Backwash duplex oil filter

Abstract

The utility model discloses a backwashing duplex oil filter which comprises a tank body, a filter component is arranged in the tank body, an end cover is fixed at the top end of the tank body through a bolt, two shunting oil inlet pipes are symmetrically welded at the upper end of the end cover, a three-way valve is welded at one end of each shunting oil inlet pipe, and a three-way valve is welded at the other end of each shunting oil inlet pipe. And the two three-way valves are rotationally connected with valve handles. According to the oil filter, clean oil can enter the filter assembly from the main oil inlet pipe through the three-way valve, and residues blocked on the filter screen assembly are washed away from inside to outside, so that the oil filter is easier to clean, the problems caused by blocking a filter cartridge by a large number of impurities are reduced, the filtering efficiency of the oil filter is improved, and the service life of the oil filter is prolonged. And the content of residues in the conical sewage discharging hopper can be checked through the visual observation window so that the conical sewage discharging hopper can be cleaned, the threaded block can be in threaded connection with the threaded sleeve, the filtering assembly can be conveniently disassembled, and the convenience of the oil filter is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil filter equipment technical field especially relates to a backwash duplex oil filter. BACKGROUND

[0002] Duplex oil filter, generally refers to the filter hydraulic oil filter equipment, generally is by the shell and filter core is composed of, according to the material of filter core, can be divided into paper filter core oil filter, stainless steel filter core oil filter etc., according to structural form, can be divided into barrel type oil filter, magnetic oil filter etc., considering the self-priming performance of pump, oil filter is generally all coarse filter.

[0003] Traditional duplex oil filter is mostly barrel type oil filter, by the filtration of hydraulic oil from filter cartridge, the shell is detachably installed with filter core, hydraulic oil or lubricating oil enters from the oil inlet, after the filtration of filter core in the shell, then is exported from the oil outlet, in the working equipment, provide clean filtered oil, barrel duplex filter can better provide filtration for oil when working, however, the filter core needs regular replacement when using the above device, and needs to be disassembled and cleaned when replacing the filter core, the process is time-consuming and laborious, reduces the filtration efficiency, therefore, in order to make the oil filter more easy to clean, reduce the problem caused by a large amount of impurities blocking the filter cartridge, it is necessary to improve the prior art. SUMMARY

[0004] The utility model aims at solving the shortcomings in the prior art and provides a backwash duplex oil filter.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme:

[0006] A backwash duplex oil filter, including the jar body, be equipped with the filter assembly in the jar body, the top of the jar body is fixed with the end cover through bolt, the upper end of end cover is symmetrically welded with two shunt oil inlet pipes, one end of two shunt oil inlet pipes is welded with three-way valve, two three-way valves are rotatably connected with valve handle, the upper end and the other end of two three-way valves are respectively welded with main oil inlet pipe and shunt oil outlet pipe, one side of two shunt oil outlet pipes is welded with main oil outlet pipe, the lower end of end cover is symmetrically welded with two support frames, two support frames are welded with cylinder in, two cylinders are rotatably connected with piston in, one side of two pistons is welded with L type rod, one end of two L type rods is rotatably connected with connecting rod, and the one end valve handle of connecting rod is connected.

[0007] As a further scheme of the utility model, the bottom of the jar body is provided with a through slot, the bottom of the jar body is welded with two conical blowdown hoppers, and the circumferential outer wall of two conical blowdown hoppers is provided with a visual observation window.

[0008] As a further scheme of the utility model, the lower end of the two conical sewage hoppers is welded with a sewage pipe, and a switch valve is welded on the sewage pipe.

[0009] As a further scheme of the utility model, the filter assembly comprises a coarse filter cylinder, a fine filter cylinder is arranged in the coarse filter cylinder, and a supporting cylinder is arranged in the fine filter cylinder.

[0010] As a further scheme of the utility model, two threaded sleeves are symmetrically welded on the inner wall of the bottom of the tank body.

[0011] As a further scheme of the utility model, a threaded block is welded at the bottom end of the filter assembly, and the threaded block is threadedly connected with the threaded sleeve.

[0012] As a further scheme of the utility model, a sealing rubber ring is symmetrically bonded on the upper end of the end cover, and one end of the L-shaped rod penetrates through the sealing rubber ring.

[0013] The utility model has the advantages of:

[0014] 1. The utility model is provided with a three-way valve, clean oil is made to enter the inside of the filter assembly from the main oil inlet pipe through the three-way valve, and the residual substances blocked on the filter screen assembly are flushed out from inside to outside, so that the oil filter is more easy to clean, problems caused by the blockage of a large amount of impurities in the filter cylinder are reduced, and the filtering efficiency of the oil filter is increased.

