Sealing mechanism of oil duct leakage tester

Abstract

The utility model discloses a sealing mechanism of an oil duct leakage testing machine, and relates to the technical field of oil duct leakage testing detection. Comprising an air inlet pipe, a first inflation pipe and a flow dividing pipe are installed on the air inlet pipe, the bottom end of the flow dividing pipe is connected with a plurality of second inflation pipes which are evenly distributed, the tail ends of the second inflation pipes are connected with a sealing assembly, the sealing assembly comprises a fixing base, a positioning pipe and a plugging mechanism, and the positioning pipe is arranged at the center of the fixing base; the plugging mechanism comprises a sealing ring, a first sealing air bag and a second sealing air bag, a magnetic attraction fixing structure is installed on the top of the fixing base and located on the outer side of the positioning pipe, a first hose is arranged at the bottom of the positioning pipe, and a first installation sleeve and a second installation sleeve are sequentially connected to the first hose. The sealing device can be flexibly used, multiple sealing is carried out on the boss on the periphery of the oil duct and the interior of the oil duct at the same time, the influence of pressure or temperature changes on the sealing effect is reduced, and the sealing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil passage leak detection, in particular to a sealing mechanism of an oil passage leak detector. Background Technique

[0002] An oil passage leak detector is a device used to detect the leakage state of the oil passage of an engine cylinder block. When the oil passage leak detector performs a leak detection on the oil passage, in order to ensure the detection accuracy, a sealing structure is required to block the oil passage.

[0003] In the prior art, a sealing mechanism of an oil passage leak detector with the publication number of CN214173645U includes a cylinder, a base, an oil passage plugging sleeve, an oil passage sealant, and a cover plate. One end of the base is connected to the telescopic rod of the cylinder. The oil passage plugging sleeve is installed on the base. The oil passage sealant is accommodated in the oil passage plugging sleeve. The cover plate is installed on the oil passage plugging sleeve. An inflation hole is opened on the oil passage plugging sleeve. In this scheme, the cylinder drives the oil passage sealant to wrap around the outer edge of the boss of the oil passage, and the inflation device inflates the oil passage sealant through the inflation hole, so that the oil passage sealant tightly hugs the boss to form a seal and avoid air leakage.

[0004] However, there are still some deficiencies in the above scheme. For example, the above sealing structure can only seal the outer edge of the boss of the oil passage and cannot be carried out inside the oil passage. When the pressure or temperature borne by the oil passage sealant changes, it is easy to affect its sealing effect. In addition, driving the oil passage sealant by the cylinder for sealing only has a good sealing effect in the vertical direction and is not convenient for sealing some inclined oil passages. In view of this, the utility model provides a sealing mechanism of an oil passage leak detector. Content of the Utility Model

[0005] The purpose of the utility model is to provide a sealing mechanism of an oil passage leak detector to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: A sealing mechanism of an oil passage leak detector includes an air inlet pipe, a first inflation pipe and a shunt pipe are installed on the air inlet pipe. The bottom end of the shunt pipe is connected with a number of uniformly distributed second inflation pipes. The end of the second inflation pipe is connected with a sealing component. The sealing component includes a fixed seat, a positioning pipe and a plugging mechanism. The positioning pipe is arranged at the center of the fixed seat. The plugging mechanism includes a sealing ring, a first sealing airbag and a second sealing airbag. A magnetic fixing structure is installed on the top of the fixed seat and outside the positioning pipe. A first hose is arranged at the bottom of the positioning pipe. A first mounting sleeve and a second mounting sleeve are sequentially connected on the first hose.

[0007] Preferably, a first control valve is installed on the intake pipe near the first charging pipe. The end of the first charging pipe is threadedly connected to the top of the positioning pipe. A second control valve is installed on the intake pipe near the shunt pipe.

[0008] Furthermore, an installation ring is provided at the top of the fixed seat near the center. The outer wall of the installation ring is provided with positioning edges distributed in an annular array.

[0009] Preferably, the magnetic attraction fixing structure includes a magnetic attraction ring. The magnetic attraction ring is snap-fitted and fixed to the installation ring. A protective cover is snap-fitted and fixed to the outside of the magnetic attraction ring.

[0010] Furthermore, a buffer pad is adhesively fixed to the bottom of the fixed seat outside the positioning pipe. A number of uniformly distributed annular grooves are provided at the bottom of the buffer pad.

[0011] Preferably, the positioning pipe, the first installation sleeve, and the second installation sleeve are connected and communicated through a first hose. A sealing plug is threadedly connected to the top of the positioning pipe.

