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CN-224214501-U - Internal bypass oil return filter

CN224214501UCN 224214501 UCN224214501 UCN 224214501UCN-224214501-U

Abstract

The utility model discloses an internal bypass oil return filter which comprises a shell, wherein the shell comprises a shell body, a partition plate is arranged in the middle of the shell body, the shell body and the partition plate are of an integrated structure, a through hole is formed in the middle of the partition plate, a fine filter element is arranged above the partition plate on the shell body, a base is arranged at the top end of the shell body, a top cover is arranged at the top end of the base, a filter element pressing ring for pressing the fine filter element is arranged in the base, a coarse filter element is arranged below the partition plate on the shell body, through holes are uniformly formed in the outer side of the coarse filter element on the shell body, a bottom cover is arranged at one end of the coarse filter element on the shell body, a gasket is arranged on the outer side of the shell body, the gasket comprises a gasket body, and convex ribs are arranged on two sides of the gasket body. The utility model adopts the convex ribs to improve the sealing effect of the gasket, and the bypass valve and the filter element are integrally formed, thereby avoiding the risks of untimely replacement and the like of the bypass valve in use and reducing the manufacturing cost of the bypass valve.

Inventors

  • BIAN XUEXUE

Assignees

  • 镇江弗斯特过滤技术有限公司

Dates

Publication Date
20260508
Application Date
20250626

Claims (6)

  1. 1. An inner bypass oil return filter is characterized in that the shell (1) comprises a shell body (14), a partition plate is arranged in the middle of the shell body (14), the shell body (14) and the partition plate are of an integrated structure, through holes are formed in the middle of the partition plate, a fine filter element (8) is arranged above the partition plate, a base (4) is arranged at the top end of the shell (1), a top cover (5) is arranged at the top end of the base (4), a filter element pressing ring (7) for pressing the fine filter element (8) is arranged in the base (4), a coarse filter element (9) is arranged below the partition plate, the shell body (14) is uniformly provided with through holes (11) outside the coarse filter element (9), a bottom cover (3) is arranged at one end of the coarse filter element (9), a gasket (6) is arranged outside the shell body (1) in the base (4), the gasket (6) comprises a gasket body (61), and convex ribs (62) are arranged on two sides of the gasket body (61).
  2. 2. An internal bypass oil return filter as claimed in claim 1 wherein the bottom cover (3) is located within the housing (1) and is fitted with a bypass valve (2).
  3. 3. The internal bypass oil return filter of claim 1, wherein at least two clamping holes (12) are formed in the position, located on the bottom cover (3), of the shell body, and buckles matched with the clamping holes (12) are arranged on the bottom cover (3).
  4. 4. An inner bypass oil return filter as claimed in claim 3, wherein the housing body is provided with at least two positioning protrusions (13) at the bottom cover (3), and the bottom cover (3) is provided with positioning slots matched with the positioning protrusions (13).
  5. 5. The internal bypass oil return filter according to claim 1, wherein an upper limit ring (16) and a lower limit ring (17) are respectively arranged on two sides of the partition plate, and support ribs (15) are uniformly arranged on one side of the partition plate, which is positioned on the fine filter element (8).
  6. 6. The internal bypass oil return filter as claimed in claim 1, wherein the gasket body (61) and the ribs (62) are of an integrated structure, and the gasket (6) is a rubber member.

Description

Internal bypass oil return filter Technical Field The utility model relates to the technical field of filters, in particular to an internal bypass oil return filter. Background The main function of the filter of the hydraulic system is to filter solid contaminants in the working medium of the hydraulic system to maintain the cleanliness of the working medium, and most of the faults of the hydraulic system are caused by the contamination of the working medium, so the filter is indispensable to the hydraulic system. In the hydraulic transmission mechanism system, an oil filtering device is required to be arranged so as to filter impurities in oil products, scrap iron, oil sludge and the like. The prior publication No. CN221451880U discloses an in-box oil return filter core, which comprises a filter core shell and a retainer, wherein a fine filter core is arranged in the filter core shell, a base is arranged at one end of the filter core shell, an upper end cover is arranged at one end of the base, far away from the filter core shell, a filter core pressing ring is arranged between the upper end cover and the fine filter core, a coarse filter core and the retainer are arranged at one end, far away from the fine filter core, of the filter core shell, through holes are formed in two sides, located at one end, of the retainer, far away from the filter core shell, of the filter core shell, and a coarse filter core end cover and a bypass valve are arranged at one end, far away from the filter core shell, of the retainer. The oil enters through the interface on the side surface of the base, is filtered through the fine filter element, is discharged through the through holes on the two sides of the filter element shell after being filtered, can improve the filtering precision and the dirt receiving amount of the filter, and can filter oxides, harmful acid and moisture generated in the use process of lubricating oil, so that the service life of the lubricating oil is greatly prolonged, and the filter paper is fused into the filter element device, so that the filtering area is increased, and the filtering precision is improved. Although the prior art increases the filtering area to a certain extent and improves the filtering precision, the sealing effect at the base is poor, so that oil is easy to leak at the base, and in order to solve the technical problems, an internal bypass oil return filter is provided. Disclosure of utility model The utility model aims to provide an internal bypass oil return filter so as to solve the problems in the prior art. The technical scheme is that the inner bypass oil return filter comprises a shell, wherein the shell comprises a shell body, a partition plate is arranged in the middle of the shell body, the shell body and the partition plate are of an integrated structure, a through hole is formed in the middle of the partition plate, a fine filter element is arranged above the partition plate by the shell body, a base is arranged at the top end of the shell body, a top cover is arranged at the top end of the base, a filter element pressing ring for pressing the fine filter element is arranged in the base, a coarse filter element is arranged below the partition plate by the shell body, through holes are uniformly formed in the outer side of the coarse filter element by the shell body, a bottom cover is arranged at one end of the coarse filter element by the shell body, a gasket is arranged outside the shell by the base, the gasket comprises a gasket body, and convex ribs are arranged on two sides of the gasket body. Preferably, the bottom cover is positioned in the shell and is provided with a bypass valve. Preferably, the shell body is provided with at least two clamping holes at the bottom cover, and the bottom cover is provided with a buckle matched with the clamping holes. Preferably, the shell body is provided with at least two positioning protrusions at the bottom cover, and the bottom cover is provided with positioning slots matched with the positioning protrusions. Preferably, the both sides of baffle are provided with spacing ring and lower spacing ring respectively, the baffle is located fine filter core one side and evenly is provided with the support rib. Preferably, the gasket body and the ribs are of an integrated structure, and the gasket is a rubber piece. Compared with the prior art, the utility model has the beneficial effects that: 1. The gasket body both sides all are provided with protruding muscle, adopt protruding muscle can improve the sealed effect of gasket to sealing performance after the base installation is better, can not appear the problem of oil leak. 2. The casing main part is located bottom department and is provided with two draw-in holes at least, and the bottom is provided with the buckle with draw-in hole complex, has made things convenient for the dismouting of bottom and casing through buckle and draw-in hole, and the casing main part is located b