Oil return filter with double-cylinder structure

Abstract

The utility model relates to the technical field of oil return filters, in particular to an oil return filter with a double-cylinder structure, which adopts the technical scheme that the oil return filter comprises a cylinder body, a top cover and a first filter cylinder, a plurality of liquid discharge holes are formed in the side surface of the cylinder body close to the bottom, and an isolation hood is fixedly mounted at the bottom in the cylinder body; an electromagnet is fixedly mounted in the isolation cover, a mounting ring is fixedly mounted in the barrel, the top of the mounting ring and the top of the barrel are located on the same horizontal plane, and an electromagnetic valve is fixedly mounted at the top of the mounting ring. According to the oil filter, the first filter cartridge and the second filter cartridge are mounted in the cartridge body, and the first filter cartridge and the second filter cartridge are elastically connected through the spring cartridge, so that solid particles doped in oil are reduced after the oil is filtered by the first filter cartridge and the second filter cartridge; and therefore, the oil can be ensured to have relatively good cleanliness when flowing back to the hydraulic system for management.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil return filter technical field, concretely is a kind of double-barrel structure's oil return filter. BACKGROUND

[0002] In industrial hydraulic system, the cleanliness of oil is crucial to system stable operation, the traditional single-barrel oil return filter has the problems of limited filtering capacity, insufficient pollution capacity, inconvenient maintenance etc., it is difficult to meet the growing demand of high efficiency, reliable industry, therefore we propose a kind of double-barrel structure's oil return filter.

[0003] Prior art still has the following defects in the process of using:

[0004] The oil return filter in prior art adopts single-barrel filter structure, resulting in that filtering effect is not ideal, and single-barrel filter structure is fixed structure, when filtering oil, only oil itself pressure can promote oil filtering, thereby reduce the filtering effect and efficiency of oil return filter;

[0005] The oil return filter in prior art can only ensure the filtering effect of oil return filter by periodically replacing filter element during filtering process, so in daily use, the filtering effect of oil return filter for oil will decrease with the increase of use time, until filter element is completely blocked and loses filtering effect to replace new filter element, reduce the working efficiency and practicality of oil return filter.

[0006] In view of this, we propose a kind of double-barrel structure's oil return filter to solve the existing problems. INVENTION CONTENTS

[0007] The utility model aims at providing a kind of double-barrel structure's oil return filter to solve the problems proposed in the above background art.

[0008] To achieve the above object, the utility model provides the following technical scheme: a kind of double-barrel structure's oil return filter, including cylinder, top cover and first filter cylinder, the side of the cylinder is close to the bottom position and is provided with a plurality of liquid discharge holes, the bottom inside the cylinder is fixedly installed with isolating cover, the inside of the isolating cover is fixedly installed with electromagnet, the inside of the cylinder is fixedly installed with mounting ring, and the top of mounting ring and the top of cylinder are on the same horizontal plane, the top of mounting ring is fixedly installed with electromagnetic valve;

[0009] The top of the cylinder is fixedly installed with top cover, the left side of the top cover is fixedly installed with inlet pipe, and the right side of the top cover is fixedly installed with liquid discharge pipe;

[0010] The inside of the barrel body movably installs a first filter cylinder, the bottom of the first filter cylinder is provided with a limiting ring, the limiting ring is fixedly connected with the inner wall of the barrel body, and the top of the limiting ring is in abutting connection with the bottom of the first filter cylinder, the top of the first filter cylinder fixedly installs a plurality of spring cylinders, the top of the spring cylinder fixedly installs a second filter cylinder, and the bottom of the first filter cylinder and the second filter cylinder are fixedly installed with permanent magnets.

[0011] Preferably, the bottom of the first filter cylinder and the second filter cylinder is provided with a plurality of flow guide holes, and the inside of the first filter cylinder and the second filter cylinder is fixedly installed with filter cores.

[0012] Preferably, the top of the top cover is fixedly installed with a maintenance cover, and the inner wall of the top cover is fixedly installed with a pressure sensor.

[0013] Preferably, the liquid inlet pipe and the liquid outlet pipe are both provided with control valves at the positions connected with the top cover.

