Machine filter one-way valve structure

Abstract

The utility model discloses a one-way valve structure for machine filtration, and relates to the technical field of machine filtration. The machine filter one-way valve structure comprises a machine filter body, and an oil outlet and a plurality of oil inlets are formed in the top of the machine filter body; and the non-return assembly is used for preventing engine oil in the machine filter body from flowing back, the non-return assembly comprises an annular mounting box connected to the top of the machine filter body in a threaded mode, and a plurality of oil inlet holes are formed in the upper surface of the annular mounting box in a circumferential array mode. By arranging the non-return assembly, when engine oil is not injected any more, the sliding ring can automatically move upwards under the action of the reset spring, so that the upper surface of the connecting ring abuts against the lower surface of the fixed ring, and sealing of a gap between the fixed ring and the sliding ring is achieved under the action of the first sealing ring; furthermore, the structure is simple to reset, the sealing performance is good, and the condition of engine oil leakage can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of machine filters, in particular to a one-way valve structure for a machine filter. Background Art

[0002] The oil filter is an important part of the automobile engine. Its main function is to filter impurities in the engine lubricating oil to ensure the cleanliness of the engine oil and the normal operation of the engine. The oil filter can capture and remove impurities such as dirt, metal particles, carbon deposits and soot particles in the lubricating oil to prevent these impurities from causing wear and damage to the engine.

[0003] The one-way valve structure of the existing oil filter is generally trumpet-shaped, and is inverted on the chassis of the filter during installation. However, since the inner side of the trumpet-shaped one-way valve body is a straight inclined structure, the elastic force is small and the sealing performance is weak. After a period of use, a large amount of oil leakage will occur under the influence of pressure.

[0004] Therefore, we propose an oil filter one-way valve structure to solve the above-mentioned problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an oil filter one-way valve structure, which solves the problem that the oil filter is prone to backflow leakage after long-term use.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: an oil filter one-way valve structure, comprising:

[0007] The oil filter body has an oil outlet and a plurality of oil inlets respectively formed on the top of the oil filter body;

[0008] A check assembly, which is used to prevent oil backflow inside the oil filter body, the check assembly includes an annular mounting box threadedly connected to the top of the oil filter body, and the upper surface of the annular mounting box is provided with a plurality of oil inlet holes in a circumferential array, the inner wall of the annular mounting box is slidably provided with a sliding ring, and the inner wall of the annular mounting box is fixedly provided with a fixing ring corresponding to the sliding ring, the check assembly also includes a plurality of return springs fixedly provided in a circumferential array on the inner top wall of the annular mounting box, and the bottom end of the return spring is fixedly connected to the upper surface of the sliding ring;

[0009] A sealing assembly, the sealing assembly includes a mounting ring fixed on the inner wall of the annular mounting box, and the upper surface of the mounting ring is respectively provided with a first annular cavity and a second annular cavity, and the inner walls of the first annular cavity and the second annular cavity are respectively provided with a first piston sealing ring and a second piston sealing ring for alternating sliding, and the sealing assembly also includes a sealing ring arranged inside the annular mounting box for sealing the oil inlet.

[0010] Preferably, a connecting ring is fixedly provided on the outer surface of the sliding ring, a first sealing ring is fixedly provided on the upper surface of the connecting ring, and a second sealing ring is fixedly provided on the lower surface of the annular mounting box.

[0011] Preferably, a third sealing ring is fixedly provided on the inner ring surface of the sliding ring, and the inner ring surface of the third sealing ring is slidably connected to the inner wall of the annular installation box.

[0012] Preferably, a pressure ring is fixedly provided on the lower surface of the sliding ring, and the bottom end of the pressure ring is fixedly connected to the upper surface of the first piston sealing ring.

[0013] Preferably, a plurality of U-shaped rods are fixedly provided on the upper surface of the second piston sealing ring in a circumferential array, and one end of the U-shaped rod away from the second piston sealing ring is fixedly connected to the upper surface of the blocking ring.

[0014] Preferably, the inner wall of the first annular cavity is provided with a plurality of charging and discharging holes in a circular array which are connected with the second annular cavity.

[0015] Preferably, a fixing cylinder is fixedly provided on the inner top wall of the annular installation box located inside the reset spring, and a telescopic column is slidably provided on the inner wall of the fixing cylinder, and the bottom end of the telescopic column is fixedly connected to the upper surface of the sliding ring. Beneficial Effects

[0016] The utility model provides a non-return valve structure for oil filter. Compared with the prior art, it has the following beneficial effects:

[0017] The oil filter one-way valve structure is provided with a check assembly. When the oil is no longer injected, the sliding ring can automatically move upward under the action of the reset spring, so that the upper surface of the connecting ring is pressed against the lower surface of the fixed ring, and the gap between the fixed ring and the sliding ring is sealed under the action of the first sealing ring, thereby effectively avoiding the backflow of the oil inside the oil filter. In addition, the structure is easy to reset and has good sealing performance, which can effectively avoid the occurrence of oil leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0020] Figure 3 For this utility model Figure 2 Enlarged structural diagram at A in the middle.

