A mobile hydraulic oil filter

Abstract

The present invention discloses a mobile hydraulic oil filter, comprising a hand-propelled walking frame, a casing and a cleaning system arranged in the casing, the cleaning system comprising an oil tank and an oil return cleaning component and an oil replenishing component connected to the oil tank; the oil return cleaning component comprises an oil return pipe connected to an external device and a first coarse filter, an oil return hydraulic pump component, a first fine filter and a second fine filter connected in sequence to the rear end of the oil return pipe, the oil outlet of the second fine filter is connected to the oil return port of the oil tank; the oil replenishing component comprises an oil replenishing pipe connected to an external device and a fourth fine filter, a third fine filter, an oil replenishing hydraulic pump component and a second coarse filter connected in sequence to the rear end of the oil replenishing pipe, the oil inlet of the second coarse filter is connected to the oil replenishing port of the oil tank; the mobile hydraulic oil filter of the present invention can replenish oil to the hydraulic system, can filter the hydraulic oil and lubricating oil of the hydraulic system, etc., and has good flexibility and is easy to use.

Description

Technical Field

[0001] The invention belongs to the field of hydraulic oil cleaning equipment, and more particularly relates to a mobile hydraulic oil filter. Background Art

[0002] Modern hydraulic technology has led to hydraulic system performance parameters trending towards ultra-high pressure, high flow, and high precision. To ensure the performance and reliability of hydraulic systems, the requirements for oil cleanliness are becoming increasingly stringent. Mobile oil filters are primarily used to filter impurities from engine lubricating oil and hydraulic system oil after repair. They can also be used to replenish hydraulic system oil, offering simple operation and excellent flexibility. Summary of the Invention

[0003] The purpose of the present invention is to provide a mobile hydraulic oil filter, which can replenish oil in the hydraulic system, filter the hydraulic oil and lubricating oil in the hydraulic system, etc., and has good flexibility and is easy to use.

[0004] The technical solution of the present invention is a mobile hydraulic oil filter, comprising a hand-propelled walking frame, a casing and a cleaning system placed in the casing, the cleaning system comprising an oil tank and an oil return cleaning assembly and an oil replenishing assembly connected to the oil tank; the oil return cleaning assembly comprises an oil return pipe connected to an external device and a first coarse filter, an oil return hydraulic pump assembly, a first fine filter and a second fine filter connected in sequence to the rear end of the oil return pipe, the oil outlet of the second fine filter is connected to the oil return port of the oil tank; the oil replenishing assembly comprises an oil replenishing pipe connected to an external device and a fourth fine filter, a third fine filter, an oil replenishing hydraulic pump assembly and a second coarse filter connected in sequence to the rear end of the oil replenishing pipe, the oil inlet of the second coarse filter is connected to the oil replenishing port of the oil tank.

[0005] Preferably, the oil return hydraulic pump assembly includes an oil return hydraulic pump and an oil return motor driving the oil return hydraulic pump, and the oil inlet and oil outlet of the oil return hydraulic pump are connected to the oil outlet of the first coarse filter and the oil inlet of the first fine filter respectively;

[0006] The oil replenishment hydraulic pump assembly includes an oil replenishment hydraulic pump and an oil replenishment motor driving the oil replenishment hydraulic pump. The oil inlet and oil outlet of the oil replenishment hydraulic pump are respectively connected to the oil outlet of the second coarse filter and the oil inlet of the third fine filter.

[0007] Preferably, a first oil guiding pipe is connected between the oil replenishment port of the oil tank and the oil inlet of the first coarse filter, and a first shut-off valve is provided on the first oil guiding pipe; a second oil guiding pipe is connected between the oil outlet of the second fine filter and the oil replenishment pipe, and a second shut-off valve is provided on the second oil guiding pipe; a third oil guiding pipe is connected between the oil outlet of the fourth fine filter and the oil return port of the oil tank, and a third shut-off valve is provided on the third oil guiding pipe.

