Defoaming oil filter of hydraulic oil tank

Abstract

The invention belongs to the technical field of defoaming oil filters, and particularly relates to a defoaming oil filter of a hydraulic oil tank, which comprises a machine body, an oil inlet is formed in the upper surface of the machine body, an external thread section is arranged on the circumferential side wall of the bottom of the machine body, the bottom of the machine body is sleeved with a first sealing cover, and an internal thread section is arranged on the inner wall of the first sealing cover. The external thread section is in threaded connection with the internal thread section, an oil outlet is formed in the bottom face of the first sealing cover, and second sealing covers are arranged outside the oil inlet and the oil outlet. By arranging the power assembly, power can be provided for the subsequent filtering and defoaming assembly, by arranging the filtering and defoaming assembly, the filtering efficiency of the upstream filter plate is improved, meanwhile, filtered hydraulic oil can be efficiently defoamed, and by arranging the mounting mechanism, a filter element can be conveniently disassembled and assembled.

Description

Technical Field

[0001] The invention belongs to the technical field of defoaming oil filters, and in particular relates to a defoaming oil filter for a hydraulic oil tank. Background Art

[0002] The hydraulic oil tank is an important component in the hydraulic system. It is mainly used to store hydraulic oil. Hydraulic oil plays multiple functions in the hydraulic system, such as transmitting power, lubrication and cooling. Its specific functions include storing hydraulic oil, dissipating heat, and separating air and impurities. The defoaming oil filter of the hydraulic oil tank is a device specially used to remove bubbles in the hydraulic oil. During the operation of the hydraulic system, due to the oil suction effect of the oil pump, the high-speed flow of the oil and the pressure changes in the pipeline, it is easy for air to mix into the hydraulic oil to form bubbles. These bubbles will have many adverse effects on the hydraulic system. The role of the defoaming oil filter is to remove these bubbles as much as possible before the hydraulic oil enters the key components of the hydraulic system to ensure the stable operation of the hydraulic system.

[0003] Existing defoaming oil filters usually have multi-level filtering measures when in use. The upstream filtering measures perform preliminary filtering on the hydraulic oil to remove impurity particles, etc., and these impurities are easily accumulated on the filter plate, causing the filter plate to be blocked, which in turn affects the filtering efficiency of the filter plate and increases the labor intensity of workers. Relevant treatment measures are required. At the same time, when defoaming, additional power is often required to achieve it, which has a large use cost. The hydraulic oil that has been defoamed in the defoaming oil filter needs to be finally filtered through the filter element before flowing into the hydraulic oil tank. In this process, the convenience of replacing the filter element needs to be considered. Summary of the invention

[0004] The purpose of the present invention is to provide a defoaming oil filter for a hydraulic oil tank that can improve the filtration efficiency of the upstream filter plate, reduce the use cost of the equipment and realize convenient replacement of the filter element in order to address the problems of low filtration efficiency of the upstream filter plate, additional power output required for defoaming and inconvenient replacement of the filter element.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a defoaming oil filter for a hydraulic oil tank, comprising a body, an oil inlet is arranged on the upper surface of the body, an external thread section is arranged on the circumferential side wall of the bottom of the body, a No. 1 sealing cover is sleeved on the bottom of the body, an internal thread section is arranged on the inner wall of the No. 1 sealing cover, the external thread section is threadedly connected with the internal thread section, an oil outlet is arranged on the bottom surface of the No. 1 sealing cover, a No. 2 sealing cover is arranged outside the oil inlet and the oil outlet, an upstream porous filter plate is fixedly connected between the inner walls of the body, a filtering and defoaming mechanism and a mounting mechanism are arranged in the body, the filtering and defoaming mechanism comprises a power component and a filtering and defoaming component, and the mounting mechanism comprises a plurality of mounting components.