[0021] Figure 4 It is a schematic diagram of the top-section structure of the annular installation box of the utility model.

[0022] In the figure:

[0023] 100. Machine filter body;

[0024] 200, oil outlet;

[0025] 300, oil inlet;

[0026] 400, non-return assembly; 401, annular mounting box; 402, oil inlet hole; 403, sliding ring; 404, fixing ring; 405, return spring; 406, connecting ring; 407, first sealing ring; 408, second sealing ring; 409, third sealing ring; 4010, fixing cylinder; 4011, telescopic column;

[0027] 500, plugging assembly; 501, mounting ring; 502, first annular cavity; 503, second annular cavity; 504, first piston sealing ring; 505, second piston sealing ring; 506, plugging ring; 507, pressure ring; 508, U-shaped rod; 509, charging and discharging holes. DETAILED DESCRIPTION

[0028] 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 in 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. Example

[0029] See also Figure 1-4 The utility model provides a technical solution: an oil filter one-way valve structure, comprising:

[0030] The oil filter body 100 has an oil outlet 200 and a plurality of oil inlets 300 respectively formed on the top of the oil filter body 100;

[0031] The check assembly 400 is used to prevent the oil inside the oil filter body 100 from flowing back. The check assembly 400 includes an annular mounting box 401 threadedly connected to the top of the oil filter body 100, and the upper surface of the annular mounting box 401 is provided with a plurality of oil inlet holes 402 in a circumferential array, the inner wall of the annular mounting box 401 is slidably provided with a sliding ring 403, and the inner wall of the annular mounting box 401 is fixedly provided with a fixing ring 404 corresponding to the sliding ring 403, and the check assembly 400 also includes a plurality of return springs 405 fixedly provided in a circumferential array on the inner top wall of the annular mounting box 401, and the bottom end of the return spring 405 is fixedly connected to the upper surface of the sliding ring 403;

[0032] A connecting ring 406 is fixedly provided on the outer surface of the sliding ring 403, and a first sealing ring 407 is fixedly provided on the upper surface of the connecting ring 406. A second sealing ring 408 is fixedly provided on the lower surface of the annular installation box 401, which can achieve effective sealing between the bottom of the annular installation box 401 and the top of the oil filter body 100.

[0033] The inner ring surface of the sliding ring 403 is fixedly provided with a third sealing ring 409 , and the inner ring surface of the third sealing ring 409 is slidably connected to the inner wall of the annular installation box 401 , which can achieve effective sealing between the sliding ring 403 and the inner wall of the annular installation box 401 .

[0034] The inner top wall of the annular mounting box 401 is located inside the reset spring 405 and is fixedly provided with a fixed cylinder 4010, and the inner wall of the fixed cylinder 4010 is slidably provided with a telescopic column 4011, and the bottom end of the telescopic column 4011 is fixedly connected to the upper surface of the sliding ring 403, which effectively ensures the stability of the sliding ring 403 when it moves up and down.

[0035] In this embodiment, by providing a check assembly 400, when the engine oil is no longer injected, the sliding ring 403 can automatically move upward under the action of the reset spring 405, so that the upper surface of the connecting ring 406 is pressed against the lower surface of the fixed ring 404, and the gap between the fixed ring 404 and the sliding ring 403 is sealed under the action of the first sealing ring 407, thereby effectively avoiding the backflow of the engine oil inside the oil filter. In addition, the structure is easy to reset and has good sealing performance, which can effectively avoid engine oil leakage. Example

[0036] On the basis of the first embodiment, and different from the first embodiment,

[0037] A machine filter one-way valve structure, further comprising:

[0038] The sealing assembly 500 includes a mounting ring 501 fixed on the inner wall of the annular mounting box 401, and the upper surface of the mounting ring 501 is respectively provided with a first annular cavity 502 and a second annular cavity 503, and the inner walls of the first annular cavity 502 and the second annular cavity 503 are respectively provided with a first piston sealing ring 504 and a second piston sealing ring 505 which are alternately slidably arranged, and the sealing assembly 500 also includes a sealing ring 506 arranged inside the annular mounting box 401 for sealing the oil inlet 300.

[0039] A pressure ring 507 is fixedly disposed on the lower surface of the sliding ring 403 , and the bottom end of the pressure ring 507 is fixedly connected to the upper surface of the first piston sealing ring 504 .

[0040] A plurality of U-shaped rods 508 are fixedly disposed on the upper surface of the second piston sealing ring 505 in a circumferential array, and one end of the U-shaped rod 508 away from the second piston sealing ring 505 is fixedly connected to the upper surface of the blocking ring 506 .

[0041] The inner wall of the first annular cavity 502 is provided with a plurality of charging and discharging holes 509 in a circular array and connected to the second annular cavity 503 .

[0042] In this embodiment, by setting up the sealing assembly 500, when the sliding ring 403 is reset upward under the action of the reset spring 405, it can drive the sealing ring 506 to move downward to block the oil inlet 300, thereby further preventing the oil from flowing back inside the oil filter body 100.

