Hydraulic oil filter element

Abstract

The invention relates to the field of filtering devices, in particular to a hydraulic oil filter element which comprises a shell, a liquid inlet is formed in one side of the shell, a liquid outlet is formed in the bottom wall of the shell, a cylindrical filter element body located above the liquid outlet is installed on the inner side of the bottom wall of the shell, and a connecting column coaxial with the filter element body is fixedly installed on the inner side of the top wall of the shell. A supporting seat for pressing the filter element body downwards is fixedly mounted at the lower end of the connecting column; the outer side of the connecting column is rotatably provided with a sleeve which is coaxially arranged, the outer side of the sleeve is slidably provided with a mounting plate in the axial direction of the sleeve, the mounting plate is fixedly provided with a brush plate, the brush plate is provided with bristles used for cleaning the outer wall of the filter element body, and the shell is provided with a driving device used for driving the sleeve to rotate; the bristles on the brush plate rotate around the filter element body in the circumferential direction and move in a reciprocating mode in the axial direction of the filter element body at the same time, and therefore impurities attached to the outer wall of the filter element body are more efficiently swept away.

Description

Technical Field

[0001] The invention relates to the field of filtering devices, and in particular to a hydraulic oil filter element. Background Art

[0002] Hydraulic oil is the hydraulic medium used in hydraulic systems that utilize liquid pressure energy. It plays the roles of energy transfer, anti-wear, system lubrication, corrosion prevention, rust prevention, and cooling in hydraulic systems. When hydraulic oil is used in hydraulic equipment, a filter is required to filter out the solid particle impurities in it.

[0003] In the prior art, an invention patent with application number CN201910399074.X discloses a hydraulic oil filter for a crane, comprising a cylindrical filter cartridge, a filter element being axially arranged on the filter cartridge, the upper and lower sides of the filter element being rotatably matched with the upper and lower sides of the filter cartridge, the inner wall of the filter cartridge being provided with a spiral blade, the outer side of the spiral blade being fixedly connected to the inner wall of the filter cartridge, and the inner side of the spiral blade being provided with bristles facing the outer wall of the filter element. The filter element can rotate along its own axial direction under the action of a rotating connector, and cooperate with the bristles of the spiral blade to remove larger particles blocking the surface of the filter element.

[0004] However, the bristles of the hydraulic oil filter can only rotate around the circumference of the filter element, and the cleaning method of the filter element by the bristles is relatively simple, which is not convenient for efficiently removing impurities adsorbed on the filter element, and needs to be improved. Summary of the invention

[0005] The object of the present invention is to provide a hydraulic oil filter element, in which the bristles can reciprocate along the axial direction of the filter element body while rotating around the circumference of the filter element body, so as to solve the defects mentioned in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A hydraulic oil filter element comprises a shell, one side of the shell is provided with a liquid inlet, the bottom wall of the shell is provided with a liquid outlet, a cylindrical filter element body located above the liquid outlet is installed on the inner side of the bottom wall of the shell, a connecting column coaxially arranged with the filter element body is fixedly installed on the inner side of the top wall of the shell, and a support seat for pressing the filter element body downward is fixedly installed on the lower end of the connecting column; a coaxially arranged sleeve is rotatably installed on the outer side of the connecting column, a mounting plate is slidably installed on the outer side of the sleeve along its axial direction, a brush plate is fixedly installed on the mounting plate, and the brush plate is provided with bristles for cleaning the outer wall of the filter element body, and a driving device for driving the sleeve to rotate is installed on the shell.

[0008] As a further improvement, a through hole matching the sleeve is provided on the mounting plate, a slide groove extending along the axial direction thereof is provided on the outer wall of the sleeve, and a slider matching the slide groove is fixedly mounted on the inner wall of the through hole.

[0009] As a further improvement, two baffles distributed along the axial direction are fixedly installed on the outer side of the sleeve, and the mounting plate is slidably installed on the sleeve located between the two baffles; a pin shaft extending radially along the connecting column is fixedly installed on the mounting plate, and a step surface supported on the bottom of the pin shaft is provided on the inner wall of the shell, and a plurality of arc-shaped protrusions evenly spaced around the circumference of the connecting column are provided on the top of the step surface, and a spring is connected between the baffle plate located above and the mounting plate to make the pin shaft fit on the top of the step surface.

