Detachable oil filter

Abstract

The detachable engine oil filter comprises an outer shell, a fixing spring, a filter element, a check valve and a sealing cover plate are arranged in the outer shell, a center pipe is arranged in the center of the filter element, a bypass valve is arranged in the center pipe, the sealing cover plate is in threaded connection with an opening in the end of the outer shell, and the sealing cover plate is in threaded connection with the opening in the end of the outer shell. And a sealing ring is also arranged between the sealing cover plate and the outer shell. The detachable sealing cover is arranged at the opening of the outer shell, and after the filter is replaced, the filter element in the filter can be taken out by opening the sealing cover of the used filter, so that the filter element of the outer shell can be conveniently separated from the filter element, the integrity of the outer shell is guaranteed, the outer shell can be reused, and the service life of the filter is prolonged. Due to the arrangement of the sealing ring structure on the sealing cover, the sealing performance between the sealing cover and the outer shell can be guaranteed, the situation of engine oil leakage is prevented, and then the safety of the filter is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a detachable oil filter. Background Art

[0002] The oil filter is located in the engine lubrication system. Its upstream is the oil pump, and its downstream is the various parts in the engine that need lubrication. Its function is to filter out harmful impurities in the oil from the oil pan, and supply clean oil to the crankshaft, connecting rod, camshaft, supercharger, piston ring and other moving parts to play a role in lubrication, cooling and cleaning, thereby extending the life of these parts. In order to ensure the filtering effect of impurities in the oil, the filter needs to be replaced frequently. However, the filter is limited by the processing technology. Its outer shell and sealing cover are generally stamped together by equipment. Since the sealing cover cannot be easily opened, after taking out the filter in the car, the used filter needs to be recycled. Since the outer shell and the filter element inside it cannot be recycled at the same time, it is necessary to use cutting equipment to dismantle the outer shell to remove the internal filter element, so as to realize the separate recycling of the outer shell and the filter element. The dismantled outer shell cannot be reused and can only be recycled as scrap steel, which causes waste of the filter shell. Utility Model Content

[0003] The purpose of the utility model is to avoid the deficiencies of the prior art and provide a detachable oil filter, thereby effectively solving the deficiencies in the prior art.

[0004] To achieve the above object, the technical solution adopted by the utility model is: a detachable oil filter, comprising an outer shell, wherein a fixing spring, a filter element, a check valve and a sealing cover plate are arranged in the outer shell, a center tube is arranged at the center of the filter element, a bypass valve is arranged in the center tube, the sealing cover plate is threadedly connected to the opening at the end of the outer shell, and a sealing ring is also arranged between the sealing cover plate and the outer shell;

[0005] The sealing cover plate is provided with an annular groove at a position corresponding to the edge of the outer shell, the sealing ring is placed in the annular groove, and the upper end of the sealing ring extends out of the annular groove. The outer shell is provided with an annular bevel groove on the inner side of the opening edge thereof, and the sealing cover plate is evenly provided with a plurality of tooth-shaped grooves at positions corresponding to the outer side of the annular groove, and the tooth-shaped grooves are connected to the annular groove.

[0006] Furthermore, the sealing cover plate is provided with an annular joint at a position corresponding to the inner side of the annular groove, the outer side of the joint is provided with an external thread, and the outer shell is provided with an internal thread matching the external thread on the inner side of the open end thereof.

[0007] Furthermore, the portion of the sealing ring exposed from the annular groove is in a bevel shape.

[0008] Furthermore, the sealing ring is made of rubber.

[0009] Furthermore, the filter element comprises a cylindrical filter paper and end covers arranged at both ends of the filter paper, and the bypass valve is installed in the central tube through the end covers.

[0010] Furthermore, the surfaces of the outer shell and the sealing cover plate are coated with an anti-corrosion coating.

[0011] The above technical scheme of the utility model has the following beneficial effects: the utility model provides a detachable sealing cover at the opening of the outer shell. After the filter is replaced, the used filter can open the sealing cover to take out the filter element inside the filter. This not only facilitates the separation of the filter element from the outer shell, but also ensures the integrity of the outer shell, thereby realizing the reuse of the outer shell. The setting of the sealing ring structure on the sealing cover can ensure the sealing between the sealing cover and the outer shell, thereby preventing oil leakage and further ensuring the safety of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic cross-sectional view of an embodiment of the utility model;

[0013] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0014] Figure 3 This is a partial cross-sectional schematic diagram of the sealing cover plate before assembly according to an embodiment of the utility model;

[0015] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0016] Figure 5 It is a top plan view of the sealing cover plate according to an embodiment of the utility model. DETAILED DESCRIPTION