[0012] Furthermore, the sealing ring is arranged outside the buffer pad and is provided with the bottom of the fixed seat. The first sealing airbag is arranged outside the first installation sleeve. The second sealing airbag is arranged outside the second installation sleeve. Fixed sleeves are fixedly provided inside the first installation sleeve and the second sealing airbag.

[0013] Preferably, the sealing ring, the first sealing airbag, and the second sealing airbag are connected and communicated through a second hose. The second hose sequentially penetrates through the positioning pipe and the fixed seat and is threadedly connected to the end of the second charging pipe.

[0014] Furthermore, a guiding head is welded and fixed to the outside of the second installation sleeve at the bottom of the second sealing airbag. A number of uniformly distributed balls are embedded in the guiding head.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] An oil passage leak test machine sealing mechanism, by providing a fixed seat, a positioning pipe, and a plugging mechanism, the sealing ring plays a sealing role on the convex platform outside the oil passage, and the first sealing airbag and the second sealing airbag perform sealing inside the oil passage, so as to achieve multiple seals simultaneously on the convex platform outside the oil passage and inside the oil passage, reduce the influence of pressure or temperature changes on the sealing effect, and improve the sealing effect.

[0017] At the same time, the fixed seat can be freely fixed through the magnetic attraction fixing structure, so that the sealing mechanism can be used flexibly, facilitating the sealing of oil passages at different positions, and further facilitating the detection by the oil passage leak test machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a schematic diagram of the intake pipe structure of the present utility model;

[0020] Figure 3 is a cross-sectional view of the seal assembly structure of the present utility model;

[0021] Figure 4 is a schematic diagram of the fixed seat structure of the present utility model;

[0022] Figure 5 is a schematic diagram of the positioning pipe structure of the present utility model;

[0023] Figure 6 is a schematic diagram of the plugging mechanism structure of the present utility model.

[0024] In the figure: 1. Intake pipe; 11. First control valve; 12. First charging pipe; 13. Second control valve; 14. Shunt pipe; 15. Second charging pipe; 2. Fixed seat; 21. Installation ring; 22. Positioning rib; 23. Magnetic attraction ring; 24. Protective cover; 25. Buffer pad; 26. Sealing ring; 3. Positioning pipe; 31. First hose; 32. First installation sleeve; 33. Second installation sleeve; 34. Sealing plug; 4. Fixed sleeve; 41. First sealing airbag; 42. Second sealing airbag; 43. Second hose; 5. Guide head; 51. Ball. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] The oil passage leak tester is a device used to detect the leakage state of the engine block oil passage. When the oil passage leak tester performs a leak test on the oil passage, in order to ensure the detection accuracy, a sealing structure is required to plug the oil passage. However, the existing sealing structure usually seals on the boss outside the oil passage and cannot adapt to the shape of the oil passage and seal inside the oil passage, resulting in a poor sealing effect. The sealing mechanism provided by the present utility model can seal both on the boss outside the oil passage and inside the oil passage to improve the sealing effect. During the sealing process, it is necessary to connect the intake pipe with the inflation device of the oil passage leak tester in advance so as to facilitate the delivery of air to the plugging mechanism, thereby ensuring the sealing effect on the oil passage.

[0027] Such asFigures 1 - 6 As shown in the figure, the utility model provides a technical solution: a sealing mechanism for an oil passage leak tester, which includes an air inlet pipe 1. A first charging pipe 12 and a shunt pipe 14 are installed on the air inlet pipe 1. A plurality of uniformly distributed second charging pipes 15 are connected to the bottom end of the shunt pipe 14. The end of the second charging pipe 15 is connected to a sealing assembly. The sealing assembly includes a fixed seat 2, a positioning pipe 3 and a plugging mechanism. The positioning pipe 3 is arranged at the center of the fixed seat 2. The plugging mechanism includes a sealing ring 26, a first sealing airbag 41 and a second sealing airbag 42. A magnetic fixing structure is installed on the top of the fixed seat 2 and outside the positioning pipe 3. A first hose 31 is arranged at the bottom of the positioning pipe 3. A first mounting sleeve 32 and a second mounting sleeve 33 are sequentially connected to the first hose 31.

[0028] When sealing, first move the first sealing airbag 41 and the second sealing airbag 42 to the inside of the oil pipe. The first mounting sleeve 32 and the second mounting sleeve 33 respectively support and guide the first sealing airbag 41 and the second sealing airbag 42, which is convenient for adjusting the positions of the first sealing airbag 41 and the second sealing airbag 42. Then, move the fixed seat 2 close to the boss on the periphery of the oil passage, and magnetically fix the fixed seat 2 to the engine cylinder block through the magnetic fixing structure. Then, convey air to the plugging mechanism through the second charging pipe 15. Through the mutual cooperation of the sealing ring 26, the first sealing airbag 41 and the second sealing airbag 42, multiple seals of the oil passage can be realized, effectively enhancing the sealing effect of the oil passage.

