Diesel oil filter capable of preventing sealing ring from deforming

Abstract

The utility model discloses a diesel oil filter capable of preventing a sealing ring from deforming, which comprises a shell, a threaded sealing cover, an outer sealing ring and a clamping ring, an annular connecting groove is arranged on the outer side of the threaded sealing cover, an annular inserting pin is arranged on the edge of the clamping ring, the outer sealing ring is sleeved on the clamping ring, and an inclined surface is arranged on the side surface of the annular inserting pin. And when the annular insertion pin is inserted into the annular connection groove, the outer sealing ring can be extruded outwards. According to the utility model, the annular plugging pin can extrude the outer sealing ring through the structure of the inclined surface, so that the outer sealing ring expands outwards, the outer sealing ring can be contacted with equipment more tightly, and the clamping ring is propped against the inner part of the outer sealing ring, so that the deformation of the outer sealing ring can be prevented.

Description

Technical Field

[0001] The utility model relates to a diesel filter, in particular to a diesel filter capable of preventing a sealing ring from deforming. Background Art

[0002] At present, the existing diesel filter generally includes an outer shell, a threaded sealing cover, a filter element, a spring, an inner sealing ring and an outer sealing ring, wherein the filter element is accommodated in the cavity of the outer shell, the threaded sealing cover is sealed at the opening of the outer shell, the inner sealing ring seals the gap between the oil outlet and the filter element, the outer sealing ring seals the gap between the filter and the equipment, and the outer sealing ring is fixed by a groove on the threaded sealing cover. When the filter is connected to the equipment, the outer sealing ring is squeezed and deformed. The sealing effect of the deformed sealing ring is poor, which easily leads to the disadvantage of oil leakage.

[0003] For example, the patent application number is 2019222819136, and the patent name is a high-strength and high-precision diesel filter. The outer sealing ring of the diesel filter is installed through the groove on the outside of the screw plate. The upper end of the outer sealing ring is exposed outside the groove. When connected and installed with the equipment, the outer sealing ring is prone to displacement and deformation. Summary of the invention

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the utility model aims to provide a diesel filter that prevents the sealing ring from deforming.

[0005] The purpose of the utility model is achieved through the following technical solutions: A diesel filter that prevents the deformation of the sealing ring, including a shell, a threaded sealing cover, an outer sealing ring and a clamping ring, the upper end face of the threaded sealing cover is provided with an annular connecting groove, the edge of the clamping ring is provided with an annular plug-in pin, the outer sealing ring is sleeved on the clamping ring, the side of the annular plug-in pin is provided with an inclined surface, and the annular plug-in pin can squeeze the outer sealing ring outward when plugged into the annular connecting groove. The threaded sealing cover is provided with a plurality of oil inlet holes at intervals, and the unfiltered oil enters the shell cavity from the oil inlet holes, and the filtered oil is discharged from the oil outlet hole of the threaded sealing cover. The annular plug-in pin can squeeze the outer sealing ring through the inclined surface structure, so that the outer sealing ring expands outward, and can make the outer sealing ring contact more closely with the equipment, and the clamping ring is pressed against the inner part of the outer sealing ring, so that the outer sealing ring can be prevented from deforming.

[0006] As an improvement of the diesel filter for preventing the sealing ring from deforming according to the utility model, a limiting boss is horizontally extended from the upper edge of the annular plug-in pin, and when the bottom of the annular plug-in pin contacts the bottom of the annular connecting groove, the limiting boss presses against the outer sealing ring.

[0007] As an improvement of the diesel filter for preventing the sealing ring from deforming, the utility model further comprises a filter element, wherein the oil outlet end of the filter element is fixed on the inner side surface of the threaded sealing cover.

[0008] As an improvement of the diesel filter for preventing the sealing ring from deforming, the threaded sealing cover is provided with an oil outlet hole in the middle, the oil inlet end of the oil outlet hole is provided with an external threaded connection part, the oil outlet end of the filter element is provided with an internal threaded hole, and the internal threaded hole is threadedly connected to the external threaded connection part.

[0009] As an improvement of the diesel filter for preventing the sealing ring from deforming according to the utility model, a sealing gasket is arranged between the filter element and the threaded sealing cover.

[0010] As an improvement of the diesel filter for preventing the sealing ring from deforming according to the utility model, an inner sealing ring is sleeved on the outer side of the threaded sealing cover, and the inner sealing ring contacts the inner side wall of the outer shell.

[0011] As an improvement of the diesel filter for preventing the sealing ring from deforming, the opening edge of the housing is bent inwardly to form a limit rib, and the limit rib abuts against the threaded sealing cover. After the threaded sealing cover and the filter element are installed in the housing cavity together, the opening edge of the housing is squeezed by external force to bend the edge inwardly to form a limit rib, which can limit the threaded sealing cover and the filter element from popping outward.

[0012] As an improvement of the diesel filter for preventing the sealing ring from deforming, the utility model further comprises a spring, which is arranged at the bottom of the cavity of the housing and abuts against the bottom of the filter element. The spring can pre-tighten the filter element and reduce the vibration of the filter element when it is impacted by oil pressure.

