CN115920455B

CN115920455B - Lubricating oil separation equipment with prefilter treatment

Info

Publication number: CN115920455B
Application number: CN202310245177.7A
Authority: CN
Inventors: 赵松; 赵敏仲
Original assignee: Hebei Jingu Renewable Resources Development Co ltd
Current assignee: Hebei Jingu Renewable Resources Development Co ltd
Priority date: 2023-03-15
Filing date: 2023-03-15
Publication date: 2023-06-02
Anticipated expiration: 2043-03-15
Also published as: CN115920455A

Abstract

The invention provides lubricating oil separation equipment with pre-filtering treatment, which comprises a pre-filtering unit and a separation unit. The prefilter unit comprises a tank body, a first filter assembly and a second filter assembly. The tank body is provided with a cylinder cavity, the top end is provided with an oil inlet, and the bottom end is provided with an oil outlet. The first filtering component is located at the top of the tank body, can receive lubricating oil entering from the oil inlet, and carries out coarse filtration on the lubricating oil. The second filter component is positioned in the tank body and below the first filter component, and can carry out fine filtration on the coarsely filtered lubricating oil. The separation unit is located the below of jar body, and communicates with the oil-out, and the separation unit can carry out oil-water separation to the lubricating oil after filtering. The lubricating oil separation equipment with the pre-filtering treatment can prevent impurities in lubricating oil from entering the separation unit, further effectively protect a filtering structure in the separation unit, avoid regular disassembly and assembly, and simultaneously save cost and have strong practicability.

Description

Lubricating oil separation equipment with prefilter treatment

Technical Field

The invention belongs to the technical field of separation devices, and particularly relates to lubricating oil separation equipment with pre-filtering treatment.

Background

Lubricating oils are liquid or semisolid lubricants used in various types of automobiles and mechanical equipment to reduce friction, protect machinery and workpieces, and mainly play roles in lubrication, auxiliary cooling, rust prevention, cleaning, sealing, buffering and the like. The lubricating oil can relate to a water separation process in the production process, and the process of treating the waste lubricating oil is also included, so that the water and the like in the lubricating oil are mainly separated, and the subsequent use effect of the lubricating oil is ensured.

In the prior art, separating equipment is often adopted in the separation process of lubricating oil, mainly aimed at the separation of water, because of the inside subtle impurity of some that has of lubricating oil, consequently after long-time use, impurity will adsorb on the filter screen, and the filter screen that involves oil-water separation and adopts is comparatively special moreover, and the cost is high, and this just leads to the filter screen to need regularly to wash or change, and this process involves the dismouting, wastes time and energy, and the practicality is relatively poor.

Disclosure of Invention

The embodiment of the invention provides lubricating oil separation equipment with pre-filtering treatment, which aims to realize the purpose of removing impurities before lubricating oil is subjected to oil-water separation.

In order to achieve the above purpose, the invention adopts the following technical scheme: there is provided a lubricating oil separation apparatus having a pre-filtration process, comprising:

the prefilter unit comprises a tank body, a first filter component and a second filter component; the tank body is provided with a cylinder cavity, the top end of the tank body is provided with an oil inlet, the bottom end of the tank body is provided with an oil outlet, and the inner wall of the cylinder cavity is provided with a first fixing ring; the first filtering component is positioned at the top of the tank body and is used for receiving the lubricating oil entering from the oil inlet and carrying out coarse filtering on the lubricating oil; the first filter assembly comprises a rotary filter screen seat, a first filter screen, a second filter screen and active carbon; the rotary filter screen seat is fixedly arranged on the fixed ring and is provided with a first annular cavity and a second annular cavity positioned outside the first annular cavity, the first annular cavity is communicated with the second annular cavity, the second annular cavity is communicated with the cylinder cavity, and the first annular cavity is positioned right below the oil inlet and is used for receiving lubricating oil; the first filter screen is arranged in the first annular cavity and is annularly arranged at the communication position of the first annular cavity and the second annular cavity, and the second filter screen is arranged in the second annular cavity and is annularly arranged at the communication position of the second annular cavity and the cylinder cavity; the active carbon is filled in the second annular cavity; the second filter component is positioned in the tank body and below the first filter component and is used for carrying out fine filtration on the coarsely filtered lubricating oil and discharging filter residues; and

the separation unit is positioned below the tank body and communicated with the oil outlet, and the separation unit is used for carrying out oil-water separation on the filtered lubricating oil.