[0008] Preferably, the first coarse filter, the first fine filter, the second fine filter, the second coarse filter, the third fine filter and the fourth fine filter all include a filter housing, a filter cartridge placed in the filter housing and a filter element placed in the filter cartridge; the filter housing is provided with a filter oil outlet, the side of the filter cartridge is provided with a filter oil inlet, a filter oil inlet pipe connected to the filter oil inlet, the filter oil inlet pipe extends outward and passes through the filter housing and is sealed with the filter housing; the filter element is hollow cylindrical and includes a side notch facing the filter oil inlet position, and the hydraulic oil to be filtered enters the filter element from the filter oil inlet and enters the filter element through the side notch.

[0009] Preferably, a first sealing cover for sealing the filter housing opening is provided on the outside of the filter cartridge; the filter element comprises a top surface and a bottom surface, the top surface passes through the top of the filter cartridge and is fixed with a plug-in handle.

[0010] Preferably, a limiting groove is provided above the side notch, and a limiting alignment ridge adapted to the limiting groove is provided on the inner side surface of the filter cartridge and located above the oil inlet of the filter.

[0011] Preferably, the hand-propelled walking frame includes a first fixed frame and a second fixed frame arranged in left and right positions relative to each other, the first fixed frame and the second fixed frame are connected by a plurality of connecting beams, the first fixed frame and the second fixed frame are respectively provided with universal walking wheels at the bottom, and handrails are provided at the top; the casing includes a top shell and a bottom plate fixed to the first fixed frame and the second fixed frame, a control panel is provided on the top shell, the cleaning system is provided on the bottom plate, and the oil return pipe and the oil supply pipe pass through the top of the top shell.

[0012] Preferably, a support plate is mounted on the base plate, and the oil tank, return oil hydraulic pump assembly and replenishing hydraulic pump assembly are arranged on the base plate at the bottom of the support plate. The first coarse filter, the first fine filter, the second fine filter, the second coarse filter, the third fine filter and the fourth fine filter are all arranged on the support plate, and the top shell is provided with a filter element replacement door panel that opens outward.

[0013] The beneficial effects of a mobile hydraulic oil filter according to the technical solution of the present invention are:

[0014] 1. The cleaning system includes an oil tank and an oil return cleaning component and an oil replenishing component connected to the oil tank, which can respectively clean and replenish the oil used in the equipment hydraulic system, and the operation is simple and fast.

[0015] 2. Through the setting of multiple oil guide pipes, the oil return cleaning component and the oil replenishing component can serve as backup for each other, extending the service life of the equipment and enabling the replacement of filter elements without stopping the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a mobile hydraulic oil filter according to the technical solution of the present invention.

[0017] Figure 2 for Figure 1 Axonometric drawing of .

[0018] Figure 3 This is a schematic diagram of the cleaning system of the technical solution of the present invention.

[0019] Figure 4 This is a schematic diagram of the filter structure of the technical solution of the present invention. DETAILED DESCRIPTION

[0020] To facilitate those skilled in the art to understand the technical solution of the present invention, the technical solution of the present invention is further described with reference to the accompanying drawings.

[0021] like Figure 1 and Figure 3 As shown, the technical solution of the present invention is a mobile hydraulic oil filter, including a hand-propelled walking frame, a casing and a cleaning system placed in the casing. Figure 3 As shown, the cleaning system includes an oil tank 7, and an oil return cleaning assembly 10 and an oil replenishing assembly 20 connected to the oil tank 7. The oil return cleaning assembly 10 draws hydraulic oil from the equipment to be cleaned, filters it, and stores the hydraulic oil in the oil tank 7. The oil replenishing assembly 20 draws hydraulic oil from the oil tank 7 and delivers it to the equipment to be replenished, actively replenishing the external equipment with oil, including lubricating oil and hydraulic system oil.

