Oil-water separation filter

By designing the filter element, it can be removed from the opening of the lower end of the shell and rigidly connected the filter element to the shell, the problem of inconvenient replacement of the filter element and poor sealing effect in the prior art is solved, and the filter element can be easily disassembled and better sealing effect can be achieved.

CN222276819UActive Publication Date: 2024-12-31HEYUAN YAOTAI FILTER CO LTD
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Patent Information

Application Number
CN202420554002.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-03-21
Publication Date
2024-12-31
Estimated Expiration
2034-03-21

AI Technical Summary

Technical Problem

The existing oil-water separation filter needs to destroy the crimping of the sealing cover and shell when replacing the filter element, which is inconvenient to install and disassemble, and the sealing effect is not good.

Method used

An oil-water separation filter is designed. The filter element can be removed from the lower end opening of the outer shell. The lower end cover at the bottom of the filter element is directly connected to the water collecting cup. The water collecting cup can be removed and taken out for easy cleaning. The inner sealing ring is constantly squeezed during screw connection to improve the The sealing effect is that the shell has two upper and lower openings, and the filter element is rigidly connected to the shell to enhance stability.

Benefits of technology

It realizes the convenient disassembly and cleaning of the filter element, improves the sealing effect and the stability of the filter element, avoids equipment damage when replacing the filter element, and enhances the convenience of the equipment and sealing performance.

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Abstract

The oil-water separation filter comprises a shell, a filter element, a threaded cover and a sealing cover, the threaded cover is connected to an opening in the upper end of the shell in a threaded mode, the sealing cover covers the threaded cover and is fixedly connected with the edge of the opening in the upper end of the shell, an inner sealing ring is arranged between the threaded cover and the upper end of the filter element, and a lower end cover is arranged at the lower end of the filter element. The lower end cover is provided with an upper fixing groove and a lower connecting groove, external threads are arranged on the outer side portion of the lower end cover and are in threaded connection with the lower end opening of the shell, and when the lower end cover is in threaded connection with the lower end opening of the shell, the upper end of the filter element abuts against the inner sealing ring. The shell is provided with the upper opening and the lower opening, the upper opening is connected with the threaded cover and the sealing cover, the lower opening is connected with the filter element, the filter element can be detached and taken out from the lower opening of the shell, and curled edges of the shell and the sealing cover do not need to be damaged. The lower end cover at the bottom of the filter element can be directly connected with the water collecting cup which can be detached and taken out and is convenient to clean.
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Description

Technical Field

[0001] The utility model relates to a fuel filter, in particular to an oil-water separation filter. Background Art

[0002] At present, the existing oil-water separation filter generally includes a housing, a filter element, a threaded cover and a sealing cover. The bottom of the filter element is pre-tightened by a spring, and a space is reserved at the bottom of the housing to collect water. A drain valve is set at the bottom of the housing to facilitate drainage. Since the sealing cover is connected to the opening curling of the housing, the filter element needs to be inserted from the upper opening of the housing when installing, and the threaded cover is covered, and then the sealing cover is connected to the housing opening. When replacing the filter element, the sealing cover and the housing curling need to be destroyed. For example, the structure of the easy-to-disassemble oil-water separator with patent application number 2010206336615 adopts the above-mentioned installation structure. Summary of the invention

[0003] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the utility model is to provide an oil-water separation filter for filtering fuel in a fuel tank of an engineering machinery.