[0010] As a further improvement, the brush plate is in the shape of a long strip extending along the axial direction of the filter element body, and a plurality of the brush plates are evenly spaced around the circumference of the filter element body.

[0011] As a further improvement, an annular retaining frame is fixedly mounted on the outer side of one end of the plurality of brush plates away from the mounting plate.

[0012] As a further improvement, the driving device includes a motor mounted on the housing, the rotating shaft of the motor extends into the housing and is fixedly mounted with a driving gear, and the sleeve is fixedly mounted with a driven gear matching the driving gear.

[0013] As a further improvement, the bottom of the support seat and the inner side of the bottom wall of the shell are respectively provided with positioning grooves matching the upper and lower ends of the filter element body.

[0014] As a further improvement, a magnet for absorbing metal debris is fixedly mounted on the inner side of the bottom wall of the shell.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. When the motor is working, it drives the driving gear to rotate, and the driving gear drives the driven gear and the sleeve to rotate. The sleeve drives the brush plate to rotate around the filter element through the mounting plate. The brush plate removes impurities attached to the outer wall of the filter cylinder of the filter element through the bristles, thereby improving the filtering efficiency of the filter element.

[0017] 2. The spring gives the mounting plate a downward thrust, so that the pin shaft is tightly attached to the top of the step surface or the top of the arc-shaped protrusion. Therefore, when the mounting plate drives the brush plate to rotate, the bristles on the brush plate rotate around the circumference of the filter element body and reciprocate along the axial direction of the filter element body at the same time, thereby more efficiently removing impurities attached to the outer wall of the filter element body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 A cross-sectional schematic diagram of

[0021] Figure 3 is a schematic structural diagram of a brush plate according to an embodiment of the present invention;

[0022] Figure 4 is a schematic structural diagram of a mounting plate according to an embodiment of the present invention;

[0023] Figure 5 Schematic diagram of the structure of the arc-shaped protrusion according to an embodiment of the present invention.

[0024] In the figure: 1-housing; 2-cylinder; 3-top cover; 4-bottom cover; 5-liquid inlet; 6-liquid outlet; 7-filter element body; 8-filter cartridge; 9-upper cover; 10-lower cover; 11-oil passage; 12-oil outlet; 13-connecting column; 14-support seat; 15-sleeve; 16-mounting plate; 17-brush plate; 18-bristles; 19-motor; 20-driving gear; 21-driven gear; 22-baffle; 23-convex plate; 24-pin shaft; 25-step surface; 26-arc-shaped protrusion; 27-spring; 28-retaining frame; 29-magnet; 30-through hole; 31-slide groove; 32-slider. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figures 1 to 5As shown, a hydraulic oil filter element comprises a housing 1, the housing 1 comprises a cylindrical barrel 2, the upper and lower ends of the barrel 2 are respectively fixedly mounted with a top cover 3 and a bottom cover 4, and the top cover 3 and the bottom cover 4 respectively seal the upper and lower ends of the barrel 2, the top cover 3 and the bottom cover 4 are respectively fixedly connected to the barrel 2 by bolts or the top cover 3 and the bottom cover 4 are respectively screwed on the barrel 2, so that the internal filter element body 7 can be replaced after the top cover 3 and the bottom cover 4 are removed. A liquid inlet 5 is provided on the peripheral wall of the barrel 2, a liquid outlet 6 is provided on the bottom cover 4, and a cylindrical filter element body 7 located above the liquid outlet 6 is installed on the top of the bottom cover 4.

[0027] like Figure 2 As shown, in this embodiment, the filter element body 7 includes a cylindrical filter cartridge 8, and an upper cover 9 and a lower cover 10 are fixedly installed at the upper and lower ends of the filter cartridge 8, respectively. An oil passage 11 is provided in the filter cartridge 8, and an oil outlet 12 connected to the oil passage 11 is provided on the lower cover 10, and the liquid outlet 6 is connected to the oil outlet 12. The hydraulic oil enters the housing 1 through the liquid inlet 5, and then the hydraulic oil passes through the filter cartridge 8 of the filter element body 7 from the outside to the inside, and is discharged through the oil passage 11, the oil outlet 12 and the liquid outlet 6 in sequence, thereby filtering the impurities in the hydraulic oil.

