Hydraulic oil filter device for hydraulic equipment and method of use thereof

Abstract

The application discloses a hydraulic oil filtering device for hydraulic equipment and a use method thereof, relates to the technical field of hydraulic oil filtering devices, and comprises a filtering device body, the two ends of the filtering device body are connected with ejection ends and return stroke ends through internal and external thread cooperation, the inner walls of the ejection ends and the return stroke ends are provided with through holes for the passage of hydraulic oil, the inner wall of the filtering device body is slidably connected with a fixing ring, the fixing ring is hollow, and the inner wall of the fixing ring is fixedly connected with a filter screen for filtering impurities. The magnetic disk and the filter screen are arranged to filter the iron filings and impurity particles in the hydraulic oil, the filtered hydraulic oil can effectively reduce the damage of the hydraulic device, and effectively prolong the service life of the hydraulic device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydraulic oil filtering device, in particular to a hydraulic oil filtering device for hydraulic equipment and a using method thereof. BACKGROUND

[0002] The hydraulic machine is a kind of machine for transmitting energy to realize various processes by using liquid as working medium according to Pascal principle, and the hydraulic machine is generally composed of a machine, a power system and a hydraulic control system, and the hydraulic machine is classified into valve hydraulic machine, liquid hydraulic machine and engineering hydraulic machine.

[0003] According to statistics, more than 75% of the failures of the hydraulic system are caused by impurities in the hydraulic oil, and some small particles of impurities can pass through the filter and be sucked into the hydraulic system by the pump, which can cause wear of the relative motion surface of the hydraulic element, sticking of the slide valve, blockage of the throttle orifice, and even affect the normal work of the hydraulic system, thereby further accelerating the wear of the hydraulic element. SUMMARY

[0004] The present application provides a hydraulic oil filtering device for hydraulic equipment and a using method thereof to solve the problems in the background.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a hydraulic oil filtering device for hydraulic equipment, comprising a filtering device body, a top end and a return end connected to both ends of the filtering device body through internal and external thread cooperation, a through hole for hydraulic oil passing through is arranged on the inner wall of the top end and the return end, the hydraulic device flows the hydraulic oil into the inner cavity of the filtering device body through the top end for filtering, and the filtered hydraulic oil is flowed into the inner cavity of the hydraulic device through the return end, a fixing ring is slidably connected to the inner wall of the filtering device body, the fixing ring is hollow, a filter screen for filtering impurities is fixedly connected to the inner wall of the fixing ring, and the filter screen arranged on the inner wall of the fixing ring can filter the impurities in the hydraulic oil.

[0006] In a further embodiment, one end of the fixing ring close to the top end is fixedly connected with a magnetic disc, the magnetic disc is arranged in a spiral structure, and the magnetic disc can adsorb the iron filings in the inner cavity of the hydraulic oil.

[0007] In a further embodiment, one end of the fixing ring away from the top end is fixedly connected with a connecting column, the other end of the connecting column is fixedly connected with one end of the return end, the connecting column can limit the fixing ring to avoid turning over, and the impurities on the inner wall of the filtering device body can be scraped off by pulling out the fixing ring through the return end.

[0008] In a further embodiment, a condenser tube is fixedly connected to the inner wall of the filter device body. The condenser tube is arranged in a spiral shape on the inner wall of the filter device body. The spiral arrangement of the condenser tube can improve the cooling effect. The two ends of the condenser tube extend out of the outer wall of the filter device body and are connected to a condenser. The coolant is circulated in the inner cavity of the condenser tube through the condenser, which can improve the cooling efficiency.

[0009] In a further embodiment, a sealing ring is provided at the connection between the top end and the return end and the inner wall of the filter device body. The through hole opened in the inner wall of the top end and the through hole opened in the inner wall of the return end are interconnected. The sealing ring can improve the sealing performance between the top end and the return end and the filter device body. The sealing ring can also effectively reduce the loosening of the top end and the return end caused by the shaking of the filter device body.