In one possible implementation, the first filter assembly further comprises a slewing bearing and a drive structure; the slewing bearing is provided with a bottom ring and a top ring, and the bottom ring of the slewing bearing is coaxially and fixedly arranged on the first fixing ring; the driving structure is arranged on the tank body and is in power connection with the top ring of the slewing bearing.

In one possible implementation, the driving structure includes a driver and a gear; the driver is fixedly arranged on the tank body; the gear is rotatably arranged on the tank body, connected with the power output end of the driver and in power connection with the top ring of the slewing bearing;

the outer edge of the top ring of the slewing bearing is provided with a tooth surface meshed with the gear.

In one possible implementation, the rotary screen seat includes a base ring, a bottom ring, a first cylinder, a second cylinder, and a third cylinder; the base ring is coaxially and fixedly arranged on the slewing bearing; the bottom ring is positioned below the slewing bearing and is horizontally arranged; the first cylinder and the base ring are coaxially arranged, the top end of the first cylinder is connected with the base ring, and the bottom end of the first cylinder is connected with the bottom ring; the second cylinder is positioned in the first cylinder and is coaxially arranged with the first cylinder, the bottom end of the second cylinder is connected with the bottom ring, and the second annular cavity is formed by enclosing the second cylinder and the first cylinder; the third cylinder is positioned in the second cylinder and is coaxially arranged with the second cylinder, the bottom end of the third cylinder is connected with the bottom ring, and the first annular cavity is formed by enclosing the third cylinder and the second cylinder;

wherein, the side wall of the second cylinder and the side wall of the first cylinder are provided with communication ports;

the first filter screen is covered on the inner wall of the second cylinder, and the second filter screen is covered on the inner wall of the first cylinder.

In one possible implementation, the second filter assembly includes a third screen horizontally disposed in the cartridge cavity below the first filter assembly;

wherein, be equipped with on the inner wall of section of thick bamboo chamber and supply the fixed second solid fixed ring of third filter screen.

In one possible implementation, the pre-filtration unit further comprises a cleaning assembly comprising a cleaning structure, a jacket, and a filter residue cleaning string; the cleaning structure is arranged in the tank body and is used for cleaning filter residues on the third filter screen to the inner wall side of the cylinder cavity; the jacket is fixedly arranged on the outer wall surface of the tank body, is provided with an annular circular cavity surrounding the outer wall of the tank body, the side wall of the tank body is provided with an annular opening communicated with the annular circular cavity and the cylindrical cavity, the annular circular cavity is used for receiving filter residues swept out by the cleaning structure, the jacket is provided with two end parts, and each end part is detachably provided with a sealing cover; the filter residue cleaning string is arranged in the annular circular cavity and is used for dragging filter residues in the annular circular cavity to the outside.

In one possible implementation, the filter residue cleaning string comprises a residue cleaning structure, an auxiliary block and a pull rope; the slag removing structures are arranged at intervals along the extending direction of the annular circular cavity, and each slag removing structure comprises a cylinder, a wall scraping wing, a contraction band and a hard rod; the cylinder has perforations; the wall scraping wings are arranged in an annular mode around the axis of the cylinder at intervals, one end of each wall scraping wing is integrally connected with the cylinder, the other end of each wall scraping wing extends outwards at an included angle with the axis of the cylinder, the wall scraping wings are enclosed to form an umbrella-shaped space, the plurality of shrink belts are arranged, and the shrink belts are respectively positioned between any two adjacent wall scraping wings; the hard rods are arranged in a plurality, each hard rod is arranged in one-to-one correspondence with each wall scraping wing, one end of each hard rod is embedded in the corresponding wall scraping wing, and the other end of each hard rod extends out along the opposite extending direction of the wall scraping wing; the auxiliary blocks are arranged in a plurality, each auxiliary block corresponds to each slag removing structure one by one, and the auxiliary blocks are arranged between any two adjacent cylinders; the stay cord is connected with each auxiliary block, and is used for pulling each auxiliary block to move close to the cylinder, so that each auxiliary block presses each hard rod, and each hard rod drives each wall scraping wing to overturn and open so as to scrape filter residues in the annular circular cavity.