[0004] The purpose of the utility model is achieved through the following technical solutions: an oil-water separation filter, comprising a shell, a filter element, a threaded cover and a sealing cover, wherein the threaded cover is screwed on the upper opening of the shell, the sealing cover is covered on the threaded cover and fixedly connected to the edge of the upper opening of the shell, an inner sealing ring is arranged between the threaded cover and the upper end of the filter element, a lower end cover is arranged at the lower end of the filter element, the lower end cover has an upper fixing groove and a lower connecting groove, an outer side of the lower end cover is provided with an external thread, the external thread is screwed with the lower opening of the shell, when the lower end cover is screwed with the lower opening of the shell, the upper end of the filter element abuts against the inner sealing ring. The shell of the utility model has two upper and lower openings, the upper opening is connected to the threaded cover and the sealing cover, and the lower opening is connected to the filter element, and the filter element can be disassembled and removed from the lower opening of the shell without destroying the shell and the sealing cover. The lower end cover at the bottom of the filter element can be directly connected to the water collecting cup, and the water collecting cup can be disassembled and removed for easy cleaning. When the threaded filter element is installed in the housing, it will continuously squeeze the inner sealing ring, which will provide a better sealing effect.

[0005] As an improvement of the oil-water separation filter of the utility model, the inner side wall of the lower connecting groove is provided with an internal thread, and the internal thread is connected to the water collecting cup. The bottom of the water collecting cup is conical, and a drain valve is provided at the conical bottom. The water collecting cup is directly screwed to the filter element, and the water collecting cup can be separated from the filter element. The disassembled water collecting cup is convenient for cleaning. The water collecting cup is made of transparent plastic material, and the water level inside the water collecting cup can be seen from the outside, which is convenient for manual drainage.

[0006] As an improvement of the oil-water separation filter of the utility model, the lower end of the inner sealing ring is provided with an outer annular step, and the upper end opening of the inner sealing ring is provided with an inner annular step. The inner annular step is used for sleeve connection on the oil outlet nozzle.

[0007] As an improvement of the oil-water separation filter of the utility model, the filter element also includes an upper end cover and a filter material, the upper end of the filter material is bonded to the upper end cover, the lower end of the filter material is bonded to the upper fixing groove, and a plug-in hole is provided in the middle of the upper end cover, and the outer annular step is plugged into the plug-in hole.

[0008] As an improvement of the oil-water separation filter of the utility model, an oil outlet hole is provided in the middle of the threaded cover, the edge of the oil outlet hole is bent inward to form an oil outlet nozzle, and the inner sealing ring is sleeved on the oil outlet nozzle.

[0009] As an improvement of the oil-water separation filter of the utility model, a water filter hole is provided in the middle of the lower end cover, and the water filter hole is connected to the water collection cup. A plurality of oil inlet holes are provided at intervals on the threaded cover, and the oil inlet holes are connected to the cavity of the shell. The oil is filtered by the filter material of the filter element and discharged from the oil outlet hole, and the filtered water will sink and flow into the water collection cup from the water filter hole.

[0010] As an improvement of the oil-water separation filter of the utility model, the threaded cover is bent to form an annular abutting boss, the middle part of the sealing cover is bent downward to form an abutting groove, and the abutting groove abuts on the annular abutting boss. The annular abutting boss has the function of a reinforcing rib, which can prevent the cup from being squeezed and deformed when connecting the device.

[0011] As an improvement of the oil-water separation filter of the utility model, a sealing ring installation groove is further provided on the sealing cover, and an outer sealing ring is provided in the sealing ring installation groove.

[0012] As an improvement of the oil-water separation filter of the utility model, the cross section of the sealing ring installation groove is square, and the cross section of the outer sealing ring is square. The outer sealing ring and the sealing ring installation groove of the square structure can improve the sealing effect.

[0013] As an improvement of the oil-water separation filter of the utility model, the edge of the sealing cover is fixedly connected to the edge of the upper opening of the shell by means of crimping.