[0010] In a further embodiment, a control switch is fixedly installed on the inner wall of the filter device body, and a pressure column for pressing the control switch is slidably connected to the inner wall of the filter device body. The control switch can be started and stopped by moving the sliding pressure column, and the control switch can drive the condenser to start.

[0011] In a further embodiment, a limiting block is fixedly connected to the outer wall of the top pressure column, and a limiting groove for sliding of the limiting block is opened on the inner wall of the filter device body. The outer wall of the limiting block slides and fits against the inner wall of the limiting groove. The top pressure column drives the limiting block to slide along the inner wall of the limiting groove, which can limit the sliding distance of the top pressure column.

[0012] In a further embodiment, a reset spring is fixedly connected to the end of the limit block away from the control switch, and the other end of the reset spring is fixedly connected to the inner wall of the limit groove. The reset spring can keep the top pressure column in a position to press the control switch in real time.

[0013] In a further embodiment, a magnetic block is provided at the end of the pressure column away from the control switch, and a magnet is fixedly connected to the inner wall of the filter device body for attracting the magnetic block. The pressure column is attracted by the magnet and can be moved away from the control switch. At this time, the reset spring deforms and stores elastic potential energy. When the pressure column is no longer attracted, the reset spring can pull it back to press against the control switch.

[0014] Preferably, the hydraulic oil filtering device for hydraulic equipment and its method of use, as described above, includes the following steps:

[0015] A1. The hydraulic oil flows into the inner cavity of the filter body through the top end of the hydraulic device. The magnetic disk set on the inner wall of the fixed ring can adsorb the iron filings inside the hydraulic oil. The filter screen fixedly connected to the inner wall of the fixed ring can filter the impurities inside the hydraulic oil. Finally, the hydraulic oil is output to the hydraulic device through the return end.

[0016] A2. By removing the return end from the bottom of the filter device body, the connecting rod fixedly connected to the top of the return end can drive the fixing ring to slide out. At this time, the disk and filter screen can be cleaned, and the sliding fixing ring can scrape off the impurities remaining on the inner wall of the filter device body.

[0017] A3. When the hydraulic oil temperature inside the filter device body exceeds the limit, the magnet's magnetism will gradually decrease, and the top pressure spring will release its elastic potential energy to pull the top pressure column back, causing the top pressure column to press against the control switch, thereby starting the condenser to inject coolant into the inner cavity of the condenser tube, which facilitates the cooling of the hydraulic oil.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] This invention relates to a hydraulic oil filtration device for hydraulic equipment and its usage method. The device filters iron filings and impurities in the hydraulic oil through a set disk and filter screen, effectively reducing the damage to the hydraulic equipment caused by impurities in the hydraulic oil. The device can also cool the hydraulic oil through a set condenser pipe, which effectively improves the viscosity of the hydraulic oil and enhances the lubrication effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0021] Figure 2 This is a cross-sectional view of the ejector end in this invention;

[0022] Figure 3 This is a schematic diagram of the condenser tube in this invention;

[0023] Figure 4 This is a cross-sectional view of the filter device body in this invention;

[0024] Figure 5 This is a schematic diagram of the structure of the fixing ring in this invention;

[0025] Figure 6 In this invention Figure 3 Enlarged view of point A in the image.

[0026] In the diagram: 1. Filter device body; 2. Top outlet; 3. Return end; 4. Condenser; 5. Fixing ring; 6. Magnet; 7. Connecting column; 8. Disk; 9. Filter screen; 10. Top pressure column; 11. Control switch; 12. Limit block; 13. Return spring. Detailed Implementation

[0027] This application provides a hydraulic oil filtering device for hydraulic equipment and its usage method, solving the problems raised in the prior art. The technical solutions in the embodiments of this invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0028] Example 1

[0029] Please see Figures 1-6 This embodiment provides a hydraulic oil filtering device for hydraulic equipment and its usage method, including a filter device body 1. The hydraulic equipment delivers hydraulic oil to the inner cavity of the filter device body 1 for filtering. Both ends of the filter device body 1 are connected to a top end 2 and a return end 3 by internal and external thread engagement. The top end 2 is located at the top of the filter device body 1, and the return end 3 is located at the bottom of the filter device body 1.

