Sealing structure of diesel engine oil pipe

Abstract

The invention discloses a sealing structure of a diesel engine oil pipe and relates to the technical field of pipeline connection. The second oil pipe is movably sleeved with the movable sleeve, the second connecting ring is sleeved with the movable sleeve, and the first connecting ring is sleeved with the open end of the movable sleeve in a screwed mode through threads. The first oil pipe is movably sleeved with the fixed sleeve, and the movable sleeve is sleeved with the fixed sleeve. The four pipe sleeves are distributed in the fixed sleeve in a circumferential equiangular mode and arranged in the fixed sleeve in a penetrating mode, and the inner ends of the pipe sleeves are arranged in the movable sleeve in a penetrating mode. Two connected oil pipes can be connected more tightly, air is prevented from entering the oil pipes, and the sealing effect of the oil pipes in use is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline connection, and in particular to a sealing structure of a diesel engine oil pipe. Background Art

[0002] In the low-pressure fuel pipeline of a diesel engine, metal pipes, rubber pipes or nylon pipes are generally used, and the sealing of the connecting parts thereof widely adopts a structure of an articulated pipe joint, a sealing gasket and an articulated bolt; in a sealing structure of a low-pressure fuel metal oil pipe of a diesel engine with patent publication number CN201133524Y, it is disclosed that two oil pipes are connected by the cooperation of a pipe nut and a joint; however, the sealing effect of the cooperation between the pipe nut and the joint is poor, and air is easily introduced, which affects starting. Summary of the invention

[0003] The purpose of the present invention is to address the defects and shortcomings of the prior art and provide a sealing structure for a diesel engine oil pipe that is simple in structure, reasonably designed and easy to use, which can make the connection between two connected oil pipes tighter, prevent air from entering the oil pipe, and enhance the sealing effect of the oil pipe.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: it comprises a No. 1 connecting ring and a No. 2 connecting ring, wherein the No. 1 connecting ring is sleeved and fixed on the right end of the No. 1 oil pipe, and the right side of the No. 1 connecting ring is flush with the right side of the No. 1 oil pipe; a connecting groove is provided on the right side of the No. 1 connecting ring; the No. 2 connecting ring is sleeved and fixed on the left end of the No. 2 oil pipe, and the left side of the No. 2 connecting ring is flush with the left side of the No. 2 oil pipe; the left side of the No. 2 connecting ring is contacted with the right side of the No. 1 connecting ring, and a connecting boss is fixed on the left side of the No. 2 connecting ring, and the connecting boss is inserted into the connecting groove;

[0005] It also contains:

[0006] The movable sleeve is arranged on the No. 2 oil pipe, and the movable sleeve is arranged on the No. 2 connecting ring, and the open end of the movable sleeve is arranged on the No. 1 connecting ring through a threaded connection;

[0007] A fixed sleeve, wherein the fixed sleeve movable sleeve is arranged on the No. 1 oil pipe, and the fixed sleeve is arranged on the movable sleeve;

[0008] The pipe sleeves are four in number and are equiangularly distributed around the circumference and are inserted into the fixed sleeve, and the inner ends of the pipe sleeves are inserted into the movable sleeve;

[0009] Through the above technical solution design, the pipe sleeve connects the movable sleeve with the fixed sleeve, thereby strengthening the stability of the No. 1 oil pipe and the No. 2 oil pipe.

[0010] As a further improvement of the present invention, a No. 1 spacer ring is sleeved and fixed on the No. 1 oil pipe, and the No. 1 spacer ring is fixedly arranged on the left side of the No. 1 connecting ring, and the left side of the No. 1 spacer ring is arranged in contact with the left inner wall of the fixed sleeve; a No. 2 spacer ring is sleeved and fixed on the No. 2 oil pipe, and the No. 2 spacer ring is fixedly arranged on the right side of the No. 2 connecting ring, and the right side of the No. 2 spacer ring is arranged in contact with the right inner wall of the movable sleeve;

[0011] Through the above technical solution design, the movable sleeve and the fixed sleeve are limited.

[0012] As a further improvement of the present invention, a ring groove is provided on the right side of the second spacer ring, and a convex ring is provided on the right inner wall of the movable sleeve, and the convex ring is rotatably arranged in the ring groove;

[0013] Through the above technical solution design, the movable sleeve is limited.