[0014] Preferably, the installation position of the limiting ring is higher than the liquid outlet hole.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model discloses a first filter cylinder and a second filter cylinder are installed in the inside of the barrel body, and the first filter cylinder and the second filter cylinder are elastically connected through the spring cylinder, so that after oil liquid is filtered through the first filter cylinder and the second filter cylinder, the solid particles mixed in the oil liquid are reduced, and the oil liquid can have better cleanliness when returning to the hydraulic system management.

[0017] The utility model discloses a first filter cylinder and a second filter cylinder are installed in the inside of the barrel body, and the first filter cylinder and the second filter cylinder are elastically connected through the spring cylinder, so that after oil liquid is filtered through the first filter cylinder and the second filter cylinder, the solid particles mixed in the oil liquid are reduced, and the oil liquid can have better cleanliness when returning to the hydraulic system management. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is three -dimensional structure schematic diagram of the utility model;

[0019] Figure 2 It is three -dimensional structure schematic diagram of the utility model;

[0020] Figure 3It is a front face external structure schematic view of the utility model.

[0021] Figure 4 It is a front face cross section structure schematic view of the utility model.

[0022] Figure 5 It is a local three-dimensional structure schematic view of the utility model.

[0023] In the drawing: 1, cylinder body;101, liquid discharge hole;102, electromagnetic valve;103, mounting ring;104, isolation cover;105, electromagnet;2, top cover;201, maintenance cover;202, liquid inlet pipe;203, liquid discharge pipe;204, pressure sensor;3, first filter cylinder;301, permanent magnet;302, spring cylinder;303, second filter cylinder;304, filter element;305, limiting ring. Specific implementation

[0024] The technical scheme of the utility model is further explained below in combination with the drawings and specific embodiments.

[0025] As Figure 1 - Figure 5 The utility model discloses a double cylinder structure's oil filter, including cylinder body 1, top cover 2 and first filter cylinder 3, the side of cylinder body 1 is close to the bottom position and is provided with a plurality of liquid discharge holes 101, the bottom fixed mounting of cylinder body 1's inside has isolation cover 104, the inside fixed mounting of isolation cover 104 has electromagnet 105, the inside fixed mounting of cylinder body 1 has mounting ring 103, and the top of mounting ring 103 and the top of cylinder body 1 are on the same horizontal plane, the top fixed mounting of mounting ring 103 has electromagnetic valve 102, cylinder body 1 can provide the installation position of surrounding assembly, liquid discharge hole 101 can make oil liquid after filtering, from the inside of cylinder body 1 and export, and then complete the reflux of oil liquid, isolation cover 104 can avoid oil liquid to enter the inside of electromagnet 105 and lead to electromagnet 105 damage, and isolation cover 104 can absorb the heat generated when electromagnet 105 works, utilizes the flow of oil liquid to promote the heat dissipation of electromagnet 105, makes electromagnet 105 always be in the working environment of being better, electromagnet 105 can generate magnetic force after electrification, and then through the magnetic force of permanent magnet 301, promotes the reciprocating movement of first filter cylinder 3 and second filter cylinder 303 in the inside of cylinder body 1, and then facilitates promoting oil liquid fast filtering, also can vibrate the solid particle in filter element 304 and block, makes filter element 304 restore the effect of filtering, and mounting ring 103 can provide fixed installation position for electromagnetic valve 102;

[0026] The top of the barrel body 1 is fixedly installed with a top cover 2, the left side of the top cover 2 is fixedly installed with a liquid inlet pipe 202, and the right side of the top cover 2 is fixedly installed with a liquid outlet pipe 203, the top cover 2 can seal the top of the barrel body 1, so that the oil flows in the sealed space, so as to guide the oil into the barrel body 1 for filtration, the liquid inlet pipe 202 can be externally connected with a pipeline, so that the oil enters the top cover 2 through the liquid inlet pipe 202, and the liquid outlet pipe 203 can be externally connected with a pipeline, so that when the inside of the barrel body 1 is blocked, the oil is discharged from the liquid outlet pipe 203 and flows back to the hydraulic system pipeline;