[0028] In order to improve the installation stability of the filter element body 7, a connecting column 13 coaxially arranged with the filter element body 7 is fixed on the bottom of the top cover 3 by screws, and a support seat 14 for pressing the filter element body downward is fixed on the lower end of the connecting column 13 by screws, and the bottom of the support seat 14 and the top of the bottom cover 4 are respectively provided with positioning grooves matching the upper and lower ends of the filter element body 7. The filter element body 7 is pressed downward by the support seat 14, so that the filter element body 7 is fixed between the support seat 14 and the bottom cover 4.

[0029] A coaxially arranged sleeve 15 is rotatably mounted on the outer side of the connecting column 13 through a bearing, and a mounting plate 16 is slidably mounted on the outer side of the sleeve 15 up and down along its axial direction. A brush plate 17 is fixedly mounted on the bottom of the mounting plate 16 by screws, and the brush plate 17 is located on the side of the filter element body 7. A brush 18 for cleaning the outer wall of the filter element body 7 is provided on the side of the brush plate 17 close to the filter element body 7. A driving device for driving the sleeve 15 to rotate is installed on the housing 1.

[0030] like Figure 3As shown, specifically, the driving device includes a motor 19 installed on the top of the top cover 3 by screws, the rotating shaft of the motor 19 extends downward into the housing 1 and is fixedly installed with a driving gear 20, and the upper end of the sleeve 15 is fixedly installed with a driven gear 21 matching the driving gear 20. When the motor 19 is working, it drives the driving gear 20 to rotate, and the driving gear 20 drives the driven gear 21 and the sleeve 15 to rotate. The sleeve 15 drives the brush plate 17 to rotate around the circumference of the filter element body 7 through the mounting plate 16, and the brush plate 17 sweeps away impurities attached to the outer wall of the filter cylinder 8 of the filter element body 7 through the bristles 18, thereby improving the filtering efficiency of the filter element body 7.

[0031] like Figure 4 As shown, the mounting plate 16 is circular, and a through hole 30 matching the sleeve 15 is provided at the center of the mounting plate 16. The sleeve 15 is inserted into the through hole 30. A slide groove 31 extending along its axial direction is provided on the outer wall of the sleeve 15, and a slider 32 matching the slide groove 31 is integrally formed on the inner wall of the through hole 30, so that the mounting plate 16 can be prevented from rotating relative to the sleeve 15 when sliding up and down along the axial direction of the sleeve 15.

[0032] Two baffles 22 distributed vertically along the axial direction are fixedly installed on the outer side of the sleeve 15 by screws. The mounting plate 16 is slidably mounted on the sleeve 15 between the two baffles 22 to prevent the mounting plate 16 from falling off the sleeve 15. Two convex plates 23 extending upward are integrally formed at the edge of the mounting plate 16, and the two convex plates 23 are symmetrically arranged relative to the axial direction of the mounting plate 16. Pins 24 extending radially along the connecting column 13 are respectively embedded on the outer sides of the two convex plates 23. An annular protrusion is arranged around the inner wall of the cylinder 2, and a step surface 25 supported on the bottom of the pin 24 is arranged at the upper end of the protrusion. Figure 5 As shown, the top of the step surface 25 is provided with a plurality of arc-shaped protrusions 26 evenly spaced around the circumference of the connecting column 13, and the sleeve 15 located between the upper baffle 22 and the mounting plate 16 is sleeved with a spring 27 that allows the pin shaft 24 to fit against the top of the step surface 25.