[0043] During operation, the engine oil can enter the interior of the annular installation box 401 through the oil inlet hole 402, and enter the oil filter through the oil inlet port 300. After the engine oil enters the interior of the annular installation box 401, it can drive the sliding ring 403 to move downward. When the sliding ring 403 moves downward, the sliding ring 403 is separated from the fixed ring 404. At this time, the engine oil enters the oil inlet port 300 through the staggered gap between the sliding ring 403 and the fixed ring 404. When the engine oil is no longer injected, the sliding ring 403 can automatically move upward under the action of the reset spring 405, so that the upper surface of the connecting ring 406 is tightly pressed against the lower surface of the fixed ring 404, and the gap between the fixed ring 404 and the sliding ring 403 is sealed under the action of the first sealing ring 407, thereby effectively avoiding the backflow of the engine oil inside the oil filter. In addition, the structure is simple to reset and has good sealing performance, which can effectively avoid the leakage of engine oil. During the downward movement of the ring 403, the pressure ring 507 can be driven to squeeze the first piston sealing ring 504, so that the gas inside the first annular cavity 502 enters the second annular cavity 503 through the filling and discharging holes 509, thereby driving the second piston sealing ring 505 to move upward, so that the second piston sealing ring 505 drives the sealing ring 506 to move upward through the U-shaped rod 508, and opens the oil inlet 300, so that the engine oil can enter the interior of the oil filter body 100. At the same time, when the sliding ring 403 is reset upward under the action of the reset spring 405, it can drive the first piston sealing ring 504 to move upward through the pressure ring 507, and draw the gas in the second annular cavity 503 back to the first annular cavity 502, thereby driving the second piston sealing ring 505 to move downward, and then driving the sealing ring 506 to move downward to block the oil inlet 300, thereby further preventing the engine oil from flowing back into the oil filter body 100.

[0044] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A machine filter one-way valve structure, characterized in that: include: An oil filter body (100), wherein the top of the oil filter body (100) is respectively provided with an oil outlet (200) and a plurality of oil inlets (300); A check assembly (400) for preventing oil from flowing back inside an oil filter body (100), the check assembly (400) comprising an annular mounting box (401) threadedly connected to the top of the oil filter body (100), the upper surface of the annular mounting box (401) being provided with a plurality of oil inlet holes (402) in a circumferential array, the inner wall of the annular mounting box (401) being provided with a sliding ring (403) in a sliding manner, and the inner wall of the annular mounting box (401) being provided with a fixed ring (404) corresponding to the sliding ring (403), the check assembly (400) further comprising a plurality of return springs (405) fixedly arranged in a circumferential array on the inner top wall of the annular mounting box (401), and the bottom end of the return spring (405) being fixedly connected to the upper surface of the sliding ring (403); A plugging assembly (500), the plugging assembly (500) comprising a mounting ring (501) fixedly mounted on the inner wall of an annular mounting box (401), the upper surface of the mounting ring (501) being respectively provided with a first annular cavity (502) and a second annular cavity (503), and the inner walls of the first annular cavity (502) and the second annular cavity (503) being respectively provided with a first piston sealing ring (504) and a second piston sealing ring (505) in an alternating sliding manner, the plugging assembly (500) further comprising a plugging ring (506) arranged inside the annular mounting box (401) for plugging the oil inlet (300).

2. The oil filter one-way valve structure according to claim 1, characterized in that: A connecting ring (406) is fixedly provided on the outer surface of the sliding ring (403), a first sealing ring (407) is fixedly provided on the upper surface of the connecting ring (406), and a second sealing ring (408) is fixedly provided on the lower surface of the annular installation box (401).

3. The oil filter one-way valve structure according to claim 1, characterized in that: A third sealing ring (409) is fixedly arranged on the inner ring surface of the sliding ring (403), and the inner ring surface of the third sealing ring (409) is slidably connected to the inner wall of the annular installation box (401).

4. The oil filter one-way valve structure according to claim 1, characterized in that: A pressure ring (507) is fixedly provided on the lower surface of the sliding ring (403), and the bottom end of the pressure ring (507) is fixedly connected to the upper surface of the first piston sealing ring (504).

5. The oil filter one-way valve structure according to claim 1, characterized in that: A plurality of U-shaped rods (508) are fixedly arranged in a circular array on the upper surface of the second piston sealing ring (505), and one end of the U-shaped rod (508) away from the second piston sealing ring (505) is fixedly connected to the upper surface of the blocking ring (506).

6. The oil filter one-way valve structure according to claim 1, characterized in that: The inner wall of the first annular cavity (502) is provided with a plurality of gas charging and discharging holes (509) in a circular array and connected to the second annular cavity (503).

7. The oil filter one-way valve structure according to claim 1, characterized in that: A fixed cylinder (4010) is fixedly arranged on the inner top wall of the annular installation box (401) located inside the reset spring (405), and a telescopic column (4011) is slidably arranged on the inner wall of the fixed cylinder (4010), wherein the bottom end of the telescopic column (4011) is fixedly connected to the upper surface of the sliding ring (403).

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