In one possible implementation, the separation unit includes a tank, a coalescing filter element, an oil separation filter element, and an oil water separation filter element; the kettle body is provided with a cylindrical cavity, the top end of the kettle body is detachably connected with the bottom end of the tank body, a third fixed ring and a fourth fixed ring are arranged in the cavity, the third fixed ring and the fourth fixed ring are arranged at intervals along the vertical direction, the kettle body is provided with an oil outlet and a water outlet, the water outlet is positioned between the third fixed ring and the fourth fixed ring, and the oil outlet is positioned at the bottom end of the kettle body; the coalescing filter element is fixedly arranged on the third fixing ring; the oil separation filter element is positioned between the third fixed ring and the fourth fixed ring; the oil-water separation filter element is positioned on the fourth fixed ring.

In this implementation mode, set up the prefilter unit, can carry out coarse filtration and fine filtration to the lubricating oil before the water oil separating respectively through the internal first filter component and the second filter component that set up of jar, can prevent impurity entering separation unit in the lubricating oil. Simultaneously, the rotary filter screen seat has first annular chamber and second annular chamber, through the setting of first filter screen and second filter screen, can carry out secondary filtering preliminary treatment by the lubricating oil that first annular chamber got into, guarantees the filter effect, in addition, the active carbon that sets up in the second annular chamber can guarantee to adsorb the impurity in the lubricating oil, further guarantees the removal effect of impurity. This implementation mode can guarantee the filter effect through the prefilter unit that sets up, still carries out effectual protection to the filtration in the separation unit, avoids periodic dismouting, can practice thrift the cost simultaneously, and the practicality is strong.

Drawings

FIG. 1 is a schematic diagram of a lubricating oil separation device with pre-filtration treatment according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a prefilter unit of a lubricating oil separation device with prefilter according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a prefilter unit having a prefilter treated lube oil separation device according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of a separation unit of a lubricating oil separation device with pre-filtration treatment according to an embodiment of the present invention;

FIG. 5 is a schematic view of a rotary screen seat of a lubricating oil separation device with pre-filtration treatment according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a residue cleaning string of a lubricating oil separation device with pre-filtration treatment according to an embodiment of the present invention (only showing one residue cleaning structure and one auxiliary block);

FIG. 7 is a schematic diagram of a front view of a lubricating oil separation device with pre-filtration treatment provided in the embodiment of FIG. 6;

reference numerals illustrate:

10. a prefilter unit; 11. a tank body; 111. an oil inlet; 112. a first fixing ring; 113. a second fixing ring; 12. a first filter assembly; 121. a slewing bearing; 122. a driving structure; 1221. a driver; 1222. a gear; 123. rotating the filter screen seat; 1231. a base ring; 1232. a bottom ring; 1233. a first cylinder; 1234. a second cylinder; 1235. a third cylinder; 124. a first filter screen; 125. a second filter screen; 126. activated carbon; 13. a second filter assembly; 131. a third filter screen; 14. cleaning the assembly; 141. a rotating shaft; 142. a cleaning brush; 143. a motor; 144. a jacket; 1441. an annular circular cavity; 145. cleaning filter residues; 1451. a cylinder; 1452. scraping wall wings; 1453. a shrink band; 1454. a hard rod; 1455. an auxiliary block; 1456. a pull rope; 20. a separation unit; 21. a kettle body; 211. an oil outlet; 212. a water outlet; 213. a third fixing ring; 214. a fourth fixing ring; 22. coalescing the filter element; 23. an oil separation filter element; 24. an oil-water separation filter element.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Referring to fig. 1 to 4 together, a lubricating oil separation apparatus with a pre-filtration treatment according to the present invention will now be described. The lubricating oil separation device with the pre-filtering treatment comprises a pre-filtering unit 10 and a separation unit 20. The prefilter unit comprises a tank 11, a first filter assembly 12 and a second filter assembly 13. The tank 11 has a cylindrical cavity, an oil inlet 111 is formed in the top end, an oil outlet 211 is formed in the bottom end, and a first fixing ring 112 is arranged on the inner wall of the cylindrical cavity. The first filter assembly 12 is located at the top of the tank 11, and is capable of receiving the lubricating oil introduced through the oil inlet 111 and coarsely filtering the lubricating oil. The first filter assembly 12 includes a rotary screen base 123, a first screen 124, a second screen 125, and activated carbon 126. The rotary filter screen seat 123 is fixedly arranged on the first fixing ring 112, the rotary filter screen seat 123 is provided with a first annular cavity and a second annular cavity positioned outside the first annular cavity, the first annular cavity and the second annular cavity are arranged along the communication, the second annular cavity is communicated with the cylinder cavity, the first annular cavity is positioned right below the oil inlet 111 and can receive lubricating oil, the first filter screen 124 is arranged in the first annular cavity and is in annular coverage at the communication position of the first annular cavity and the second annular cavity, and the second filter screen 125 is arranged in the second annular cavity and is in annular coverage at the communication position of the second annular cavity and the cylinder cavity. Activated carbon 126 fills the second annular chamber. The second filter assembly 13 is located in the tank 11 below the first filter assembly 12, and is capable of finely filtering the coarsely filtered lubricating oil while allowing the filter residue to be discharged. The separation unit 20 is located below the tank 11 and is communicated with the oil outlet 211, and the separation unit 20 can perform oil-water separation on the filtered lubricating oil.

