fixing holes are sequentially arranged at intervals along the height direction on the side wall of the chassis 1. The flushing mechanism 6 includes an electromagnetic valve 61 and a plurality of nozzles 62. The plurality of nozzles 62 are respectively fixedly arranged in the plurality of fixing holes and are all arranged towards the filter screen cylinder 2. The electromagnetic valve 61 is fixed at the slag discharge hole 13.

[0023] AsFigure 1 and Figure 2 As shown, in some specific embodiments, the cross-section of the chassis 1 can be annular.

[0024] As Figure 3 shown, in some specific embodiments, the cross-section of the connecting frame 5 can be cross-shaped.

[0025] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A hydraulic oil filtering device, characterized in that, Including: A chassis (1) with an oil sludge inlet hole (11) and a shaft-passing hole on its top surface, and a clean oil outlet hole (12) on its bottom surface. A limit ring (4) is fixed on the inner bottom surface of the chassis (1), and the clean oil outlet hole (12) is located on the outer peripheral side of the limit ring (4). A filter screen cylinder (2) is placed in the chassis (1) along the height direction of the chassis (1), and the top open end thereof is located below the oil sludge inlet hole (11) and the shaft-passing hole. The bottom end of the filter screen cylinder (2) is rotatably connected to the inside of the limit ring (4) through a bearing, and a plurality of connecting frames (5) are fixedly arranged at intervals along its height direction inside the filter screen cylinder (2). Fixed shaft holes are provided in the middle of the plurality of connecting frames (5). A driving mechanism (3) includes a motor (31) and a driving rod (32). The motor (31) is fixed on the top surface of the chassis (1), and its output shaft rotates into the shaft-passing hole along the height direction of the chassis (1). The driving rod (32) is placed inside the chassis (1) along the height direction of the chassis (1) and sequentially passes through and is fixed in the plurality of fixed shaft holes. The top end of the driving rod (32) is in transmission connection with the output shaft of the motor (31) through a coupling to drive the filter screen cylinder (2) to rotate to generate centrifugal force for filtering hydraulic oil.

2. The hydraulic oil filtering device according to claim 1, wherein It further includes a flushing mechanism (6). A slag discharge hole (13) is provided on the inner bottom surface of the chassis (1), and the slag discharge hole (13) is located inside the limit ring (4). A plurality of fixing holes are provided at intervals along the height direction on the side wall of the chassis (1). The flushing mechanism (6) includes an electromagnetic valve (61) and a plurality of nozzles (62). The plurality of nozzles (62) are respectively passed through and fixed in the plurality of fixing holes and are all arranged towards the filter screen cylinder (2). The electromagnetic valve (61) is fixed at the slag discharge hole (13).

3. A hydraulic oil filtering device according to claim 1, characterized in that The cross-section of the chassis (1) is annular.

4. A hydraulic oil filtering device according to claim 1, characterized in that, The cross-section of the connecting frame (5) is cross-shaped.

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