[0014] As a further improvement of the present invention, a sealing ring is sleeved on the connecting boss, and the sealing ring is inserted into the connecting groove;

[0015] Through the above technical solution design, the connection between the second connecting ring and the first connecting ring is strengthened and tightened.

[0016] As a further improvement of the present invention, the outer side of the fixing sleeve is provided with a circular ring, and four connecting protrusions are provided on the inner ring wall of the circular ring at equal angles, the other side of the connecting protrusion is fixed on the outer ring wall of the fixing sleeve, and the connecting protrusion is spaced apart from the pipe sleeve;

[0017] Four truncated cones are arranged and fixed at equal angles in the circular ring, and the axis center lines of the truncated cones and the axis center lines of the pipe sleeve are arranged on the same axis center line; a rotating shaft is arranged inside the truncated cones through a bearing rotation connection, a threaded rod is fixed on the inner end of the rotating shaft, the pipe sleeve is sleeved on the threaded rod through a thread rotation connection, and the outer end of the pipe sleeve is slidably connected to the truncated cone through a sliding pair;

[0018] A rotating table is sleeved and fixed on the outer end of the rotating shaft, and a plurality of tightening grooves are provided on the outer end ring wall of the rotating table at equal rounded angles. A positioning ring is sleeved on the outer side of the rotating table, and the inserting end of the positioning ring is inserted into the positioning groove provided in the circular table, and a plurality of tightening tables are fixed on the inner circumference of the positioning ring at equal angles, and the tightening tables are inserted into the tightening grooves.

[0019] Through the above technical solution design, the pipe sleeve is driven and limited.

[0020] As a further improvement of the present invention, a sealing sleeve is sleeved on the insertion end of the positioning ring, and the sealing sleeve is tightly inserted into the positioning groove;

[0021] Through the above technical solution design, the fixation of the positioning ring is strengthened.

[0022] As a further improvement of the present invention, the outer end of the rotating table is provided with a threaded cover through a threaded screw-on sleeve, and the open end of the threaded cover abuts against the positioning ring;

[0023] Through the above technical solution design, the stability of the positioning ring is strengthened.

[0024] The working principle of the present invention is as follows: when the No. 1 oil pipe and the No. 2 oil pipe are connected, the No. 1 connecting ring contacts the No. 2 connecting ring, and the connecting boss is inserted tightly into the No. 1 connecting ring; then, the movable sleeve is moved and rotated first, so that the movable sleeve is screwed on the No. 1 connecting ring while pressing against the No. 2 spacer ring, thereby strengthening the connection between the No. 1 connecting ring and the No. 2 connecting ring, thereby strengthening the tight connection between the No. 1 oil pipe and the No. 2 oil pipe; then the fixed sleeve is moved until it is pressed against the No. 1 spacer ring and tightly sleeved on the movable sleeve; the rotating table is manually rotated to rotate the threaded rod and drive the pipe sleeve to move, until the pipe sleeve passes through the fixed sleeve and is inserted into the movable sleeve, so that the movable sleeve and the fixed sleeve are tightly connected; the positioning ring is sleeved on the rotating table from the outside to the inside, until the insertion end of the positioning ring is inserted into the round table, the insertion table is inserted into the insertion groove, and the threaded cover is tightened on the rotating table to press the positioning ring.

[0025] After adopting the above structure, the beneficial effects of the present invention are:

[0026] 1. Through the cooperation of the fixed sleeve and the movable sleeve, the connection between the No. 1 connecting ring and the No. 2 connecting ring is strengthened, so that the connection between the No. 1 oil pipe and the No. 2 oil pipe is tighter;

[0027] 2. The movement of the pipe sleeve makes the fixed sleeve and the movable sleeve tighter, thereby further strengthening the tightness between the No. 1 oil pipe and the No. 2 oil pipe;

[0028] 3. The threaded cover presses against the positioning ring to limit the rotating table and position the pipe sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a structural schematic diagram of the present invention.

[0031] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0032] Figure 3 yes Figure 2 Enlarged view of part A.

[0033] Figure 4 yes Figure 2 Enlarged view of part B.