[0015] 2. The utility model is provided with a visual observation window, the residual substance content in the conical sewage hopper can be observed through the visual observation window, so that the conical sewage hopper can be cleaned.

[0016] 3. The utility model is provided with a threaded block, the threaded block is threadedly connected with the threaded sleeve, the filter assembly is convenient to disassemble, and the convenience of the oil filter is increased. DRAWINGS

[0017] Figure 1 It is a perspective structural schematic view of the double oil filter of backwashing proposed in the utility model;

[0018] Figure 2 It is an enlarged structural schematic view of A of the double oil filter of backwashing proposed in the utility model;

[0019] Figure 3 It is a sectional view structural schematic view of the double oil filter of backwashing proposed in the utility model.

[0020] Figure 4 It is a sectional view structural schematic view of the filter assembly of the double oil filter of backwashing proposed in the utility model.

[0021] Figure 5The utility model provides a kind of cylinder section structure schematic diagram of double filter oiler of backwashing.

[0022] In the drawing: 1, tank body;2, end cover;3, shunt inlet pipe;4, three-way valve;5, main inlet pipe;6, shunt outlet pipe;7, visible observation window;8, conical blowdown hopper;9, blowdown pipe;10, main outlet pipe;11, L-shaped rod;12, connecting rod;13, valve handle;14, threaded sleeve;15, cylinder;16, support frame;17, coarse filter cylinder;18, through slot;19, fine filter cylinder;20, support cylinder;21, threaded block;22, piston;23, sealing rubber ring. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model, and the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Refer to Figures 1-5The utility model discloses a backflushing duplex oil filter, including tank body 1, be equipped with filter assembly in tank body 1, and the top of tank body 1 is fixed with end cover 2 through bolt, and the upper end of end cover 2 is symmetrically welded with two split flow inlet pipe 3, and one end of two split flow inlet pipe 3 is welded with three -way valve 4, and two three -way valves 4 are all rotatably connected with valve handle 13, and the upper end of two three -way valves 4 and the position of another end are welded with main inlet pipe 5 and split flow outlet pipe 6 respectively, and one side of two split flow outlet pipe 6 is welded with main outlet pipe 10, and the lower end of end cover 2 is symmetrically welded with two support frame 16, and two support frame 16 are all welded with cylinder 15, and two cylinder 15 are all slidably connected with piston 22, and one side of two piston 22 is welded with L type rod 11, and one end of two L type rod 11 passes through end cover 2 and is rotatably connected with connecting rod 12, and one end of connecting rod 12 is connected with valve handle 13, when filter assembly is blocked, when using, the pressure in tank body 1 is too big, and pressure will extrude piston 22 and move down in cylinder 15, and piston 22 will drive L type rod 11 and move down, because one end of L type rod 11 is rotatably connected with connecting rod 12, and one end of connecting rod 12 is rotatably connected with valve handle 13, because the distance of connecting rod 12 is fixed, so when L type rod 11 moves down, will drive valve handle 13 and rotate down through connecting rod 12, and valve handle 13 will change the state of three -way valve 4 simultaneously, make the main inlet pipe 5 and split flow inlet pipe 3 originally communicate into main outlet pipe 10 and split flow outlet pipe 6, make clean oil from main inlet pipe 5 into filter assembly inside, and flush away the residue on filter screen assembly from inside to outside, thereby make oil filter more easily wash, reduce the problem that a large number of impurities block filter cartridge, increase the filtering efficiency of oil filter.

[0025] In the utility model, the bottom of tank body 1 is provided with a through groove 18, two conical blowdown hoppers 8 are welded to the bottom end of tank body 1, visual observation windows 7 are formed in the circumferential outer walls of the two conical blowdown hoppers 8, the residue content in the conical blowdown hoppers 8 can be observed through the visual observation windows 7, so that the conical blowdown hoppers 8 can be cleaned, blowdown pipes 9 are welded to the lower ends of the two conical blowdown hoppers 8, and on-off valves are welded to the blowdown pipes 9, so that the conical blowdown hoppers 8 can be conveniently cleaned and the speeds of the blowdown pipes 9 can be conveniently controlled, the filter assembly comprises a coarse filter cartridge 17, the coarse filter cartridge 17 is provided with a fine filter cartridge 19, and the fine filter cartridge 19 is provided with a support cylinder 20, so that the oil can be filtered more finely and the applicability of the oil filter is improved, two threaded sleeves 14 are symmetrically welded to the inner walls of the bottom of tank body 1, threaded blocks 21 are welded to the bottom end of the filter assembly, and the threaded blocks 21 can be threadedly connected with the threaded sleeves 14, so that the filter assembly can be conveniently disassembled, the convenience of the oil filter is improved, the upper end of end cover 2 is symmetrically bonded with a sealing rubber ring 23, and one end of the L-shaped rod 11 penetrates through the sealing rubber ring 23, so that the oil can be prevented from leaking out and the safety of the oil filter is improved.