[0027] The inside of the barrel body 1 is movably installed with a first filter cylinder 3, the bottom of the first filter cylinder 3 is provided with a limiting ring 305, the limiting ring 305 is fixedly connected with the inner wall of the barrel body 1, and the top of the limiting ring 305 is in abutting connection with the bottom of the first filter cylinder 3, the top of the first filter cylinder 3 is fixedly installed with a plurality of spring cylinders 302, the top of the spring cylinder 302 is fixedly installed with a second filter cylinder 303, and the bottom of the first filter cylinder 3 and the second filter cylinder 303 is fixedly installed with a permanent magnet 301, the first filter cylinder 3 and the second filter cylinder 303 can cooperate with each other to filter the solid particles in the oil, so that the oil has good cleanliness after filtration and flows back to the hydraulic system pipeline for work, the limiting ring 305 can limit the position of the first filter cylinder 3, so as to avoid that the first filter cylinder 3 is too low to block the liquid outlet hole 101, the spring cylinder 302 can elastically connect the first filter cylinder 3 and the second filter cylinder 303, so that when the first filter cylinder 3 moves vertically, the magnetic force of the electromagnet 105 acting on the permanent magnet 301 and the elastic force of the spring cylinder 302 acting on the second filter cylinder 303 can drive the second filter cylinder 303 to move irregularly, so as to promote the oil to complete the filtration in the first filter cylinder 3 and the second filter cylinder 303, and the permanent magnet 301 can make the magnetic force of the electromagnet 105 act on the first filter cylinder 3 and the second filter cylinder 303, so as to drive the first filter cylinder 3 and the second filter cylinder 303 to move vertically.

[0028] Further, the bottom of the first filter cylinder 3 and the second filter cylinder 303 is provided with a plurality of flow guide holes, and the inside of the first filter cylinder 3 and the second filter cylinder 303 is fixedly installed with a filter core 304, the flow guide holes can make the filtered oil flow out of the first filter cylinder 3 and the second filter cylinder 303, so as to make the oil flow out of the barrel body 1 through the liquid outlet hole 101, the filter core 304 is a dense porous material, which can filter the oil by using a plurality of small holes in the filter core 304, so as to filter the solid particles mixed in the oil during work in the first filter cylinder 3 and the second filter cylinder 303, so that the oil has good cleanliness and flows back to the hydraulic system pipeline.

[0029] Further, the top of the top cover 2 is fixedly installed with a maintenance cover 201, and the inner wall of the top cover 2 is fixedly installed with a pressure sensor 204. The maintenance cover 201 can open the top of the top cover 2, thereby facilitating the installation and maintenance of the top cover 2 and the components inside the top cover 2. The pressure sensor 204 is of MSP-3001 type. The pressure sensor 204 can monitor the hydraulic value inside the top cover 2. When blockage occurs in the first filter cartridge 3 and the second filter cartridge 303, the oil liquid in the liquid inlet pipe 202 continuously enters the top cover 2, so that the hydraulic value inside the top cover 2 increases. When the hydraulic value inside the top cover 2 increases to a preset value, the pressure sensor 204 transmits a signal to the control valve on one side of the liquid outlet pipe 203, so that the liquid outlet pipe 203 on one side is opened, and then the oil liquid inside the top cover 2 is discharged through the liquid outlet pipe 203, thereby avoiding the explosion caused by excessive pressure inside the top cover 2.

[0030] Further, the liquid inlet pipe 202 and the liquid outlet pipe 203 are installed with control valves at the connection positions with the top cover 2. The control valves can respectively control the opening and closing of the liquid inlet pipe 202 and the liquid outlet pipe 203, thereby controlling the flow direction of the oil liquid inside the device.

[0031] Further, the installation position of the limiting ring 305 is higher than the liquid discharge hole 101. The installation position of the limiting ring 305 is higher than the liquid discharge hole 101, which can avoid the blockage of the liquid discharge hole 101 when the first filter cartridge 3 vertically moves too low, so that the oil liquid can smoothly flow inside the cylinder body 1.