[0013] The beneficial effect of the utility model is that the annular plug pin of the utility model can squeeze the outer sealing ring through the inclined structure, so that the outer sealing ring expands outward, which can make the outer sealing ring contact with the equipment more closely, and the clamping ring is pressed against the inner part of the outer sealing ring to prevent the outer sealing ring from deforming. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional view of the utility model;

[0015] Figure 2 It is a schematic diagram of the clamp ring structure of the utility model;

[0016] The accompanying drawings are marked as follows: 1. outer casing, 2. threaded sealing cover, 3. outer sealing ring, 4. clamping ring, 5. annular connecting groove, 6. annular plug pin, 7. inclined surface, 8. oil inlet hole, 9. oil outlet hole, 10. limiting boss, 11. filter element, 12. external threaded connection part, 13. sealing gasket, 14. inner sealing ring, 15. limiting rib, 16. spring. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0019] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0020] like Figure 1 and Figure 2 As shown, a diesel filter for preventing the deformation of the sealing ring includes a housing 1, a threaded sealing cover 2, an outer sealing ring 3 and a clamping ring 4. The upper end surface of the threaded sealing cover 2 is provided with an annular connecting groove 5, and the edge of the clamping ring 4 is provided with an annular plug-in pin 6. The outer sealing ring 3 is sleeved on the clamping ring 4. The side of the annular plug-in pin 6 is provided with an inclined surface 7. When the annular plug-in pin 6 is plugged into the annular connecting groove 5, it can squeeze the outer sealing ring 3 outward. The threaded sealing cover 2 is provided with a plurality of oil inlet holes 8 at intervals. The unfiltered oil enters the cavity of the housing 1 from the oil inlet holes, and the filtered oil is discharged from the oil outlet hole 9 of the threaded sealing cover 2. The annular plug-in pin 6 can squeeze the outer sealing ring 3 through the structure of the inclined surface 7, so that the outer sealing ring 3 expands outward, and the outer sealing ring 3 can be more closely contacted with the equipment. Moreover, the clamping ring 4 is pressed against the inner part of the outer sealing ring 3, so that the outer sealing ring 3 can be prevented from deforming.

[0021] Preferably, a limiting boss 10 is horizontally extended from the upper edge of the annular plug pin 6 , and when the bottom of the annular plug pin 6 contacts the bottom of the annular connecting groove 5 , the limiting boss 10 abuts against the outer sealing ring 3 .

[0022] Preferably, it further comprises a filter element 11 , and the oil outlet end of the filter element 11 is fixed on the inner side surface of the threaded sealing cover 2 .

[0023] Preferably, an oil outlet hole 9 is provided in the middle of the threaded sealing cover 2 , an external threaded connection part 12 is provided at the oil inlet end of the oil outlet hole 9 , an internal threaded hole is provided at the oil outlet end of the filter element 11 , and the internal threaded hole is threadedly connected to the external threaded connection part 12 .

[0024] Preferably, a sealing gasket 13 is provided between the filter element 11 and the threaded sealing cover 2 .

[0025] Preferably, an inner sealing ring 14 is sleeved on the outer side of the threaded sealing cover 2 , and the inner sealing ring 14 contacts the inner side wall of the outer shell 1 .

[0026] Preferably, the opening edge of the housing 1 is bent inward to form a limit rib 15, and the limit rib 15 abuts against the threaded sealing cover 2. After the threaded sealing cover 2 and the filter element 11 are installed in the cavity of the housing 1 together, the opening edge of the housing 1 is squeezed by external force to bend the edge inward to form the limit rib 15, which can limit the threaded sealing cover 2 and the filter element 11 from popping outward.

[0027] Preferably, a spring 16 is further included, which is arranged at the bottom of the cavity of the housing 1 and abuts against the bottom of the filter element 11. The spring 16 can pre-tighten the filter element 11 and reduce the vibration of the filter element when it is impacted by oil pressure.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and structures of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A diesel filter for preventing the sealing ring from deforming, characterized in that: It includes an outer shell, a threaded sealing cover, an outer sealing ring and a clamping ring. The upper end surface of the threaded sealing cover is provided with an annular connecting groove, the edge of the clamping ring is provided with an annular plug-in pin, the outer sealing ring is sleeved on the clamping ring, and the side surface of the annular plug-in pin is provided with an inclined surface. When the annular plug-in pin is plugged into the annular connecting groove, it can squeeze the outer sealing ring outward.

2. The diesel filter for preventing the sealing ring from deforming according to claim 1, characterized in that: A limiting boss is horizontally extended from the upper edge of the annular plug pin, and when the bottom of the annular plug pin contacts the bottom of the annular connecting groove, the limiting boss abuts against the outer sealing ring.

3. The diesel filter for preventing the sealing ring from deforming according to claim 1, characterized in that: It also includes a filter element, the oil outlet end of which is fixed on the inner side of the threaded sealing cover.

4. The diesel filter for preventing the sealing ring from deforming according to claim 3, characterized in that: An oil outlet hole is arranged in the middle of the threaded sealing cover, an external threaded connection part is arranged at the oil inlet end of the oil outlet hole, an internal threaded hole is arranged at the oil outlet end of the filter element, and the internal threaded hole is threadedly connected with the external threaded connection part.

5. The diesel filter for preventing the sealing ring from deforming according to claim 4, characterized in that: A sealing gasket is provided between the filter element and the threaded sealing cover.

6. The diesel filter for preventing the sealing ring from deforming according to claim 1, characterized in that: An inner sealing ring is sleeved on the outer side of the threaded sealing cover, and the inner sealing ring is in contact with the inner side wall of the outer shell.

7. The diesel filter for preventing the sealing ring from deforming according to claim 1, characterized in that: The opening edge of the shell is bent inward to form a limit rib, and the limit rib abuts against the threaded sealing cover.

8. The diesel filter for preventing the sealing ring from deforming according to claim 3, characterized in that: It also includes a spring, which is arranged at the bottom of the cavity of the shell and abuts against the bottom of the filter element.

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