[0034] Figure 5 It is a structural schematic diagram of the connection of a fixed sleeve, a movable sleeve, a No. 1 spacer ring and a No. 2 spacer ring in the present invention.

[0035] Figure 6 It is a structural schematic diagram of the rotating table and the positioning ring in the present invention.

[0036] Description of reference numerals:

[0037] No. 1 connecting ring 1, connecting groove 1-1, No. 2 connecting ring 2, No. 1 oil pipe 3, No. 2 oil pipe 4, connecting boss 5, movable sleeve 6, fixed sleeve 7, pipe sleeve 8, No. 1 spacer ring 9, No. 2 spacer ring 10, ring groove 10-1, convex ring 11, sealing ring 12, circular ring 13, connecting boss 14, round table 15, positioning groove 15-1, rotating shaft 16, threaded rod 17, rotating table 18, tightening groove 18-1, positioning ring 19, tightening table 20, sealing sleeve 21, threaded cover 22. DETAILED DESCRIPTION

[0038] The present invention will be further described below in conjunction with the accompanying drawings.

[0039] Embodiment 1:

[0040] See also Figure 1-Figure 6 , this embodiment comprises a No. 1 connecting ring 1 and a No. 2 connecting ring 2. The No. 1 connecting ring 1 is sleeved and fixed on the right end of the No. 1 oil pipe 3, and the right side of the No. 1 connecting ring 1 is flush with the right side of the No. 1 oil pipe 3; a connecting groove 1-1 is provided on the right side of the No. 1 connecting ring 1; the No. 2 connecting ring 2 is sleeved and fixed on the left end of the No. 2 oil pipe 4, and the left side of the No. 2 connecting ring 2 is flush with the left side of the No. 2 oil pipe 4; the left side of the No. 2 connecting ring 2 is in contact with the right side of the No. 1 connecting ring 1, and a connecting boss 5 is fixed on the left side of the No. 2 connecting ring 2, and the connecting boss 5 is inserted into the connecting groove 1-1; a sealing ring 12 is sleeved on the connecting boss 5, and the sealing ring 12 is inserted into the connecting groove 1-1;

[0041] It also contains:

[0042] The movable sleeve 6 is arranged on the No. 2 oil pipe 4, and the movable sleeve 6 is sleeved on the No. 2 connecting ring 2, and the open end of the movable sleeve 6 is sleeved on the No. 1 connecting ring 1 through a threaded connection;

[0043] A fixed sleeve 7, wherein the fixed sleeve 7 and the movable sleeve 6 are arranged on the No. 1 oil pipe 3, and the fixed sleeve 7 is sleeved on the movable sleeve 6;

[0044] A No. 1 spacer ring 9 is sleeved and fixed on the No. 1 oil pipe 3, and the No. 1 spacer ring 9 is fixedly arranged on the left side of the No. 1 connecting ring 1, and the left side of the No. 1 spacer ring 9 is arranged in contact with the left inner wall of the fixed sleeve 7; a No. 2 spacer ring 10 is sleeved and fixed on the No. 2 oil pipe 4, and the No. 2 spacer ring 10 is fixedly arranged on the right side of the No. 2 connecting ring 2, and the right side of the No. 2 spacer ring 10 is arranged in contact with the right inner wall of the movable sleeve 6; a ring groove 10-1 is opened on the right side of the No. 2 spacer ring 10, and a convex ring 11 is arranged on the right inner wall of the movable sleeve 6, and the convex ring 11 is rotatably arranged in the ring groove 10-1;

[0045] The pipe sleeves 8 are four in number and are equiangularly distributed around the circumference and penetrated in the fixed sleeve 7, and the inner ends of the pipe sleeves 8 are penetrated in the movable sleeve 6;

[0046] With the above design, the pipe sleeve 8 connects the movable sleeve 6 with the fixed sleeve 7 , thereby strengthening the stability of the No. 1 oil pipe 3 and the No. 2 oil pipe 4 .