[0014] The beneficial effects of the utility model are as follows: the housing of the utility model has two openings, the upper opening is connected to the threaded cover and the sealing cover, and the lower opening is connected to the filter element. The filter element can be disassembled and taken out from the lower opening of the housing without damaging the curling of the housing and the sealing cover. The lower end cover at the bottom of the filter element can be directly connected to the water collecting cup, and the water collecting cup can be disassembled and taken out for easy cleaning. When the threaded filter element is installed in the housing, it will continuously squeeze the inner sealing ring, and the sealing effect is better. The filter element is rigidly connected to the housing, and will not vibrate or swing when impacted by oil pressure, which effectively improves the stability of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the utility model;

[0016] Figure 2 It is a cross-sectional view of the filter element of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the inner sealing ring of the utility model;

[0018] Figure 4 It is a schematic diagram of the structure in which the sealing cover of the utility model is covered on the threaded cover;

[0019] Figure 5 It is a schematic diagram of the lower end cover structure of the utility model;

[0020] The accompanying drawings are marked as follows: 1, outer shell, 2, filter element, 3, threaded cover, 4, sealing cover, 5, inner sealing ring, 6, water collecting cup, 7, water filter hole, 8, oil inlet hole, 9, annular top boss, 10, top groove, 21, lower end cover, 22, upper fixing groove, 23, lower connecting groove, 24, upper end cover, 25, filter material, 26, plug-in hole, 51, outer annular step, 52, inner annular step, 31, oil outlet hole, 32, oil outlet nozzle, 41, sealing ring installation groove, 42, outer sealing ring. DETAILED DESCRIPTION

[0021] 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.

[0022] 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.

[0023] 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.

[0024] like Figure 1-Figure 5 As shown, an oil-water separation filter comprises a housing 1, a filter element 2, a threaded cover 3 and a sealing cover 4, wherein the threaded cover 3 is screwed on the upper opening of the housing 1, the sealing cover 4 is covered on the threaded cover 3 and fixedly connected to the edge of the upper opening of the housing 1, an inner sealing ring 5 is arranged between the threaded cover 3 and the upper end of the filter element 2, a lower end cover 21 is arranged at the lower end of the filter element 2, the lower end cover 21 has an upper fixing groove 22 and a lower connecting groove 23, an outer side of the lower end cover 21 is provided with an external thread, the external thread is screwed on the lower opening of the housing 1, when the lower end cover 21 is screwed on the lower opening of the housing 1, the upper end of the filter element 2 abuts against the inner sealing ring 5. The housing 1 of the utility model has two upper and lower openings, the upper opening is connected to the threaded cover 3 and the sealing cover 4, and the lower opening is connected to the filter element 2, and the filter element 2 can be disassembled and taken out from the lower opening of the housing 1 without destroying the housing 1 and the sealing cover 4. The lower end cover at the bottom of the filter element can be directly connected to the water collecting cup, and the water collecting cup can be disassembled and taken out for easy cleaning. When the screw-connected filter element 2 is installed in the housing 1, the inner sealing ring 5 will be continuously squeezed, and the sealing effect is better.

[0025] Preferably, the inner wall of the lower connecting groove 23 is provided with an internal thread, and the internal thread is connected to the water collecting cup 6. The bottom of the water collecting cup 6 is conical, and a drain valve is provided at the conical bottom. The water collecting cup 6 is directly screwed to the filter element 2, and the water collecting cup 6 can be separated from the filter element 2. The disassembled water collecting cup 6 is convenient for cleaning. The water collecting cup 6 is made of transparent plastic material, and the water level inside the water collecting cup can be seen from the outside, which is convenient for manual drainage.

[0026] Preferably, an outer annular step 51 is provided at the lower end of the inner sealing ring 5, and an inner annular step 52 is provided at the upper end opening of the inner sealing ring 5. The inner annular step 52 is used for sleeve connection on the oil outlet nozzle.

[0027] Preferably, the filter element 2 also includes an upper end cover 24 and a filter material 25, the upper end of the filter material 25 is bonded to the upper end cover 24, the lower end of the filter material 25 is bonded to the upper fixing groove 22, and a plug hole 26 is provided in the middle of the upper end cover 24, and the outer annular step 51 is plugged into the plug hole.

[0028] Preferably, an oil outlet hole 31 is provided in the middle of the threaded cover 3 , the edge of the oil outlet hole 31 is bent inward to form an oil outlet nozzle 32 , and the inner sealing ring 5 is sleeved on the oil outlet nozzle 32 .