[0029] As Figure 2 shown in the figure, a first control valve 11 is installed on the air inlet pipe 1 and close to the first charging pipe 12. The end of the first charging pipe 12 is threadedly connected to the top of the positioning pipe 3. A second control valve 13 is installed on the air inlet pipe 1 and close to the shunt pipe 14.

[0030] After the sealing ring 26, the first sealing airbag 41 and the second sealing airbag 42 are sealed, close the second control valve 13 to prevent the gas inside the plugging mechanism from leaking, and ensure its sealing effect. Then, threadedly connect the end of the first charging pipe 12 to the positioning pipe 3. After opening the first control valve 11, through the mutual cooperation of the first charging pipe 12, the positioning pipe 3, the first hose 31, the first mounting sleeve 32 and the second mounting sleeve 33, gas can be continuously conveyed into the cylinder block for leak detection.

[0031] As Figure 3 and Figure 4 shown in the figure, an installation ring 21 is arranged at the top of the fixed seat 2 and close to the center. The outer wall of the installation ring 21 is provided with positioning edges 22 distributed in a circular array.

[0032] The magnetic fixing structure includes a magnetic ring 23. The magnetic ring 23 is clamped and fixed to the mounting ring 21. A positioning groove corresponding to the positioning edge 22 is provided on the inner wall of the magnetic ring 23. The magnetic ring 23 can be positioned through the mutual cooperation of the positioning edge 22 and the positioning groove. A protective cover 24 is clamped and fixed to the outside of the magnetic ring 23. The protective cover 24 plays a protective role on the outside of the magnetic ring 23. The magnetic ring 23 can be magnetically fixed to the engine cylinder block, so as to fix the fixing seat 2 at the oil passage interface.

[0033] A buffer pad 25 is adhesively fixed to the bottom of the fixing seat 2 and located outside the positioning pipe 3. A plurality of uniformly distributed annular grooves are provided at the bottom of the buffer pad 25. The buffer pad 25 plays a buffering effect between the fixing seat 2 and the engine cylinder block, and under the action of a plurality of annular grooves, the sealing effect between the fixing seat 2 and the oil pipe interface can be enhanced.

[0034] Such as Figure 5 And Figure 6 As shown, the positioning pipe 3, the first mounting sleeve 32 and the second mounting sleeve 33 are connected and communicated through a first hose 31. A sealing plug 34 is threadedly connected to the top of the positioning pipe 3. The sealing plug 34 can be sealed inside the positioning pipe 3 to seal the positioning pipe 3 not connected to the first charging pipe 12, so as to facilitate leak detection.

[0035] A sealing ring 26 is arranged outside the buffer pad 25 and is provided at the bottom of the fixing seat 2. The sealing ring 26 plays a sealing role on the boss around the oil passage to prevent gas from passing through the connection between the fixing seat 2 and the oil passage interface. A first sealing airbag 41 is arranged outside the first mounting sleeve 32, and a second sealing airbag 42 is arranged outside the second mounting sleeve 33. Fixing sleeves 4 are fixedly provided inside the first mounting sleeve 32 and the second sealing airbag 42. The fixing sleeves 4 play a lining role inside the first sealing airbag 41 and the second sealing airbag 42 to prevent the first sealing airbag 41 and the second sealing airbag 42 from being excessively deformed. Through the mutual cooperation of the first sealing airbag 41 and the second sealing airbag 42, multiple seals can be performed inside the oil passage to improve the sealing effect of the oil passage.

[0036] A second hose 43 is connected and communicated between the sealing ring 26, the first sealing airbag 41 and the second sealing airbag 42. The second hose 43 sequentially penetrates through the positioning pipe 3 and the fixing seat 2 and is threadedly connected to the end of the second charging pipe 15, so as to convey gas to the sealing ring 26, the first sealing airbag 41 and the second sealing airbag 42 for sealing.

[0037] On the outer side of the second mounting sleeve 33 and at the bottom of the second sealing airbag 42, a guiding head 5 is fixedly welded. A number of evenly distributed ball bearings 51 are embedded in the guiding head 5. After the second mounting sleeve 33 enters the oil passage, through the mutual cooperation of the guiding head 5 and the ball bearings 51, a guiding effect can be achieved at the end of the second mounting sleeve 33, so as to facilitate the movement of the first sealing airbag 41 and the second sealing airbag 42 inside the oil passage.