[0033] The spring 27 gives the mounting plate 16 a downward thrust, so that the pin 24 is tightly attached to the top of the step surface 25 or the top of the arc-shaped protrusion 26. During the rotation of the mounting plate 16, when the pin 24 rotates to the position of the arc-shaped protrusion 26, the arc-shaped protrusion 26 acts on the pin 24 and drives the mounting plate 16 to lift upward; when the pin 24 rotates to disengage from the arc-shaped protrusion 26, the pin 24 is again attached to the top of the step surface 25, and the mounting plate 16 descends and returns to its original position. Therefore, during the process of the mounting plate 16 driving the brush plate 17 to rotate, the bristles 18 on the brush plate 17 rotate circumferentially around the filter element body 7 while the bristles 18 reciprocate along the axial direction of the filter element body 7, thereby more efficiently removing impurities attached to the outer wall of the filter element body 7.

[0034] In this embodiment, the brush plate 17 is in the shape of a long strip extending along the axial direction of the filter element body 7 , and a plurality of brush plates 17 are evenly spaced around the circumference of the filter element body 7 , thereby improving the cleaning efficiency of the filter element body 7 .

[0035] An annular retaining frame 28 is fixedly mounted on the outer sides of one end of the plurality of brush plates 17 away from the mounting plate 16 , which can effectively prevent the brush plates 17 from bending.

[0036] A magnet 29 for absorbing metal debris is embedded on the top of the bottom cover 4. The magnet 29 is arranged in a ring shape. The positioning groove on the top of the bottom cover 4 is located on the inner side of the magnet 29. The magnet absorbs the metal debris entering the shell 1 to prevent the metal debris from repeatedly adhering to the outer wall of the filter element body 7.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A hydraulic oil filter element, characterized in that: It comprises a shell, one side of which is provided with a liquid inlet, and the bottom wall of the shell is provided with a liquid outlet, a cylindrical filter element body located above the liquid outlet is installed on the inner side of the bottom wall of the shell, a connecting column coaxially arranged with the filter element body is fixedly installed on the inner side of the top wall of the shell, and a supporting seat for pressing the filter element body downward is fixedly installed on the lower end of the connecting column; a coaxially arranged sleeve is rotatably installed on the outer side of the connecting column, a mounting plate is slidably installed on the outer side of the sleeve along its axial direction, a brush plate is fixedly installed on the mounting plate, and the brush plate is provided with bristles for cleaning the outer wall of the filter element body, and a driving device for driving the sleeve to rotate is installed on the shell.

2. A hydraulic oil filter element according to claim 1, characterized in that: The mounting plate is provided with a through hole matching the sleeve, the outer wall of the sleeve is provided with a slide groove extending along the axial direction thereof, and the inner wall of the through hole is fixedly mounted with a sliding block matching the slide groove.

3. A hydraulic oil filter element according to claim 1, characterized in that: Two baffles distributed along the axial direction are fixedly installed on the outer side of the sleeve, and the mounting plate is slidably installed on the sleeve located between the two baffles; a pin shaft extending along the radial direction of the connecting column is fixedly installed on the mounting plate, and a step surface supported on the bottom of the pin shaft is provided on the inner wall of the shell, and a plurality of arc-shaped protrusions evenly spaced around the circumference of the connecting column are provided on the top of the step surface, and a spring is connected between the baffle plate located above and the mounting plate to make the pin shaft fit on the top of the step surface.

4. A hydraulic oil filter element according to claim 1, characterized in that: The brush plate is in the shape of a long strip extending along the axial direction of the filter element body, and a plurality of brush plates are evenly spaced around the circumference of the filter element body.

5. A hydraulic oil filter element as claimed in claim 4, characterized in that: An annular retaining frame is commonly fixedly mounted on the outer sides of one end of the plurality of brush plates away from the mounting plate.

6. A hydraulic oil filter element according to claim 1, characterized in that: The driving device comprises a motor mounted on the housing, a rotating shaft of the motor extends into the housing and is fixedly mounted with a driving gear, and a driven gear matching the driving gear is fixedly mounted on the sleeve.

7. A hydraulic oil filter element according to claim 1, characterized in that: The bottom of the support seat and the inner side of the bottom wall of the shell are respectively provided with positioning grooves matching the upper and lower ends of the filter element body.

8. A hydraulic oil filter element according to claim 1, characterized in that: A magnet for absorbing metal scraps is fixedly mounted on the inner side of the bottom wall of the shell.

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