[0029] Preferably, a water filter hole 7 is provided in the middle of the lower end cover 21, and the water filter hole 7 is connected to the water collection cup 6. A plurality of oil inlet holes 8 are provided at intervals on the threaded cover 3, and the oil inlet holes 8 are connected to the cavity of the housing 1. The oil is filtered by the filter material of the filter element and discharged from the oil outlet hole 31, and the filtered water sinks and flows into the water collection cup 6 from the water filter hole.

[0030] Preferably, the threaded cover 3 is bent to form an annular abutting boss 9, and the middle part of the sealing cover 4 is bent downward to form an abutting groove 10, which abuts against the annular abutting boss 9. The annular abutting boss 9 has the function of a reinforcing rib, which can prevent the cup from being squeezed and deformed when connecting the device.

[0031] Preferably, the sealing cover 4 is further provided with a sealing ring installation groove 41 , and an outer sealing ring 42 is provided in the sealing ring installation groove 41 .

[0032] Preferably, the cross section of the sealing ring installation groove 41 is square, and the cross section of the outer sealing ring 42 is square. The outer sealing ring and the sealing ring installation groove of the square structure can improve the sealing effect.

[0033] Preferably, the edge of the sealing cover 4 is fixedly connected to the upper opening edge of the shell 1 by means of crimping.

[0034] 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. An oil-water separation filter, comprising a housing, a filter element, a threaded cover and a sealing cover, wherein the threaded cover is screwed on the upper opening of the housing, and the sealing cover is covered on the threaded cover and fixedly connected to the edge of the upper opening of the housing, characterized in that: An inner sealing ring is provided between the threaded cover and the upper end of the filter element, a lower end cover is provided at the lower end of the filter element, the lower end cover has an upper fixing groove and a lower connecting groove, an outer side of the lower end cover is provided with an external thread, the external thread is screwed to the lower end opening of the outer shell, when the lower end cover is screwed to the lower end opening of the outer shell, the upper end of the filter element abuts against the inner sealing ring.

2. The oil-water separation filter according to claim 1, characterized in that: The inner side wall of the lower connecting groove is provided with an internal thread, and the internal thread is connected to the water collecting cup.

3. The oil-water separation filter according to claim 1, characterized in that: The lower end of the inner sealing ring is provided with an outer annular step, and the upper end opening of the inner sealing ring is provided with an inner annular step.

4. The oil-water separation filter according to claim 3, characterized in that: The filter element also includes an upper end cover and filter material, the upper end of the filter material is bonded to the upper end cover, the lower end of the filter material is bonded to the upper fixing groove, a plug hole is provided in the middle of the upper end cover, and the outer annular step is plugged into the plug hole.

5. The oil-water separation filter according to claim 1, characterized in that: An oil outlet hole is arranged in the middle of the threaded cover, the edge of the oil outlet hole is bent inwards to form an oil outlet nozzle, and the inner sealing ring is sleeved on the oil outlet nozzle.

6. The oil-water separation filter according to claim 2, characterized in that: A water filter hole is provided in the middle of the lower end cover, and the water filter hole is communicated with the water collecting cup.

7. The oil-water separation filter according to claim 1, characterized in that: An annular abutting boss is bent on the threaded cover, and an abutting groove is bent downward in the middle of the sealing cover, and the abutting groove abuts on the annular abutting boss.

8. The oil-water separation filter according to claim 1, characterized in that: The sealing cover is also provided with a sealing ring installation groove, and an outer sealing ring is arranged in the sealing ring installation groove.

9. The oil-water separation filter according to claim 8, characterized in that: The cross section of the sealing ring installation groove is square, and the cross section of the outer sealing ring is square.

10. The oil-water separation filter according to claim 1, characterized in that: The edge of the sealing cover is fixedly connected to the upper opening edge of the shell by means of crimping.