[0030] Both the top end 2 and the return end 3 have through holes on their inner walls for hydraulic oil to pass through. One end of the through hole on the inner wall of the top end 2 and the return end 3 extends into the inner cavity of the filter body 1, and the other end extends out of the outer wall of the top end 2 and the return end 3. The hydraulic device uses a pipe to allow hydraulic oil to flow into the inner cavity of the filter body 1 through the through hole on the inner wall of the top end 2. The hydraulic oil is filtered by the components set in the inner cavity of the filter body 1 and finally flows back into the hydraulic equipment through the return end 3. The filtered hydraulic oil can effectively reduce the wear of the relatively moving surfaces of hydraulic components, the sticking of slide valves, and the blockage of throttling orifices.

[0031] A fixing ring 5 is slidably connected to the inner wall of the filter device body 1. The fixing ring 5 can slide on the inner wall of the filter device body 1 under force. The fixing ring 5 is hollow. A filter screen 9 for filtering impurities is fixedly connected to the inner wall of the fixing ring 5. A filter screen 9 is fixedly connected to the inner wall of the bottom end of the fixing ring 5. The filter screen 9 is used to filter some fine impurities and particles in the hydraulic oil.

[0032] When the hydraulic device delivers hydraulic oil to the filter body 1, the hydraulic oil can be filtered through the filter screen 9 installed on the inner wall. When the filtered hydraulic oil returns to the hydraulic device through the return end 3, the wear of the relatively moving surfaces of the hydraulic components can be effectively reduced.

[0033] A disk 8 is fixedly connected to one end of the fixed ring 5 near the top outlet 2. The disk 8 is designed with a spiral structure. The disk 8 is fixedly connected to the inner wall of the top of the fixed ring 5. It can attract small iron filings in the hydraulic oil through its own magnetism. The spiral structure of the disk 8 can isolate the hydraulic oil when it passes through, which is convenient for attracting iron filings inside the hydraulic oil and effectively improving the filtration efficiency. The disk 8 needs to be made of magnetic material with a Curie point greater than 100°, which can effectively reduce the possibility of the magnetism decreasing due to the high temperature of the hydraulic oil, thereby reducing the effect of attracting iron filings.

[0034] A connecting post 7 is fixedly connected to the end of the fixed ring 5 away from the ejector end 2. The connecting post 7 is connected to the bottom outer wall of the fixed ring 5. The diameter of the connecting post 7 is smaller than the wall thickness of the fixed ring 5. Multiple connecting posts 7 can be set. Multiple connecting posts 7 are arranged in a ring on the bottom outer wall of the fixed ring 5. The other end of the connecting post 7 is fixedly connected to one end of the return end 3. The connecting post 7 is connected to one end of the return end 3.

[0035] The setting of multiple connecting posts 7 can limit the movement of the fixing ring 5 sliding on the inner wall of the filter device body 1, effectively preventing the fixing ring 5 from being impacted by hydraulic oil and causing it to flip over on the inner wall of the filter device body 1.

[0036] The return end 3 is fixedly connected to the connecting column 7. When the return end 3 is rotated to separate it from the filter device body 1, the fixing ring 5 can be pulled out from the inner wall of the filter device body 1 through multiple connecting columns 7. Since the hydraulic oil is viscous, there may be impurities and particles attached to the inner wall of the filter device body 1. When the fixing ring 5 attached to the inner wall of the filter device body 1 is pulled out, the impurities attached to the inner wall of the filter device body 1 can also be scraped off. When the fixing ring 5 is pulled out, the impurities filtered by the filter screen 9 and the iron filings adsorbed by the disk 8 can be cleaned.

[0037] A condenser tube 4 is fixedly connected to the inner wall of the filter body 1. Coolant can cool the hydraulic oil in the inner cavity of the filter body 1 through the condenser tube 4. The condenser tube 4 is arranged in a spiral shape on the inner wall of the filter body 1. The spiral arrangement of the condenser tube 4 can improve the cooling effect. The condenser tube 4 is preferably made of copper. Both ends of the condenser tube 4 extend out of the outer wall of the filter body 1 and are connected to a condenser. The two ends of the condenser tube 4 extend out of the outer wall of the filter body 1 and are connected to the condenser. This effectively solves the problem that the viscosity of the hydraulic oil decreases due to high temperature, resulting in a decrease in lubrication effect.