[0047] Embodiment 2:

[0048] See also Figure 1-Figure 6 , further improved on the basis of Example 1, the outer side of the fixing sleeve 7 is provided with a circular ring 13, and four connecting protrusions 14 are provided on the inner ring wall of the circular ring 13 at equal angles, the other side of the connecting protrusion 14 is fixed on the outer ring wall of the fixing sleeve 7, and the connecting protrusion 14 is spaced apart from the pipe sleeve 8;

[0049] Four truncated cones 15 are equiangularly distributed and fixed in the circular ring 13, and the axis of the truncated cone 15 is arranged on the same axis as the axis of the pipe sleeve 8; a rotating shaft 16 is screwed through the inside of the truncated cone 15 through a bearing, a threaded rod 17 is fixed to the inner end of the rotating shaft 16, the pipe sleeve 8 is screwed on the threaded rod 17 through a threaded connection, and the outer end of the pipe sleeve 8 is slidably connected to the truncated cone 15 through a sliding pair;

[0050] A rotating table 18 is sleeved and fixed on the outer end of the rotating shaft 16. A plurality of tightening grooves 18-1 are formed on the outer end of the rotating table 18 at equal rounded angles. A positioning ring 19 is sleeved on the outer side of the rotating table 18. The insertion end of the positioning ring 19 is inserted into the positioning groove 15-1 formed in the round table 15. A plurality of tightening tables 20 are fixed at equal angles on the inner circumference of the positioning ring 19. The tightening tables 20 are inserted into the tightening groove 18-1. A sealing sleeve 21 is sleeved on the insertion end of the positioning ring 19, and the sealing sleeve 21 is tightly inserted into the positioning groove 15-1. A threaded cover 22 is sleeved on the outer end of the rotating table 18 through a threaded connection, and the open end of the threaded cover 22 abuts against the positioning ring 19.

[0051] The above design scheme is adopted to drive and limit the pipe sleeve 8.

[0052] When the No. 1 oil pipe 3 and the No. 2 oil pipe 4 are connected, the No. 1 connecting ring 1 and the No. 2 connecting ring 2 are in conflict with each other, and the connecting boss 5 is inserted tightly into the No. 1 connecting ring 1; then, the movable sleeve 6 is moved and rotated first, so that the movable sleeve 6 is screwed on the No. 1 connecting ring 1 while pressing against the No. 2 spacer ring 10, so as to strengthen the connection between the No. 1 connecting ring 1 and the No. 2 connecting ring 2, thereby strengthening the connection between the No. 1 oil pipe 3 and the No. 2 oil pipe 4; then the fixed sleeve 7 is moved until it is pressed against the No. 1 spacer ring 9. , it is also tightly sleeved on the movable sleeve 6; manually rotate the rotating table 18 to rotate the threaded rod 17 and drive the pipe sleeve 8 to move, until the pipe sleeve 8 passes through the fixed sleeve 7 and is inserted tightly into the movable sleeve 6, so that the movable sleeve 6 and the fixed sleeve 7 are tightly connected; put the positioning ring 19 on the rotating table 18 from the outside to the inside, until the insertion end of the positioning ring 19 is inserted into the round table 15, the tightening table 20 is inserted into the tightening groove 18-1, and the threaded cover 22 is tightened on the rotating table 18 to tighten the positioning ring 19.

[0053] After adopting the above structure, the beneficial effects of the present invention are:

[0054] 1. Through the cooperation of the fixed sleeve 7 and the movable sleeve 6, the connection between the No. 1 connecting ring 1 and the No. 2 connecting ring 2 is strengthened, so that the connection between the No. 1 oil pipe 3 and the No. 2 oil pipe 4 is more tightly connected;

[0055] 2. The movement of the pipe sleeve 8 makes the fixed sleeve 7 and the movable sleeve 6 tighter, thereby further strengthening the tightness between the No. 1 oil pipe 3 and the No. 2 oil pipe 4;

[0056] 3. The threaded cover 22 is pressed against the positioning ring 19 to limit the rotating platform 18 so that the pipe sleeve 8 is positioned.