Compared with the prior art, the lubricating oil separating device with pre-filtering treatment provided by the embodiment is provided with the pre-filtering unit 10, and the first filtering component 12 and the second filtering component 13 arranged in the tank 11 can respectively perform coarse filtering and fine filtering on the lubricating oil before oil-water separation, so that impurities in the lubricating oil can be prevented from entering the separating unit 20. Simultaneously, rotary filter screen seat 123 has first annular chamber and second annular chamber, through the setting of first filter screen 124 and second filter screen 125, can carry out secondary filter preliminary treatment by the lubricating oil that first annular chamber got into, guarantees the filter effect, in addition, the active carbon 126 that sets up in the second annular chamber can guarantee to adsorb the impurity in the lubricating oil, further guarantees the removal effect of impurity. This implementation mode can guarantee the filter effect through the prefilter unit 10 that sets up, still carries out effectual protection to the filtration in the separation unit 20, avoids periodic dismouting, can practice thrift the cost simultaneously, and the practicality is strong.

In some embodiments, the first filter assembly 12 may be configured as shown in fig. 2-3. Referring to fig. 2-3, the first filter assembly 12 further includes a slewing bearing 121 and a drive structure 122. The pivoting support 121 has a bottom ring and a top ring, and the bottom ring of the pivoting support 121 is coaxially fixed to the first fixing ring 112. The driving structure 122 is disposed on the tank 11 and is in power connection with the top ring of the slewing bearing 121.

The driving structure 122 drives the top ring of the slewing bearing 121 to rotate, and the slewing bearing 121 drives the rotary filter screen seat 123 to rotate, so that a centrifugal force can be provided for lubricating oil entering the first annular cavity, the lubricating oil can be ensured to pass through the first filter screen 124 and the second filter screen 125 more quickly, and the filtering efficiency can be improved. In addition, since the fluidity of the lubricating oil is not very high, the lubricating oil entering through the oil inlet 111 can be made to uniformly enter into the first annular cavity by the continuous rotation of the first annular cavity.

The pore sizes of the first screen 124 and the second screen 125 are gradually reduced.

In some embodiments, the driving structure 122 may be as shown in fig. 3. Referring to fig. 3, the drive structure 122 includes a driver 1221 and a gear 1222. The driver 1221 is fixed to the tank 11. The gear 1222 is rotatably disposed on the tank 11, and the gear 1222 is connected to a power output end of the driver 1221 and is in power connection with the top ring of the slewing bearing 121.

The top ring outer edge of the slewing bearing 121 is provided with a tooth surface that meshes with the gear 1222.

By means of the engagement of the gears 1222, the stability of the transmission and thus the stability of the rotary screen seat 123 can be ensured.

In some embodiments, the rotary screen base 123 may be configured as shown in fig. 5. Referring to fig. 2, rotary screen base 123 includes a base ring 1231, a bottom ring 1232, a first cylinder 1233, a second cylinder 1234, and a third cylinder 1235. The base ring 1231 is coaxially fixed to the slewing bearing 121. The bottom ring 1232 is positioned below the slewing bearing 121 and is horizontally disposed. The first cylinder 1233 is coaxially disposed with the base ring 1231, the top end of the first cylinder 1233 is connected to the base ring 1231, and the bottom end of the first cylinder 1233 is connected to the bottom ring 1232. The second cylinder 1234 is located inside the first cylinder 1233 and is coaxially disposed with the first cylinder 1233, with the bottom end of the second cylinder 1234 being connected to the bottom ring 1232, and a second annular chamber being defined between the second cylinder 1234 and the first cylinder 1233. The third cylinder 1235 is located inside the second cylinder 1234 and is coaxially disposed with the second cylinder 1234, with the bottom end of the third cylinder 1235 being connected to the bottom ring 1232, and a first annular chamber being defined between the third cylinder 1235 and the second cylinder 1234.