[0006] Preferably, the power assembly includes a motor fixedly connected to the side wall of the body through a bracket, the output end of the motor is fixedly connected to a No. 1 rotating shaft, the No. 1 rotating shaft is rotatably connected to the inner wall of the body through a bearing, the upper surface of the upstream porous filter plate is provided with a No. 1 through groove, a sleeve is fixedly connected in the No. 1 through groove, a No. 2 rotating shaft is provided in the sleeve, the top and bottom ends of the No. 2 rotating shaft are rotatably connected to the upper surface and bottom surface of the sleeve through bearings, the No. 1 rotating shaft is rotatably connected to the inner wall of the sleeve at one end away from the motor through a bearing, the No. 1 rotating shaft is fixedly connected to a No. 1 bevel gear at one end away from the motor, the No. 2 rotating shaft is circumferentially fixedly connected to a No. 2 bevel gear, and the No. 1 bevel gear is meshed with the No. 2 bevel gear.

[0007] Preferably, the filtering and defoaming assembly includes a No. 1 annular plate fixedly connected to the bottom surface of the upstream porous filter plate, a plurality of fixed rods are fixedly connected to the top of the No. 2 rotating shaft at equal intervals in the circumferential direction, the bottom surfaces of the plurality of fixed rods are fixedly connected to connecting rods, the lower ends of the plurality of connecting rods are fixedly connected to cleaning rods, the bottom end of the No. 2 rotating shaft is fixedly connected to a stirring blade, and a filter element is disposed on the outer sleeve of the No. 1 annular plate.

[0008] Preferably, the mounting assembly includes a fixed block fixedly connected to the side wall of the No. 1 annular plate, the upper surface of the fixed block is provided with a No. 2 through groove, the inner wall of the No. 2 through groove is provided with a locking groove, the side wall of the filter element is fixedly connected with a mounting rod, the top of the mounting rod is provided with a groove near the side wall of the locking groove, an oblique clamping block is slidably connected in the groove, a spring is fixedly connected between the side wall of the oblique clamping block and the inner wall of the groove, an arc-shaped through groove is provided in the mounting rod, the arc-shaped through groove is communicated with the groove, a connecting rope is provided in the arc-shaped through groove, the side end of the connecting rope is fixedly connected to the side wall of the oblique clamping block, the other end of the connecting rope passes through the bottom end of the arc-shaped through groove, and the bottom end of the connecting rope is fixedly connected to a moving block.

[0009] Preferably, the upper surfaces and bottom surfaces of the plurality of oblique clamping blocks are respectively fitted with the inner top surfaces and inner bottom surfaces of the plurality of grooves, and a second annular plate is fixedly connected between the side walls on the side from which the plurality of movable blocks want to move away.

[0010] Preferably, the first bevel gear and the second bevel gear are both located in the sleeve, and the bottom surfaces of the plurality of cleaning rods are in contact with the upper surface of the upstream porous filter plate.

[0011] Preferably, the upstream porous filter plate is concentrically arranged with the sleeve, the sleeve is concentrically arranged with the filter element, and the stirring blade is located in the filter element.

[0012] Preferably, the first annular plate is arranged concentrically with the filter element, and the circumferential side wall of the top of the filter element is in contact with the inner wall of the first annular plate.

[0013] Compared with the existing technology, the advantages of the defoaming oil filter of the hydraulic oil tank are:

[0014] 1. The present invention can provide power for the subsequent filtering and defoaming components by setting a power component, thereby improving the filtering efficiency of the upstream filter plate while reducing the use cost of the equipment. Only one power source is used to achieve multiple functions, which is more in line with actual usage scenarios and is conducive to improving the practicality of the equipment.

[0015] 2. The present invention uses the power of the power component to clean the surface of the upstream filter plate through the filter defoaming component, thereby effectively avoiding the problem of impurities accumulating on the surface of the filter plate, thereby improving the working efficiency of the filter plate and the equipment. At the same time, the power component drives the filter defoaming component to efficiently defoam the hydraulic oil that has been filtered, which is beneficial to improving the working efficiency of the equipment.