[0057] The above description is only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A sealing structure for a diesel engine oil pipe, comprising a first connecting ring (1) and a second connecting ring (2), wherein the first connecting ring (1) is sleeved and fixed on the right end of the first oil pipe (3), and the right side of the first connecting ring (1) is flush with the right side of the first oil pipe (3); a connecting groove (1-1) is provided on the right side of the first connecting ring (1); the second connecting ring (2) is sleeved and fixed on the left end of the second oil pipe (4), and the left side of the second connecting ring (2) is flush with the left side of the second oil pipe (4); the left side of the second connecting ring (2) is in contact with the right side of the first connecting ring (1), and a connecting boss (5) is fixed on the left side of the second connecting ring (2), and the connecting boss (5) is inserted into the connecting groove (1-1); It is characterized in that It also contains: A movable sleeve (6), wherein the movable sleeve (6) is arranged on the No. 2 oil pipe (4), and the movable sleeve (6) is sleeved on the No. 2 connecting ring (2), and the open end of the movable sleeve (6) is sleeved on the No. 1 connecting ring (1) through a threaded connection; A fixed sleeve (7), wherein the fixed sleeve (7) and the movable sleeve (6) are arranged on the first oil pipe (3), and the fixed sleeve (7) is sleeved on the movable sleeve (6); The pipe sleeves (8) are four in number and are equiangularly distributed around the circumference and penetrated into the fixed sleeve (7), and the inner ends of the pipe sleeves (8) are penetrated into the movable sleeve (6).

2. The sealing structure of a diesel engine oil pipe according to claim 1, characterized in that: A No. 1 spacer ring (9) is sleeved and fixed on the No. 1 oil pipe (3), and the No. 1 spacer ring (9) is fixedly arranged on the left side of the No. 1 connecting ring (1), and the left side of the No. 1 spacer ring (9) is in contact with the left inner wall of the fixed sleeve (7); a No. 2 spacer ring (10) is sleeved and fixed on the No. 2 oil pipe (4), and the No. 2 spacer ring (10) is fixedly arranged on the right side of the No. 2 connecting ring (2), and the right side of the No. 2 spacer ring (10) is in contact with the right inner wall of the movable sleeve (6).

3. The sealing structure of a diesel engine oil pipe according to claim 2, characterized in that: The right side of the second spacer ring (10) is provided with an annular groove (10-1), and the right inner wall of the movable sleeve (6) is provided with a convex ring (11), which is rotatably arranged in the annular groove (10-1).

4. The sealing structure of a diesel engine oil pipe according to claim 1, characterized in that: The connection boss (5) is sleeved with a sealing ring (12), and the sealing ring (12) is inserted into the connection groove (1-1).

5. The sealing structure of a diesel engine oil pipe according to claim 1, characterized in that: The outer side of the fixing sleeve (7) is provided with a circular ring (13), and the inner ring wall of the circular ring (13) is provided with four connecting protrusions (14) equiangularly distributed around the circumference, the other side of the connecting protrusion (14) is fixed to the outer ring wall of the fixing sleeve (7), and the connecting protrusion (14) and the pipe sleeve (8) are arranged at intervals; Four truncated cones (15) are arranged and fixed at equal angles in the circular ring (13), and the axis center lines of the truncated cones (15) and the axis center line of the pipe sleeve (8) are arranged on the same axis center line; a rotating shaft (16) is arranged in the interior of the truncated cone (15) through a bearing rotation connection, a threaded rod (17) is fixed to the inner end of the rotating shaft (16), the pipe sleeve (8) is threadedly sleeved on the threaded rod (17), and the outer end of the pipe sleeve (8) is slidably connected to the truncated cone (15) through a sliding pair; A rotating table (18) is sleeved and fixed on the outer end of the rotating shaft (16); a plurality of tightening grooves (18-1) are arranged on the outer end ring wall of the rotating table (18) at equal rounded angles; a positioning ring (19) is sleeved on the outer side of the rotating table (18); the inserting end of the positioning ring (19) is inserted into the positioning groove (15-1) provided in the circular table (15); and a plurality of tightening tables (20) are fixed at equal angles on the inner circumference of the positioning ring (19); the tightening tables (20) are inserted into the tightening grooves (18-1).

6. A sealing structure for a diesel engine oil pipe according to claim 5, characterized in that: A sealing sleeve (21) is sleeved on the insertion end of the positioning ring (19), and the sealing sleeve (21) is tightly inserted into the positioning groove (15-1).

7. A sealing structure for a diesel engine oil pipe according to claim 6, characterized in that: The outer end of the rotating platform (18) is provided with a threaded cover (22) through a threaded connection, and the open end of the threaded cover (22) abuts against the positioning ring (19).

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