[0038] A sealing ring is provided at the connection between the top end 2 and the return end 3 and the inner wall of the filter device body 1. The top end 2 and / or the return end 3 are connected to the filter device body 1 through internal and external thread engagement. The sealing ring at the connection can improve the sealing effect, and the sealing ring can effectively reduce the situation where the top end 2 and the return end 3 are separated from the filter device body 1 due to shaking.

[0039] The through hole on the inner wall of the top end 2 is connected to the through hole on the inner wall of the return end 3. By opening the interconnected through holes, the hydraulic oil inside the hydraulic device can flow into the inner cavity of the filter body 1 through the top end 2 for filtration. The filtered hydraulic oil can flow back into the hydraulic device through the return end 3.

[0040] A control switch 11 is fixedly installed on the inner wall of the filter device body 1. The control switch 11 is used to control the switch of the condenser on the side. By pressing the control switch 11, the condenser can be opened to allow the coolant to flow into the inner cavity of the condenser tube 4, which facilitates the cooling of the hydraulic oil in the inner cavity of the filter device body 1.

[0041] The inner wall of the filter device body 1 is slidably connected to a pressure column 10 for pressing the control switch 11. The inner wall of the filter device body 1 is provided with a sliding groove for the pressure column 10 to slide. The pressure column 10 can be used to press the control switch 11 by sliding along the inner wall of the sliding groove.

[0042] A limiting block 12 is fixedly connected to the outer wall of the top pressure column 10. Two limiting blocks 12 are provided and are symmetrically arranged on the outer wall of the top pressure column 10. A limiting groove for sliding of the limiting block 12 is opened on the inner wall of the filter device body 1. The outer wall of the limiting block 12 slides and fits against the inner wall of the limiting groove. When the top pressure column 10 drives the limiting block 12 to slide along the inner wall of the limiting groove, the limiting groove can limit the sliding distance of the top pressure column 10. The fit between the outer wall of the limiting block 12 and the inner wall of the limiting groove can effectively reduce the shaking of the top pressure column 10 when it slides.

[0043] A reset spring 13 is fixedly connected to one end of the limit block 12 away from the control switch 11. The other end of the reset spring 13 is fixedly connected to the inner wall of the limit groove. The reset spring 13 can press the top column 10 in real time, so that the top column 10 always maintains the tendency to press the control switch 11.

[0044] A magnetic block is provided at the end of the top pressure column 10 away from the control switch 11. The magnetic block is installed inside the top pressure column 10 at the end away from the control switch 11. A magnet 6 is fixedly connected to the inner wall of the filter device body 1 for attracting the magnetic block. The magnetic block in the inner cavity of the top pressure column 10 can be attracted by the magnet 6. At this time, the return spring 13 is deformed by the compression of the top pressure column 10 and stores elastic potential energy. When the magnet 6 no longer attracts the top pressure column 10, the return spring 13 releases the elastic potential energy and pulls the top pressure column 10 back to its original position, pressing the control switch 11 and making the condenser work to cool the hydraulic oil in the inner cavity of the filter device body 1.

[0045] Magnet 6 is set to be a magnet N35-N54 with a Curie point less than 80°. As the temperature of the hydraulic oil gradually increases, magnet 6 gradually loses its attraction to the top pressure column 10 due to the increase in temperature. When the temperature of the hydraulic oil reaches a certain value, the elastic potential energy of the return spring 13 is greater than the attraction force of magnet 6. The return spring 13 can then pull the top pressure column 10 back, thereby starting the condenser to cool the hydraulic oil.