Wherein communication ports are provided on the side wall of the second cylinder 1234 and the side wall of the first cylinder 1233.

Wherein the first filter 124 is disposed on the inner wall of the second cylinder 1234, and the second filter 125 is disposed on the inner wall of the first cylinder 1233.

The rotary filter screen seat 123 mainly can provide a carrier for the first filter screen 124 and the second filter screen 125, can be convenient for the installation of the first filter screen 124 and the second filter screen 125, can guarantee simultaneously to fill the activated carbon 126, its simple structure, it is convenient to make, the practicality is strong.

The base ring 1231 is screwed to the top ring of the slewing bearing 121.

In this embodiment, since the first filter screen 124 and the second filter screen 125 are involved to operate for a long time, the mesh openings of the filter screens are blocked by foreign substances, and thus the rotary screen holder 123 needs to be disassembled for cleaning. Therefore, the top end of the tank 11 can be provided with a top cover in flange connection, fig. 1 and 2 can be participated in, the driving structure 122 of the tank is installed in the pre-filtering unit, the first filtering component 12 and the second filtering component 13 arranged in the tank 11 can respectively perform coarse filtering and fine filtering on lubricating oil before oil-water separation, impurities in the lubricating oil can be prevented from entering the separating unit 20, further, the filtering structure in the separating unit 20 is effectively protected, periodic disassembly and assembly are avoided, meanwhile, the cost can be saved, and the practicability is high. The rotary screen holder 123 can be removed by removing the top cover.

In some embodiments, the second filter assembly 13 may have a structure as shown in fig. 3. Referring to fig. 3, the second filter assembly 13 includes a third filter screen 131, and the third filter screen 131 is horizontally disposed in the cylinder cavity and located below the first filter assembly 12, and the third filter screen 131 can ensure filtering of finer impurities to ensure the impurity removal effect of the lubricating oil.

Wherein, a second fixing ring 113 for fixing the third filter screen 131 is arranged on the inner wall of the cylinder cavity.

It should be noted that, the third filter screen 131 needs to have a carrier, so a circular plate can be disposed, a top plate surface of the circular plate is provided with a circular groove for the third filter screen 131 to be placed in, a via hole is disposed at the bottom of the circular groove, the third filter screen 131 can be welded in the circular groove, and the circular plate is fixedly disposed on the second fixing ring 113.

In some embodiments, the pre-filter unit may have a structure as shown in fig. 2 to 3. Referring to fig. 2-3, the pre-filtration unit further includes a cleaning assembly 14, the cleaning assembly 14 including a cleaning structure, a jacket 144, and a filter residue cleaning string 145. The jacket 144 is fixedly arranged on the outer wall surface of the tank body 11, the jacket 144 is provided with an annular circular cavity 1441 surrounding the outer wall of the tank body 11, the side wall of the tank body 11 is provided with an annular opening communicated with the annular circular cavity 1441 and the cylindrical cavity, the annular circular cavity 1441 can receive filter residues swept out by the cleaning brush 142, the jacket 144 is provided with two end parts, and each end part is detachably provided with a sealing cover. The residue cleaning string 145 is disposed in the annular cavity 1441, and is capable of drawing the residue in the annular cavity 1441 to the outside.

In this embodiment, the cleaning structure may include a rotating shaft 141, a cleaning brush 142, and a motor 143. The rotating shaft 141 is rotatably disposed in the can 11 in a vertical direction, and one end of the rotating shaft 141 extends into the cylinder chamber. The cleaning brushes 142 are at least two, the two cleaning brushes 142 are annularly arranged around the axis of the rotating shaft 141 at intervals, one end of each cleaning brush 142 is connected with the bottom end of the rotating shaft 141, the other end of each cleaning brush 142 extends out along the radial direction of the rotating shaft 141, and each cleaning brush 142 can synchronously rotate along with the rotating shaft 141 so as to sweep filter residues on the third filter screen 131 to the inner wall side of the cylinder cavity.

The motor 143 drives the rotating shaft 141 to rotate, so that the cleaning brush 142 is rotated, and then the accumulated impurities on the third filter screen 131 can be effectively swept to the edge of the third filter screen 131 and enter the annular circular cavity 1441 through the annular opening, so that the long-time filtering effect of the third filter screen 131 is ensured. The filter residue cleaning string 145 is arranged in the annular circular cavity 1441, and the filter residue cleaning string 145 is pulled out through opening a certain sealing cover so as to discharge filter residues accumulated in the annular circular cavity 1441 to the outside of the tank body 11.