[0022] like Figure 3 As shown, the return oil cleaning assembly 10 includes an oil return pipe 11 connected to an external device 100, and a first coarse filter 12, a return oil hydraulic pump assembly 8, a first fine filter 15, and a second fine filter 16, connected sequentially to the rear end of the return oil pipe 11. The oil outlet of the second fine filter 16 is connected to the oil return port 71 of the fuel tank 7. When the return oil hydraulic pump assembly 8 operates, it draws hydraulic oil from the external device 100. The hydraulic oil then passes through the first coarse filter 12, the first fine filter 15, and the second fine filter 16, resulting in a three-stage filtration process that effectively removes impurities from the hydraulic oil and enables reuse of the hydraulic oil. The first coarse filter 12 is positioned before the return oil hydraulic pump assembly 8 to filter out large particles of impurities in the hydraulic fluid and prevent damage to the return oil hydraulic pump assembly 8. The first and second fine filters 15, 16 are positioned at the rear of the return oil hydraulic pump assembly 8, allowing the return oil hydraulic pump assembly 8 to provide positive pressure oil to the first and second fine filters 15, 16, improving filtration efficiency.

[0023] like Figure 3As shown, the oil replenishment assembly 20 includes an oil replenishment pipe 21 connected to the external device 100, and a fourth fine filter 22, a third fine filter 23, an oil replenishment hydraulic pump assembly, and a second coarse filter 26, which are sequentially connected to the rear end of the oil replenishment pipe 21. The oil inlet of the second coarse filter 26 is connected to the oil replenishment port 72 of the fuel tank 7. The oil replenishment hydraulic pump assembly operates to replenish oil to the external device 100. The hydraulic oil is filtered by the second coarse filter 26, the third fine filter 23, and the fourth fine filter 22 to ensure the purity of the replenished hydraulic oil.

[0024] In this technical solution, the return hydraulic pump assembly 8 includes a return hydraulic pump 13 and a return motor 15 that drives the return hydraulic pump 13. The oil inlet and oil outlet of the return hydraulic pump 13 are connected to the oil outlet of the first coarse filter 12 and the oil inlet of the first fine filter 15, respectively. The charge hydraulic pump assembly includes a charge hydraulic pump 24 and a charge motor 25 that drives the charge hydraulic pump 24. The oil inlet and oil outlet of the charge hydraulic pump 24 are connected to the oil outlet of the second coarse filter 26 and the oil inlet of the third fine filter 23, respectively.

[0025] In this technical solution, a first oil guide pipe 31 is connected between the oil replenishment port 72 of the fuel tank 7 and the oil inlet of the first coarse filter 12. A first shutoff valve 32 is provided on the first oil guide pipe 31. A second oil guide pipe 33 is connected between the oil outlet of the second fine filter 16 and the oil replenishment pipe 21. A second shutoff valve 34 is provided on the second oil guide pipe 33. A third oil guide pipe 35 is connected between the oil outlet of the fourth fine filter 22 and the oil return port 71 of the fuel tank 7. A third shutoff valve 36 is provided on the third oil guide pipe 37.

[0026] Based on the above technical solution, the arrangement of the first oil guide pipe 31 , the second oil guide pipe 33 and the third oil guide pipe 37 enables the oil return cleaning assembly 10 and the oil replenishing assembly 20 to serve as backup for each other.

[0027] During oil return, the oil return path is: external device 100 → oil return pipe 11 → first oil guide pipe 31 → second coarse filter 26 → oil charge hydraulic pump 24 → third fine filter 23 → fourth fine filter 24 → third oil guide pipe 35 → oil return port 71 of fuel tank 7. In other words, in this path, oil charge assembly 20 functions as an oil return cleaning assembly. Repairs and filter element replacements can be performed on the original oil return cleaning assembly 10 without shutting down the machine.