[0046] When the hydraulic oil in the inner cavity of the hydraulic device enters the inner cavity of the filter body 1 through the top end 2, the small iron filings in the hydraulic oil are adsorbed by the disk 8 set on the inner wall of the fixing ring 5, and the impurities in the inner cavity of the hydraulic oil are filtered by the set filter screen 9. The hydraulic oil can be cooled by the set condenser pipe 4 to maintain its viscosity. This solves the problem that impurities entering the hydraulic system will cause wear on the relatively moving surfaces of hydraulic components, spool valve jamming, throttling orifice blockage, and thus affect the normal operation of the hydraulic system.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic oil filtration device for hydraulic equipment, comprising a filtration device body (1), characterized in that: Both ends of the filter device body (1) are connected to an outlet end (2) and a return end (3) by internal and external threads. The inner walls of the outlet end (2) and the return end (3) are provided with through holes for hydraulic oil to pass through. A fixing ring (5) is slidably connected to the inner wall of the filter device body (1). The fixing ring (5) is hollow. A filter screen (9) for filtering impurities is fixedly connected to the inner wall of the fixing ring (5). A disk (8) is fixedly connected to the end of the fixing ring (5) near the outlet end (2). The disk (8) is set with a spiral structure. The inner wall of the filter device body (1) is fixedly connected to the filter screen (9). A condenser tube (4) is connected to the inner wall of the filter device body (1) in a spiral arrangement. Both ends of the condenser tube (4) extend out of the outer wall of the filter device body (1) and are connected to a condenser. A control switch (11) is fixedly installed on the inner wall of the filter device body (1). A pressure column (10) for pressing the control switch (11) is slidably connected to the inner wall of the filter device body (1). A magnetic block is provided at the end of the pressure column (10) away from the control switch (11). A magnet (6) for attracting the magnetic block is fixedly connected to the inner wall of the filter device body (1).

2. The hydraulic oil filtering device for hydraulic equipment according to claim 1, characterized in that: The fixed ring (5) is fixedly connected to a connecting post (7) at one end away from the top end (2), and the other end of the connecting post (7) is fixedly connected to one end of the return end (3).

3. A hydraulic oil filtration device for hydraulic equipment according to claim 2, characterized in that: A sealing ring is provided at the connection between the top end (2) and the return end (3) and the inner wall of the filter body (1). The through hole opened in the inner wall of the top end (2) is connected to the inner cavity of the through hole opened in the inner wall of the return end (3).

4. A hydraulic oil filtration device for hydraulic equipment according to claim 3, characterized in that: The outer wall of the top pressure column (10) is fixedly connected to a limiting block (12), and the inner wall of the filter device body (1) is provided with a limiting groove for the sliding of the limiting block (12). The outer wall of the limiting block (12) slides and fits against the inner wall of the limiting groove.

5. A hydraulic oil filtering device for hydraulic equipment according to claim 4, characterized in that: The end of the limiting block (12) away from the control switch (11) is fixedly connected to a reset spring (13), and the other end of the reset spring (13) is fixedly connected to the inner wall of the limiting groove.

6. A method of using the hydraulic oil filtering device for hydraulic equipment as described in claim 5, characterized in that, Includes the following steps: A1. Hydraulic oil is fed into the inner cavity of the filter body (1) through the top end (2) via the hydraulic device. The magnetic disk (8) set on the inner wall of the fixing ring (5) can adsorb the iron filings inside the hydraulic oil. The filter screen (9) fixedly connected to the inner wall of the fixing ring (5) can filter the impurities inside the hydraulic oil. Finally, the hydraulic oil is output to the hydraulic device through the return end (3). A2. By removing the return end (3) from the bottom of the filter body (1), the connecting column (7) fixedly connected to the top of the return end (3) can drive the fixing ring (5) to slide out. At this time, the disk (8) and the filter screen (9) can be cleaned. The sliding fixing ring (5) can scrape off the impurities remaining on the inner wall of the filter body (1). A3. When the temperature of the hydraulic oil in the inner cavity of the filter body (1) is too high, the magnet (6) can be gradually reduced. The return spring (13) releases elastic potential energy to pull back the top pressure column (10), so that the top pressure column (10) presses against the control switch (11), thereby starting the condenser to inject coolant into the inner cavity of the condenser tube (4) to facilitate cooling of the hydraulic oil.

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