The two ends of the jacket 144 may extend along the tangential direction of the tank 11, so that the sealing cover may be mounted, and the sealing cover and the jacket 144 may be screwed.

In some embodiments, the filter residue cleaning string 145 may have a structure as shown in fig. 6 to 7. Referring to fig. 6 to 7, the residue cleaning string 145 includes a residue removal structure, an auxiliary block 1455, and a pulling string 1456. The slag removing structure is provided in plurality, and each slag removing structure is disposed at intervals along the extending direction of the annular circular cavity 1441, and each slag removing structure includes a cylinder 1451, a scraping wing 1452, a shrink band 1453, and a hard rod 1454. The cylinder 1451 has perforations. The scraping wings 1452 are at least three, each scraping wing 1452 is annularly and alternately arranged around the axis of the cylinder 1451, one end of each scraping wing 1452 is integrally connected with the cylinder 1451, the other end of each scraping wing 1452 extends outwards at an included angle with the axis of the cylinder 1451, each scraping wing 1452 is enclosed to form an umbrella-shaped space, a plurality of shrink bands 1453 are arranged, and each shrink band 1453 is respectively located between any two adjacent scraping wings 1452. The hard rods 1454 are provided in plural, each hard rod 1454 is provided in one-to-one correspondence with each scraper blade 1452, and one end of each hard rod 1454 is fitted into the corresponding scraper blade 1452 and the other end extends in the opposite direction in which the scraper blade 1452 extends. The auxiliary blocks 1455 are provided in plurality, each auxiliary block 1455 corresponds to each slag removing structure one by one, and the auxiliary blocks 1455 are provided between any two adjacent cylinders 1451. The pull cord 1456 is connected to each auxiliary block 1455, and can pull each auxiliary block 1455 to move close to the cylinder 1451, so that the auxiliary blocks 1455 press each hard rod 1454, and each hard rod 1454 pulls each scraping wing 1452 to turn over and open, so as to scrape the filter residues in the annular circular cavity 1441.

The slag removing structure mainly comprises a cylinder 1451, a scraping wall wing 1452, a hard rod 1454 and a shrink band 1453, wherein the diameter of the cylinder 1451 is smaller than the diameter of the cross section circle of the annular circular cavity 1441, one end of the scraping wall wing 1452 is integrally connected with one end of the cylinder 1451, and the scraping wall wing 1452 and the cylinder 1451 are integrally formed, because the extending direction of the scraping wall wing 1452 forms an acute angle with the axial direction of the cylinder 1451 under the condition of no stress, and the scraping wall wing 1452 is turned open after being stressed, the included angle is increased, the end part of the scraping wall wing 1452 is ensured to be in tight contact with the inner wall of the annular circular cavity 1441, the distance between two adjacent scraping wall wings 1452 is increased, the shrinkage band 1453 can compensate the circular cavity 1441, but the shrinkage band 1453 does not have the slag scraping effect, and the shrink band 1453 is mainly enclosed with each scraping wall wing 1452 to form a sealed umbrella-shaped space, so that the filter residues entering the space can be prevented from leaking between the two scraping wall wings 1452, and the filter residues can be effectively ensured to be discharged. The hard rod 1454 mainly provides a keel for each wall scraping wing 1452, so that the wall scraping wings 1452 can be driven, the hard rod 1454 can be pressed by the auxiliary block 1455 after the auxiliary block 1455 moves relative to the cylinder 1451, and at the moment, each hard rod 1454 can turn over to drive each wall scraping wing 1452 to open.

The arrangement of the plurality of slag removal structures and the plurality of auxiliary blocks 1455 can ensure the effect of discharging the filter residues.

It should be noted that, for the placement of the residue cleaning string 145, the residue cleaning string may be pushed into the annular cavity 1441 directly through the sealing cover, but the cylinder 1451 needs to be guaranteed to be positioned at the forefront, and when cleaning is required, only the pulling rope 1456 needs to be pulled reversely. In addition, the combination of the cylinder 1451 and the scraper blade 1452 may be made of silicone rubber.