[0026] Working principle: when the oil body needs to be filtered, the main oil inlet pipe 5 is communicated with the branch oil inlet pipe 3 through the three-way valve 4, at this time the oil body is connected, the oil body enters the tank body 1 through the filter assembly and enters the branch oil outlet pipe 6, since the three-way valve 4 closes the branch oil outlet pipe 6 and the main oil inlet pipe 5, at this time the switch valve on the main oil outlet pipe 10 is opened, the clean oil flows out, the residues in the oil body are blocked outside by the filter assembly and finally deposited in the conical dirt discharge hopper 8, when the filter assembly is blocked, the pressure in the tank body 1 is too large, the pressure will extrude the piston 22 to move downward in the cylinder 15, the piston 22 will drive the L-shaped rod 11 to move downward, since one end of the L-shaped rod 11 is rotationally connected with the connecting rod 12 and one end of the connecting rod 12 is rotationally connected with the valve handle 13, since the distance of the connecting rod 12 is fixed, when the L-shaped rod 11 moves downward, the valve handle 13 will be driven to rotate downward through the connecting rod 12, at the same time the valve handle 13 will change the state of the three-way valve 4, so that the main oil inlet pipe 5 and the branch oil inlet pipe 3 are communicated becomes the main oil outlet pipe 10 and the branch oil outlet pipe 6, the switch valve of the main oil outlet pipe 10 is closed, the clean oil enters the filter assembly from the main oil inlet pipe 5, the residues blocked on the filter assembly are washed out from inside to outside, so that the oil filter is more easy to clean, the problem caused by a large amount of impurities blocking the filter cartridge is reduced, and the filtering efficiency of the oil filter is increased.

[0027] In addition, although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A backwashing dual oil filter, comprising a tank (1), characterized in that, The tank (1) is equipped with a filter assembly. An end cap (2) is fixedly connected to the top of the tank (1). Two branch oil inlet pipes (3) are symmetrically fixedly connected to the upper end of the end cap (2). A three-way valve (4) is fixedly connected to one end of each of the two branch oil inlet pipes (3). A valve handle (13) is rotatably connected to each of the two three-way valves (4). A main oil inlet pipe (5) and a branch oil outlet pipe (6) are fixedly connected to the upper and other ends of the two three-way valves (4), respectively. The main oil outlet pipe (10) is fixedly connected to the side. Two support frames (16) are symmetrically fixedly connected to the lower end of the end cover (2). A cylinder (15) is fixedly connected inside each of the two support frames (16). A piston (22) is slidably connected inside each of the two cylinders (15). An L-shaped rod (11) is fixedly connected to one side of each of the two pistons (22). One end of each of the two L-shaped rods (11) passes through the end cover (2) and is rotatably connected to a connecting rod (12). A valve handle (13) is connected to one end of the connecting rod (12).

2. The backwashing duplex oil filter according to claim 1, characterized in that, The bottom of the tank (1) is provided with a through groove (18), and two conical sewage hoppers (8) are fixedly connected to the bottom end of the tank (1). The outer circumferential walls of the two conical sewage hoppers (8) are provided with viewing windows (7).

3. A backwashing duplex oil filter according to claim 2, characterized in that, Both of the two conical sewage hoppers (8) are fixedly connected to a sewage pipe (9) at their lower ends, and a switch valve is fixedly connected to the sewage pipe (9).

4. A backwashing duplex oil filter according to claim 1, characterized in that, The filtration assembly includes a coarse filter cartridge (17), a fine filter cartridge (19) is provided inside the coarse filter cartridge (17), and a support cartridge (20) is provided inside the fine filter cartridge (19).

5. A backwashing duplex oil filter according to claim 1, characterized in that, The bottom inner wall of the tank (1) is symmetrically fixedly connected with two threaded sleeves (14).

6. A backwashing duplex oil filter according to claim 5, characterized in that, The bottom end of the filter assembly is fixedly connected to a threaded block (21), and the threaded block (21) can be threadedly connected to the threaded sleeve (14).

7. A backwashing duplex oil filter according to claim 1, characterized in that, The upper end of the end cap (2) is symmetrically fixed with a sealing rubber ring (23), and one end of the L-shaped rod (11) passes through the sealing rubber ring (23).

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