[0028] When replenishing oil, the oil replenishment path is: oil replenishment port 71 of the oil tank 7 → first oil guide pipe 31 → first coarse filter 12 → return oil hydraulic pump 13 → first fine filter 15 → second fine filter 16 → second oil guide pipe 33 → oil replenishment pipe 21. In other words, in this path, the return oil cleaning assembly 10 serves as the oil replenishment assembly. Repairs and filter element replacements can be performed on the original oil replenishment assembly 20 without shutting down the machine.

[0029] In this technical solution, if Figure 4As shown, the first coarse filter, first fine filter, second fine filter, second coarse filter, third fine filter, and fourth fine filter each include a filter housing 91, a filter cartridge 93 disposed within the housing 91, and a filter element 96 disposed within the cartridge 93. A filter outlet 92 is provided on the filter housing 91, and a filter inlet 94 is provided on the side of the filter cartridge 93. A filter inlet pipe 95 is connected to the filter inlet 94. The filter inlet pipe 95 extends outward, passes through the filter housing 91, and is sealed therewith. The filter element 96 is hollow and cylindrical and includes a side notch 97 facing the filter inlet 94. The hydraulic oil to be filtered enters the filter inlet 94 through the side notch 97 and into the filter element 96. After entering the filter element 96, the filtered hydraulic oil seeps out from the side of the filter element 96, passes through the filter cartridge 93, and enters the filter housing 91, ultimately being discharged through the filter outlet 92.

[0030] The design of the filter housing 91, filter cartridge 93, and filter element 96 of this technical solution allows for quick replacement of the filter element without requiring any additional operations, making replacement convenient. The provision of the side notch 97 allows hydraulic oil to quickly enter the filter element, accelerating filtration speed and efficiency.

[0031] In this technical solution, a first sealing cap 98 is provided on the outside of the filter cartridge 93 to seal the filter housing opening. The filter element 96 comprises a top surface and a bottom surface. The top surface extends through the top of the filter cartridge 93 and is secured with an insertion / extraction handle 90. To replace the filter element, the filter element 96 is removed from or inserted into the filter cartridge 93 by operating the insertion / extraction handle 90, making the operation quick and easy.

[0032] In this technical solution, a limit groove 99 is provided above the side notch 97, and a limit alignment ridge is provided on the inner side of the filter cartridge 93, above the filter oil inlet 94, to adapt to the limit groove 99. The limit alignment ridge is arranged vertically and docks with the limit groove 99 to achieve positioning and alignment of the filter element when it is inserted into the filter cartridge, ensuring that the upper notch 97 of the filter element is aligned with the filter oil inlet 94.

[0033] In this technical solution, if Figure 1 and Figure 2 As shown, the hand-propelled walking frame includes a first fixed frame and a second fixed frame 1 arranged in a left-right position relative to each other, and the first fixed frame 1 and the second fixed frame 1 are connected by a number of connecting beams. Universal walking wheels 4 are respectively provided at the bottom of the first fixed frame and the second fixed frame 1, and handrails 3 are provided at the top. The casing includes a top shell 2 and a bottom plate 5 fixed to the first fixed frame and the second fixed frame 1. A control panel 201 is provided on the top shell 2. The cleaning system is arranged on the bottom plate 5, and the return oil pipe 11 and the oil supply pipe 21 pass through the top of the top shell 2. The return oil pipe 11 and the oil supply pipe 21 pass through the top of the top shell 2, which is convenient for external equipment to connect with the return oil pipe 11 or the oil supply pipe 21, and the operation is convenient and quick.

[0034] The design of the hand-propelled walking frame structure reduces the weight of the entire equipment, makes it easier to push the equipment and provides good flexibility.