In some embodiments, the separation unit 20 may have a structure as shown in fig. 4. Referring to fig. 4, the separation unit 20 includes a tank 21, a coalescing filter element 22, an oil separation filter element 23, and an oil water separation filter element 24. The kettle body 21 is provided with a cylindrical cavity, the top end of the kettle body 21 is detachably connected with the bottom end of the tank body 11, a third fixed ring 213 and a fourth fixed ring 214 are arranged in the cavity, the third fixed ring 213 and the fourth fixed ring 214 are arranged at intervals along the vertical direction, an oil outlet 211 and a water outlet 212 are arranged on the kettle body 21, the water outlet 212 is positioned between the third fixed ring 213 and the fourth fixed ring 214, and the oil outlet 211 is positioned at the bottom end of the kettle body 21. The coalescing filter element 22 is located secured to the third retaining ring 213. The oil separation cartridge 23 is located between the third fixing ring 213 and the fourth fixing ring 214. The oil and water separation cartridge 24 is positioned on the fourth stationary ring 214.

The separation principle is as follows: the fine filtered lubricating oil is filtered by the coalescing filter element 22, and the emulsified water in the lubricating oil is separated by utilizing the different actions of the medium surface of the coalescing filter element 22 on the lubricating oil and water, namely, the emulsified water droplets trapped in the fiber layer are aggregated into large-particle water droplets, so that the water droplets are settled and separated. The water drops are intercepted by the oil-water separation filter element 24, so that the lubricating oil smoothly passes through and is discharged from an outlet, and the purpose of separation is achieved. The oil separation filter 23 can intercept the lubricating oil, and the water can smoothly pass through and be discharged from the water outlet 212. The coalescing filter element 22, the oil separation filter element 23 and the oil-water separation filter element 24 are all of the prior art, and are not described herein.

The structure can effectively ensure the water separation effect in the lubricating oil.

In this embodiment, the third fixing ring 213 and the fourth fixing ring 214 are referred to, so that the kettle body 21 can be separated, and fig. 1 and fig. 4 can be referred to as flange connection. Because the coalescing filter element 22, the oil separation filter element 23 and the oil-water separation filter element 24 need to be fixed, the coalescing filter element can be realized by adopting a carrier detachably connected with the fourth fixing ring 214 behind the third fixing ring 213, and the technology is the prior art, and is not described herein, and the fixing and separation of the third filter screen 131 can be mainly ensured. Because the oil separation filter screen is located between the third fixing ring 213 and the fourth fixing ring 214, the area between the third fixing ring 213 and the fourth fixing ring 214 can be divided to form an internal oil-water mixing cavity and a water receiving cavity at the outer periphery side, and the water receiving cavity is communicated with the water outlet 212.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims

1. Lubricating oil separation apparatus with pre-filtration treatment, characterized by comprising:

the prefilter unit comprises a tank body, a first filter component and a second filter component; the tank body is provided with a cylinder cavity, the top end of the tank body is provided with an oil inlet, the bottom end of the tank body is provided with an oil outlet, and the inner wall of the cylinder cavity is provided with a first fixing ring; the first filtering component is positioned at the top of the tank body and is used for receiving the lubricating oil entering from the oil inlet and carrying out coarse filtering on the lubricating oil; the first filter assembly comprises a rotary filter screen seat, a first filter screen, a second filter screen and active carbon; the rotary filter screen seat is fixedly arranged on the fixed ring and is provided with a first annular cavity and a second annular cavity positioned outside the first annular cavity, the first annular cavity is communicated with the second annular cavity, the second annular cavity is communicated with the cylinder cavity, and the first annular cavity is positioned right below the oil inlet and is used for receiving lubricating oil; the first filter screen is arranged in the first annular cavity and is annularly arranged at the communication position of the first annular cavity and the second annular cavity, and the second filter screen is arranged in the second annular cavity and is annularly arranged at the communication position of the second annular cavity and the cylinder cavity; the active carbon is filled in the second annular cavity; the second filter component is positioned in the tank body and below the first filter component and is used for carrying out fine filtration on the coarsely filtered lubricating oil and discharging filter residues; the second filter assembly comprises a third filter screen which is horizontally arranged in the cylinder cavity and is positioned below the first filter assembly; a second fixing ring for fixing the third filter screen is arranged on the inner wall of the cylinder cavity;

the separation unit is positioned below the tank body and communicated with the oil outlet, and is used for separating oil from water of the filtered lubricating oil; and