[0038] Working principle: First, move the second mounting sleeve 33 into the oil passage. Guide the second mounting sleeve 33 through the mutual cooperation of the guiding head 5 and the ball bearings 51, and move the first sealing airbag 41 and the second sealing airbag 42 to the inner side of the oil passage in sequence. Then, move the fixing seat 2 close to the oil passage interface, and magnetically fix the magnetic attraction ring 23 to the engine cylinder block, so as to install and fix the fixing seat 2. After installing a plurality of fixing seats 2 and the plugging mechanism at the oil passage in sequence, connect one of the positioning pipes 3 to the first air charging pipe 12, and seal the remaining positioning pipes 3 with the sealing plugs 34.

[0039] Furthermore, continuously supply air into the second air charging pipe 15 through the air inlet pipe 1, so that the air enters the sealing ring 26, the first sealing airbag 41 and the second sealing airbag 42 through the second hose 43, so that the sealing ring 26 seals between the outer peripheral boss of the oil passage and the fixing seat 2, and the first sealing airbag 41 and the second sealing airbag 42 seal inside the oil passage, so as to achieve multiple seals. Then, close the second control valve 13 to prevent the gas in the plugging mechanism from leaking. After that, convey air into the positioning pipe 3 through the first air charging pipe 12, and continuously inject the air into the cylinder block, so as to facilitate the leak detection machine to perform leak detection.

[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended embodiments and their equivalents.

Claims

1. A sealing mechanism for an oil channel leak tester, comprising an air intake pipe (1), characterized in that: The air inlet pipe (1) is provided with a first air filling pipe (12) and a shunt pipe (14); the bottom end of the shunt pipe (14) is connected to a plurality of evenly distributed second air filling pipes (15); the ends of the second air filling pipes (15) are connected to a sealing assembly; the sealing assembly comprises a fixing seat (2), a positioning pipe (3) and a sealing mechanism; the positioning pipe (3) is arranged at the center of the fixing seat (2); the sealing mechanism comprises a sealing ring (26), a first sealing airbag (41) and a second sealing airbag (42); a magnetic fixing structure is installed at the top of the fixing seat (2) and on the outside of the positioning pipe (3); a first hose (31) is provided at the bottom of the positioning pipe (3); a first mounting sleeve (32) and a second mounting sleeve (33) are sequentially connected to the first hose (31).

2. The sealing mechanism of the oil channel leak tester according to claim 1, characterized in that: A first control valve (11) is installed on the air intake pipe (1) near the first air charging pipe (12); the end of the first air charging pipe (12) is threadedly connected to the top of the positioning pipe (3); and a second control valve (13) is installed on the air intake pipe (1) near the diverter pipe (14).

3. The sealing mechanism of the oil channel leak tester according to claim 1, characterized in that: A mounting ring (21) is provided at the top of the fixing seat (2) and near the center, and the outer wall of the mounting ring (21) is provided with positioning ridges (22) distributed in a ring array.

4. The sealing mechanism of the oil channel leak tester according to claim 1, characterized in that: The magnetic attraction fixing structure comprises a magnetic attraction ring (23), the magnetic attraction ring (23) is clamped and fixed to the mounting ring (21), and a protective cover (24) is clamped and fixed to the outer side of the magnetic attraction ring (23).

5. The sealing mechanism of the oil channel leak tester according to claim 1, characterized in that: A buffer pad (25) is bonded and fixed at the bottom of the fixing seat (2) and located outside the positioning tube (3), and a plurality of evenly distributed annular grooves are provided at the bottom of the buffer pad (25).

6. The sealing mechanism of the oil channel leak tester according to claim 1, characterized in that: The positioning tube (3), the first installation sleeve (32) and the second installation sleeve (33) are connected via a first hose (31), and a sealing plug (34) is threadedly connected to the top of the positioning tube (3).

7. The sealing mechanism of the oil channel leak tester according to claim 1, characterized in that: The sealing ring (26) is arranged on the outside of the buffer pad (25) and is arranged at the bottom of the fixing seat (2); the first sealing airbag (41) is arranged on the outside of the first mounting sleeve (32); the second sealing airbag (42) is arranged on the outside of the second mounting sleeve (33); and the fixing sleeve (4) is fixedly provided on the inner sides of the first mounting sleeve (32) and the second sealing airbag (42).

8. The sealing mechanism of the oil channel leak tester according to claim 7, characterized in that: A second hose (43) is provided between the sealing ring (26), the first sealing airbag (41) and the second sealing airbag (42) to communicate with each other. The second hose (43) passes through the positioning tube (3) and the fixing seat (2) in sequence and is threadedly connected to the end of the second inflation tube (15).

9. The sealing mechanism of the oil channel leak tester according to claim 1, characterized in that: A guide head (5) is welded and fixed on the outside of the second mounting sleeve (33) and at the bottom of the second sealing airbag (42), and a plurality of evenly distributed balls (51) are embedded in the guide head (5).

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