[0035] In this technical solution, if Figure 1 and Figure 2 As shown, a support plate 6 is mounted on the base plate 5. The oil tank 7, return oil hydraulic pump assembly 8, and replenishment hydraulic pump assembly are mounted on the base plate 5 at the bottom of the support plate 6. The first coarse filter, first fine filter, second fine filter, second coarse filter, third fine filter, and fourth fine filter are all mounted on the support plate 6. The top shell 2 is equipped with an outward-opening filter element replacement door 202. Placing the individual filters on the support plate 6 facilitates layout and facilitates filter element replacement. To replace a filter element, simply open the filter element replacement door 202, making it quick and easy.

[0036] The technical solution of the present invention is described above in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A mobile hydraulic oil filter, characterized in that: and a tube connecting the discharging opening of the pump with the pump connected to the oil drain plug, and a tube connecting the discharging opening of the pump with the pump connected to the oil drain plug, and a tube connecting the discharging opening of the pump with the pump connected to the oil drain plug. The oil replenishment hydraulic pump assembly includes an oil replenishment hydraulic pump and an oil replenishment motor that drives the oil replenishment hydraulic pump. The oil inlet and oil outlet of the oil replenishment hydraulic pump are respectively connected to the oil outlet of the second coarse filter and the oil inlet of the third fine filter; a first oil guide pipe is connected between the oil replenishment port of the oil tank and the oil inlet of the first coarse filter, and a first shut-off valve is provided on the first oil guide pipe; a second oil guide pipe is connected between the oil outlet of the second fine filter and the oil replenishment pipe, and a second shut-off valve is provided on the second oil guide pipe; a third oil guide pipe is connected between the oil outlet of the fourth fine filter and the oil return port of the oil tank, and a third shut-off valve is provided on the third oil guide pipe ; The first coarse filter, the first fine filter, the second fine filter, the second coarse filter, the third fine filter and the fourth fine filter all include a filter housing, a filter cartridge placed in the filter housing and a filter element placed in the filter cartridge; the filter housing is provided with an oil outlet of the filter, the side of the filter cartridge is provided with an oil inlet of the filter, the oil inlet of the filter is connected to the oil inlet of the filter, the oil inlet of the filter is connected to the oil inlet of the filter, and the oil inlet of the filter is extended outwardly and passes through the filter housing and is sealed with the filter housing; the filter element is hollow cylindrical and includes a side notch facing the position of the oil inlet of the filter, and the hydraulic oil to be filtered enters from the oil inlet of the filter and enters the filter element through the side notch.

2. A mobile hydraulic oil filter according to claim 1, characterized in that: The outside of the filter cartridge is provided with a first sealing cover for sealing the filter housing opening; the filter element comprises a top surface and a bottom surface, the top surface passes through the top of the filter cartridge and is fixed with a plug-in handle.

3. The mobile hydraulic oil filter according to claim 1, characterized in that: A limiting groove is provided above the side notch, and a limiting alignment ridge adapted to the limiting groove is provided on the inner side surface of the filter cartridge and located above the oil inlet of the filter.

4. The mobile hydraulic oil filter according to claim 1, characterized in that: The hand-propelled walking frame includes a first fixed frame and a second fixed frame arranged in opposite positions on the left and right, the first fixed frame and the second fixed frame are connected by a plurality of connecting beams, the first fixed frame and the second fixed frame are respectively provided with universal walking wheels at the bottom, and handrails are provided at the top; the casing includes a top shell and a bottom plate fixed to the first fixed frame and the second fixed frame, a control panel is provided on the top shell, the cleaning system is provided on the bottom plate, and the return oil pipe and the oil supply pipe pass through the top of the top shell.

5. The mobile hydraulic oil filter according to claim 4, characterized in that: A support plate is mounted on the base plate, and the oil tank, return oil hydraulic pump assembly and replenishing hydraulic pump assembly are arranged on the base plate at the bottom of the support plate. The first coarse filter, the first fine filter, the second fine filter, the second coarse filter, the third fine filter and the fourth fine filter are all arranged on the support plate, and the top shell is provided with a filter element replacement door panel that opens outward.

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