[0032] Working principle: after the device is assembled, the liquid inlet pipe 202 and the liquid outlet pipe 203 are respectively connected with pipelines, the control valve on one side of the liquid outlet pipe 203 is closed, and the control valve on one side of the liquid inlet pipe 202 is opened, so that the oil liquid enters the top cover 2 through the liquid inlet pipe 202. Then the electromagnetic valve 102 is opened, so that the oil liquid enters the cylinder body 1 through the mounting ring 103. The oil liquid entering the cylinder body 1 is first filtered by the filter element 304 inside the second filter cartridge 303, and then is filtered again by the filter element 304 inside the first filter cartridge 3 after being discharged from the second filter cartridge 303. The oil liquid filtered twice is discharged from the bottom of the first filter cartridge 3 and then is discharged from the cylinder body 1 through the liquid discharge hole 101, thereby completing the filtration. During the filtration, the electric current is applied to the electromagnet 105, so that the electromagnet 105 applies a magnetic force to the permanent magnet 301, thereby driving the first filter cartridge 3 and the second filter cartridge 303 to reciprocatingly and vertically move inside the cylinder body 1, promoting the rapid filtration of the oil liquid inside the first filter cartridge 3 and the second filter cartridge 303, and loosening the solid particles stuck in the holes of the filter element 304, thereby avoiding the blockage of the filter element 304 by a large amount of solid particles.

[0033] When the filter element 304 inside the first filter cartridge 3 and the second filter cartridge 303 is blocked, the oil pressure inside the top cover 2 is detected by the pressure sensor 204, and when the oil pressure is greater than a set value, the control valve on one side of the oil drain pipe 203 is opened, so that the oil inside the top cover 2 is discharged through the oil drain pipe 203, and the explosion caused by the excessive pressure inside the top cover 2 is avoided.

[0034] The above specific embodiments are only several preferred embodiments of the utility model, and based on the technical scheme of the utility model and the related inspiration of the above embodiments, the person skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A dual-cylinder structure oil return filter comprising a cylinder body (1), a top cover (2) and a first filter cylinder (3), characterized in that: The side of the barrel (1) is provided with a plurality of liquid discharge holes (101) near the bottom position, the bottom of the barrel (1) is fixedly installed with a isolation cover (104), the inside of the isolation cover (104) is fixedly installed with an electromagnet (105), the inside of the barrel (1) is fixedly installed with a mounting ring (103), and the top of the mounting ring (103) is on the same horizontal plane with the top of the barrel (1), the top of the mounting ring (103) is fixedly installed with a solenoid valve (102); The top of the barrel (1) is fixedly installed with a top cover (2), the left side of the top cover (2) is fixedly installed with a liquid inlet pipe (202), and the right side of the top cover (2) is fixedly installed with a liquid outlet pipe (203); The inside of the barrel (1) is movably installed with a first filter cylinder (3), the bottom of the first filter cylinder (3) is provided with a limiting ring (305), the limiting ring (305) is fixedly connected with the inner wall of the barrel (1), and the top of the limiting ring (305) is in abutting connection with the bottom of the first filter cylinder (3), the top of the first filter cylinder (3) is fixedly installed with a plurality of spring cylinders (302), the top of the spring cylinder (302) is fixedly installed with a second filter cylinder (303), and the bottom of the first filter cylinder (3) and the second filter cylinder (303) is fixedly installed with a permanent magnet (301).

2. The oil return filter of claim 1, wherein: The bottom of the first filter cylinder (3) and the second filter cylinder (303) is provided with a plurality of flow guide holes, and the inside of the first filter cylinder (3) and the second filter cylinder (303) is fixedly installed with a filter core (304).

3. The dual-cylinder oil return filter of claim 1, wherein: The top of the top cover (2) is fixedly installed with a maintenance cover (201), and the inner wall of the top cover (2) is fixedly installed with a pressure sensor (204).

4. The dual-cylinder oil return filter of claim 1, wherein: The liquid inlet pipe (202) and the liquid outlet pipe (203) are provided with control valves at the connection positions with the top cover (2).

5. The dual barrel return oil filter of claim 1, wherein: The installation position of the limiting ring (305) is higher than the liquid discharge hole (101).

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