[0016] 3. The present invention can realize convenient disassembly and assembly of the filter element by providing an installation mechanism, and improve the maintenance and repair efficiency of the equipment by improving the disassembly and assembly efficiency of the filter element, thereby reducing the labor intensity of the staff and improving the working efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure analysis of a defoaming oil filter of a hydraulic oil tank provided by the present invention;

[0018] Figure 2 It is a schematic diagram of a three-dimensional structural analysis from another perspective of a defoaming oil filter for a hydraulic oil tank provided by the present invention;

[0019] Figure 3 It is a schematic diagram of a three-dimensional structural analysis of a defoaming oil filter of a hydraulic oil tank provided by the present invention from another perspective;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of a defoaming oil filter for a hydraulic oil tank provided by the present invention;

[0021] Figure 5 for Figure 1 Enlarged view of point A in the middle.

[0022] In the figure, 1 is a machine body; 2 is an oil inlet; 3 is an external thread section; 4 is a No. 1 sealing cover; 5 is an internal thread section; 6 is an oil outlet; 7 is a No. 2 sealing cover; 8 is an upstream porous filter plate; 9 is an electric motor; 10 is a No. 1 rotating shaft; 11 is a No. 1 through groove; 12 is a sleeve; 13 is a No. 2 rotating shaft; 14 is a No. 1 bevel gear; 15 is a No. 2 bevel gear; 16 is a No. 1 annular plate; 17 is a cleaning rod; 18 is a stirring blade; 19 is a filter element; 20 is a fixing block; 21 is a No. 2 through groove; 22 is a locking groove; 23 is a mounting rod; 24 is a groove; 25 is an oblique clamping block; 26 is a spring; 27 is an arc-shaped through groove; 28 is a connecting rope; 29 is a moving block; 30 is a No. 2 annular plate. DETAILED DESCRIPTION

[0023] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0024] like Figure 1-Figure 5As shown, a defoaming oil filter for a hydraulic oil tank comprises a body 1, an oil inlet 2 is arranged on the upper surface of the body 1, an external thread section 3 is arranged on the circumferential side wall of the bottom of the body 1, a No. 1 sealing cover 4 is sleeved on the bottom of the body 1, an internal thread section 5 is arranged on the inner wall of the No. 1 sealing cover 4, the external thread section 3 is threadedly connected with the internal thread section 5, an oil outlet 6 is arranged on the bottom surface of the No. 1 sealing cover 4, a No. 2 sealing cover 7 is arranged outside the oil inlet 2 and the oil outlet 6, an upstream porous filter plate 8 is fixedly connected between the inner walls of the body 1, a filtering and defoaming mechanism and a mounting mechanism are arranged in the body 1, and the filtering and defoaming mechanism comprises a power component and And filtering and defoaming components, the mounting mechanism includes multiple mounting components, the power component includes a motor 9 fixedly connected to the side wall of the body 1 through a bracket, the output end of the motor 9 is fixedly connected to a No. 1 rotating shaft 10, the No. 1 rotating shaft 10 is rotatably connected to the inner wall of the body 1 through a bearing, the upper surface of the upstream porous filter plate 8 is provided with a No. 1 through groove 11, the No. 1 through groove 11 is fixedly connected with a sleeve 12, the sleeve 12 is provided with a No. 2 rotating shaft 13, the top and bottom ends of the No. 2 rotating shaft 13 are both rotatably connected to the upper surface and bottom surface of the sleeve 12 through bearings, and the No. 1 rotating shaft 10 is far away from the motor 9 through the end The bearing passes through and is rotatably connected to the inner wall of the sleeve 12. The end of the No. 1 rotating shaft 10 away from the motor 9 is fixedly connected to the No. 1 bevel gear 14. The circumferential direction of the No. 2 rotating shaft 13 is fixedly connected to the No. 2 bevel gear 15. The No. 1 bevel gear 14 meshes with the No. 2 bevel gear 15. The filtering and defoaming component includes a No. 1 annular plate 16 fixedly connected to the bottom surface of the upstream porous filter plate 8. The top of the No. 2 rotating shaft 13 is circumferentially equidistantly fixedly connected to multiple fixed rods. The bottom surfaces of the multiple fixed rods are fixedly connected to connecting rods. The lower ends of the multiple connecting rods are fixedly connected to cleaning rods 17. The bottom end of the No. 2 rotating shaft 13 is fixedly connected to a stirring rod. The mixing blade 18, the No. 1 annular plate 16 is provided with a filter element 19, the No. 1 bevel gear 14 and the No. 2 bevel gear 15 are both located in the sleeve 12, ensuring that the power assembly can operate stably for a long time, the bottom surfaces of the multiple cleaning rods 17 are all in contact with the upper surface of the upstream porous filter plate 8, so that the multiple cleaning rods 17 can work efficiently, the upstream porous filter plate 8 is concentrically arranged with the sleeve 12, the sleeve 12 is concentrically arranged with the filter element 19, the mixing blade 18 is located in the filter element 19, the No. 1 annular plate 16 is concentrically arranged with the filter element 19, and the circumferential side wall of the top of the filter element 19 is in contact with the inner wall of the No. 1 annular plate 16;