[0017] In order to more clearly understand the above-mentioned purposes, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0018] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0019] like Figure 1-5As shown, a detachable oil filter described in this embodiment includes an outer shell 1, a fixing spring 2, a filter element 3, a check valve 4 and a sealing cover plate 5 are arranged in the outer shell 1, a center tube 6 is arranged at the center of the filter element 3, a bypass valve 7 is arranged in the center tube 6, the sealing cover plate 5 is threadedly connected to the opening at the end of the outer shell 1, and a sealing ring 8 is also arranged between the sealing cover plate 5 and the outer shell 1;

[0020] An annular groove is provided on the sealing cover plate 5 at a position corresponding to the edge of the outer shell 1, and the sealing ring 8 is placed in the annular groove. The upper end of the sealing ring 8 extends out of the annular groove. The outer shell 1 is provided with an annular groove 1a on the inner side of the opening edge thereof. The sealing cover plate 5 is evenly provided with a plurality of toothed grooves 5a at positions corresponding to the outer side of the annular groove, and the toothed grooves 5a are connected with the annular groove.

[0021] The toothed groove 5a and the groove 1a are used to provide a space for the sealing ring 8 to deform, thereby increasing the sealing area of ​​the sealing ring 8 and improving the sealing performance of the filter.

[0022] The sealing cover plate 5 is provided with an annular joint 5b at a position corresponding to the inner side of the annular groove. The joint 5b is arranged adjacent to the annular groove. An external thread is arranged on the outer side of the joint 5b. The outer shell 1 is provided with an internal thread matching the external thread on the inner side with an open end thereof. The joint 5b of the sealing cover plate 5 is threadedly connected to the opening of the outer shell 1.

[0023] The portion of the sealing ring 8 exposed from the annular groove is in a bevel shape, and the bevel structure facilitates the sealing ring 8 to deform.

[0024] Preferably, the sealing ring 8 is made of rubber.

[0025] The filter element 3 comprises a cylindrical filter paper 3 a and end covers 3 b arranged at both ends of the filter paper 3 a . The bypass valve 7 passes through the end covers 3 b and is installed in the central tube 6 .

[0026] The surfaces of the outer shell 1 and the sealing cover plate 5 are coated with an anti-corrosion coating, which is an anti-corrosion paint.

[0027] When assembling the utility model, first, the fixing spring 2, the filter element 3, the check valve 4 and the bypass valve 7 are installed in the outer shell 1 in sequence, and finally the sealing cover plate 5 is screwed on the opening of the outer shell 1. As the sealing cover plate 5 continues to move toward the edge of the outer shell 1, the sealing ring 8 will contact the edge of the outer shell 1, and the sealing cover plate 5 is continuously tightened. The sealing cover plate 5 and the edge of the outer shell 1 will squeeze the sealing ring 8, and the squeezed sealing ring 8 will be deformed. At this time, the deformed sealing ring 8 will fill the toothed groove 5a on the sealing cover plate 5 and the groove 1a at the edge of the outer shell. In this way, the sealing ring 8 can completely fill the gap between the outer shell 1 and the sealing cover plate 5, thereby improving the sealing performance of the filter. After the sealing cover plate 5 is completely screwed into the outer shell 1, the inner side of the sealing cover plate 5 abuts against the check valve 4, and in this way, the assembly work of the rear filter is completed.

[0028] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A detachable oil filter, characterized in that: It comprises an outer shell, wherein a fixing spring, a filter element, a check valve and a sealing cover plate are arranged in the outer shell, a central tube is arranged at the center of the filter element, a bypass valve is arranged in the central tube, the sealing cover plate is threadedly connected to the opening at the end of the outer shell, and a sealing ring is also arranged between the sealing cover plate and the outer shell; The sealing cover plate is provided with an annular groove at a position corresponding to the edge of the outer shell, the sealing ring is placed in the annular groove, and the upper end of the sealing ring extends out of the annular groove. The outer shell is provided with an annular bevel groove on the inner side of the opening edge thereof, and the sealing cover plate is evenly provided with a plurality of tooth-shaped grooves at positions corresponding to the outer side of the annular groove, and the tooth-shaped grooves are connected to the annular groove.

2. A detachable oil filter according to claim 1, characterized in that: The sealing cover plate is provided with an annular joint at a position corresponding to the inner side of the annular groove, the outer side of the joint is provided with an external thread, and the outer shell is provided with an internal thread matching the external thread on the inner side of the open end thereof.

3. A detachable oil filter according to claim 2, characterized in that: The portion of the sealing ring exposed from the annular groove is in a bevel shape.

4. A detachable oil filter according to claim 3, characterized in that: The sealing ring is made of rubber.

5. The detachable oil filter according to claim 1, characterized in that: The filter element comprises a cylindrical filter paper and end covers arranged at both ends of the filter paper, and the bypass valve is installed in the central tube through the end covers.

6. The detachable oil filter according to claim 1, characterized in that: The surfaces of the outer shell and the sealing cover plate are coated with an anti-corrosion coating.

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