the cleaning assembly comprises a cleaning structure, a jacket and a filter residue cleaning string; the cleaning structure is arranged in the tank body and is used for cleaning filter residues on the third filter screen to the inner wall side of the cylinder cavity; the jacket is fixedly arranged on the outer wall surface of the tank body, is provided with an annular circular cavity surrounding the outer wall of the tank body, the side wall of the tank body is provided with an annular opening communicated with the annular circular cavity and the cylindrical cavity, the annular circular cavity is used for receiving filter residues swept out by the cleaning structure, the jacket is provided with two end parts, and each end part is detachably provided with a sealing cover; the filter residue cleaning string is arranged in the annular circular cavity and is used for dragging filter residues in the annular circular cavity to the outside; the filter residue cleaning string comprises a filter residue cleaning structure, an auxiliary block and a pull rope; the slag removing structures are arranged at intervals along the extending direction of the annular circular cavity, and each slag removing structure comprises a cylinder, a wall scraping wing, a contraction band and a hard rod; the cylinder has perforations; the wall scraping wings are arranged in an annular mode around the axis of the cylinder at intervals, one end of each wall scraping wing is integrally connected with the cylinder, the other end of each wall scraping wing extends outwards at an included angle with the axis of the cylinder, the wall scraping wings are enclosed to form an umbrella-shaped space, the plurality of shrink belts are arranged, and the shrink belts are respectively positioned between any two adjacent wall scraping wings; the hard rods are arranged in a plurality, each hard rod is arranged in one-to-one correspondence with each wall scraping wing, one end of each hard rod is embedded in the corresponding wall scraping wing, and the other end of each hard rod extends out along the opposite extending direction of the wall scraping wing; the auxiliary blocks are arranged in a plurality, each auxiliary block corresponds to each slag removing structure one by one, and the auxiliary blocks are arranged between any two adjacent cylinders; the stay cord is connected with each auxiliary block, and is used for pulling each auxiliary block to move close to the cylinder, so that each auxiliary block presses each hard rod, and each hard rod drives each wall scraping wing to overturn and open so as to scrape filter residues in the annular circular cavity.

2. The lube oil separation apparatus with pre-filtration treatment of claim 1 wherein said first filter assembly further comprises a slewing bearing and a drive structure; the slewing bearing is provided with a bottom ring and a top ring, and the bottom ring of the slewing bearing is coaxially and fixedly arranged on the first fixing ring; the driving structure is arranged on the tank body and is in power connection with the top ring of the slewing bearing.

3. The lubrication oil separation apparatus with pre-filtration treatment of claim 2, wherein the drive structure comprises a driver and a gear; the driver is fixedly arranged on the tank body; the gear is rotatably arranged on the tank body, connected with the power output end of the driver and in power connection with the top ring of the slewing bearing;

4. The lubrication oil separation apparatus with pre-filtration treatment according to claim 2, wherein the rotary screen base comprises a base ring, a bottom ring, a first cylinder, a second cylinder, and a third cylinder; the base ring is coaxially and fixedly arranged on the slewing bearing; the bottom ring is positioned below the slewing bearing and is horizontally arranged; the first cylinder and the base ring are coaxially arranged, the top end of the first cylinder is connected with the base ring, and the bottom end of the first cylinder is connected with the bottom ring; the second cylinder is positioned in the first cylinder and is coaxially arranged with the first cylinder, the bottom end of the second cylinder is connected with the bottom ring, and the second annular cavity is formed by enclosing the second cylinder and the first cylinder; the third cylinder is positioned in the second cylinder and is coaxially arranged with the second cylinder, the bottom end of the third cylinder is connected with the bottom ring, and the first annular cavity is formed by enclosing the third cylinder and the second cylinder;

5. The lubricating oil separation device with pre-filtration treatment as claimed in claim 1, wherein the separation unit comprises a tank body, a coalescing filter element, an oil separation filter element and an oil-water separation filter element; the kettle body is provided with a cylindrical cavity, the top end of the kettle body is detachably connected with the bottom end of the tank body, a third fixed ring and a fourth fixed ring are arranged in the cavity, the third fixed ring and the fourth fixed ring are arranged at intervals along the vertical direction, the kettle body is provided with an oil outlet and a water outlet, the water outlet is positioned between the third fixed ring and the fourth fixed ring, and the oil outlet is positioned at the bottom end of the kettle body; the coalescing filter element is fixedly arranged on the third fixing ring; the oil separation filter element is positioned between the third fixed ring and the fourth fixed ring; the oil-water separation filter element is positioned on the fourth fixed ring.