[0025] The mounting assembly includes a fixing block 20 fixedly connected to the side wall of the first annular plate 16, a second through groove 21 is provided on the upper surface of the fixing block 20, a clamping groove 22 is provided on the inner wall of the second through groove 21, a mounting rod 23 is fixedly connected to the side wall of the filter element 19, a groove 24 is provided on the side wall of the top of the mounting rod 23 near the clamping groove 22, an oblique clamping block 25 is slidably connected in the groove 24, a spring 26 is fixedly connected between the side wall of the oblique clamping block 25 and the inner wall of the groove 24, an arcuate through groove 27 is provided in the mounting rod 23, and the arcuate through groove 2 7 is communicated with the groove 24, a connecting rope 28 is arranged in the arc-shaped groove 27, the side end of the connecting rope 28 is fixedly connected to the side wall of the oblique clamping block 25, the other end of the connecting rope 28 passes through the bottom end of the arc-shaped groove 27, and the bottom end of the connecting rope 28 is fixedly connected to a moving block 29, the upper surfaces and bottom surfaces of the plurality of oblique clamping blocks 25 are respectively fitted with the inner top surfaces and inner bottom surfaces of the plurality of grooves 24, and a second annular plate 30 is fixedly connected between the side walls on which the plurality of moving blocks 29 want to move away, so as to facilitate the operation of the staff.

[0026] The working principle of the present invention is as follows:

[0027] When it is necessary to use a defoaming oil filter to filter and defoam the hydraulic oil in the hydraulic system, connect the oil inlet 2 of the defoaming oil filter so that the hydraulic oil to be treated can enter the machine body 1 through the oil inlet 2, and then connect to the hydraulic oil tank through the oil outlet 6, so that the treated hydraulic oil can flow back. During the treatment, the hydraulic oil enters the machine body 1 through the oil inlet 2, and then the motor 9 is started. The hydraulic oil entering will be directly filtered through the upstream porous filter plate 8, and then flow into the filter element 19 through the No. 1 annular plate 16, and then filtered. During this filtration, impurities and particulates in the hydraulic oil will be filtered out by the upstream porous filter plate 8, and impurity particles and the like will also accumulate on the surface of the upstream porous filter plate 8, thereby affecting its filtration efficiency. At this time, the start of the motor 9 will drive the No. 1 rotating shaft 10 to rotate, and the rotation of the No. 1 rotating shaft 10 will drive the No. 1 bevel gear 14 to rotate, and then the No. 2 bevel gear 15 and the No. 2 rotating shaft 13 will rotate through meshing transmission, and the rotation of the No. 2 rotating shaft 13 will drive multiple fixed rods to revolve, and the multiple fixed rods will drive multiple cleaning rods 17 to revolve through the connecting rod. The surface of the upstream porous filter plate 8 is cleaned by rotating, so as to avoid the accumulation of impurity particles and the blockage of the filter holes, thereby improving the filtering efficiency of the upstream porous filter plate 8. After the hydraulic oil is filtered, it reaches the bottom filter element. At this time, the second rotating shaft 13 rotates to drive the stirring blade 18 to rotate. Since the filter hole diameter of the upstream porous filter plate 8 is different from the filter hole diameter of the filter element 19, the hydraulic oil stays in the filter element 19 cavity for a long time. When the stirring blade 18 rotates, it will drive the hydraulic oil inside the filter element 19 to flow, and then under the action of centrifugal force, the hydraulic oil and The foam will produce different movement trajectories. Since the density of the foam is relatively low, the centrifugal force it is subjected to is small, while the density of the hydraulic oil is large and the centrifugal force it is subjected to is large, which causes the hydraulic oil to be thrown to the periphery of the filter element 19, while the foam tends to gather in the central area or near the second shaft 13, thereby achieving the initial separation of the hydraulic oil and the foam. As the hydraulic oil is continuously thrown out, the foam layer is gradually concentrated and separated, and the purpose of defoaming is finally achieved. After that, the hydraulic oil will also be filtered out through the filter element 19 and will flow back into the hydraulic oil tank through the oil outlet 6;

[0028] After the filter element 19 has worked for a period of time, it needs to be cleaned or replaced. At this time, the No. 1 sealing cover 4 is rotated to disengage the internal thread section 5 from the external thread section 3 and separate them. At this time, the filter element 19 is exposed, and by pulling the No. 2 annular plate 30 downward, the No. 2 annular plate 30 will drive the oblique clamping block 25 to move through multiple moving blocks 29 and connecting ropes 28, thereby retracting it into the groove 24 and disengaging it from the engaging groove 22. After completing the above, the filter element 19 can be directly removed to complete the replacement. When it is needed to be installed later, the multiple installation rods 23 are respectively aligned with the multiple No. 2 through grooves 21 and moved toward them. After the multiple oblique clamping blocks 25 contact the edges of the fixed block 20, they will retract into the groove 24 under pressure until they move to the engaging groove 22. At this time, the oblique clamping block 25 loses its restriction and will pop out under the action of the spring 26, and engage with the engaging groove 22, thereby completing the installation of the filter element 19, which is efficient, convenient and more practical.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A defoaming oil filter for a hydraulic oil tank, comprising a body (1), characterized in that: The upper surface of the machine body (1) is provided with an oil inlet (2), the circumferential side wall of the bottom of the machine body (1) is provided with an external thread section (3), the bottom of the machine body (1) is sleeved with a No. 1 sealing cover (4), the inner wall of the No. 1 sealing cover (4) is provided with an internal thread section (5), the external thread section (3) and the internal thread section (5) are threadedly connected, the bottom surface of the No. 1 sealing cover (4) is provided with an oil outlet (6), the oil inlet (2) and the oil outlet (6) are both provided with a No. 2 sealing cover (7), an upstream porous filter plate (8) is fixedly connected between the inner walls of the machine body (1), and a filtering and defoaming mechanism and a mounting mechanism are provided inside the machine body (1), the filtering and defoaming mechanism comprises a power component and a filtering and defoaming component, and the mounting mechanism comprises a plurality of mounting components.

2. The defoaming oil filter for a hydraulic oil tank according to claim 1, characterized in that: The power assembly comprises a motor (9) fixedly connected to the side wall of the machine body (1) via a bracket, the output end of the motor (9) is fixedly connected to a first rotating shaft (10), the first rotating shaft (10) is rotatably connected to the inner wall of the machine body (1) via a bearing, the upper surface of the upstream porous filter plate (8) is provided with a first through groove (11), a sleeve (12) is fixedly connected in the first through groove (11), a second rotating shaft (13) is provided in the sleeve (12), and the second rotating shaft (13) is connected to the inner wall of the machine body (1). The top and bottom ends of the first rotating shaft (10) are both rotatably connected to the upper surface and the bottom surface of the sleeve (12) through bearings, the end of the first rotating shaft (10) away from the motor (9) is rotatably connected to the inner wall of the sleeve (12) through bearings, the end of the first rotating shaft (10) away from the motor (9) is fixedly connected to the first bevel gear (14), the circumferential direction of the second rotating shaft (13) is fixedly connected to the second bevel gear (15), and the first bevel gear (14) is meshed with the second bevel gear (15).

3. The defoaming oil filter for a hydraulic oil tank according to claim 2, characterized in that: The filtering and defoaming component comprises a first annular plate (16) fixedly connected to the bottom surface of the upstream porous filter plate (8); a plurality of fixed rods are fixedly connected to the top of the second rotating shaft (13) at equal intervals in the circumferential direction; the bottom surfaces of the plurality of fixed rods are fixedly connected to connecting rods; the lower ends of the plurality of connecting rods are fixedly connected to cleaning rods (17); the bottom end of the second rotating shaft (13) is fixedly connected to a stirring blade (18); and a filter element (19) is provided on the outer cover of the first annular plate (16).

4. The defoaming oil filter for a hydraulic oil tank according to claim 3, characterized in that: The mounting assembly comprises a fixing block (20) fixedly connected to the side wall of the first annular plate (16), the upper surface of the fixing block (20) being provided with a second through groove (21), the inner wall of the second through groove (21) being provided with a snap-fit ​​groove (22), the side wall of the filter element (19) being fixedly connected with a mounting rod (23), the top of the mounting rod (23) being provided with a groove (24) on the side wall close to the snap-fit ​​groove (22), an oblique clamping block (25) being slidably connected in the groove (24), and the side of the oblique clamping block (25) being provided with a groove (24) on the side wall of the filter element (19 ... A spring (26) is fixedly connected between the wall and the inner wall of the groove (24); an arc-shaped through groove (27) is provided in the mounting rod (23); the arc-shaped through groove (27) is communicated with the groove (24); a connecting rope (28) is provided in the arc-shaped through groove (27); a side end of the connecting rope (28) is fixedly connected to the side wall of the oblique clamping block (25); the other end of the connecting rope (28) passes through the bottom end of the arc-shaped through groove (27); and a moving block (29) is fixedly connected to the bottom end of the connecting rope (28).

5. The defoaming oil filter for a hydraulic oil tank according to claim 4, characterized in that: The upper surfaces and bottom surfaces of the plurality of oblique clamping blocks (25) are respectively fitted with the inner top surfaces and inner bottom surfaces of the plurality of grooves (24), and a second annular plate (30) is fixedly connected between the side walls of the plurality of movable blocks (29) that want to move away.

6. The defoaming oil filter for a hydraulic oil tank according to claim 3, characterized in that: The first bevel gear (14) and the second bevel gear (15) are both located in the sleeve (12), and the bottom surfaces of the plurality of cleaning rods (17) are in contact with the upper surface of the upstream porous filter plate (8).

7. The defoaming oil filter for a hydraulic oil tank according to claim 3, characterized in that: The upstream porous filter plate (8) is arranged concentrically with the sleeve (12), the sleeve (12) is arranged concentrically with the filter core (19), and the stirring blade (18) is located inside the filter core (19).

8. The defoaming oil filter for a hydraulic oil tank according to claim 3, characterized in that: The first annular plate (16) is arranged concentrically with the filter element (19), and the circumferential side wall of the top of the filter element (19) is in contact with the inner wall of the first annular plate (16).

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