Crankcase ventilation pipeline structure

Abstract

The utility model discloses a crankcase ventilation pipeline structure, and relates to the technical field of crankcase ventilation pipelines. The connecting pipe comprises a connecting pipe main body, wherein connecting devices are arranged on the two sides of the connecting pipe main body; the connecting device comprises a threaded barrel, a limiting piece is arranged in the threaded barrel, limiting blocks in running fit are symmetrically arranged in the limiting piece, the surface of the threaded barrel is sleeved with a sliding barrel, a sliding groove is formed in the surface of the sliding barrel, a containing groove is formed in one end of the surface of the sliding barrel, and the surface of the containing groove is sleeved with a sealing gasket. A fixing groove is formed in the surface of the containing groove. The threaded cylinder is in threaded connection with the connecting pipe body. A worker rotates the threaded barrel to enable the threaded barrel and the sealing gasket to be staggered, the sliding barrel is pulled to move on the surface of the threaded barrel, the sliding barrel drives the aged sealing gasket to move out of the interior of the fixing block, and therefore the worker can conveniently replace the aged sealing gasket and conveniently operate the aged sealing gasket, and the efficiency of replacing the sealing gasket is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of crankcase ventilation pipelines, and in particular relates to a crankcase ventilation pipeline structure. Background Art

[0002] To ensure the power of the engine, the degree of strengthening of the engine is getting higher and higher, and the tendency of engine pre-ignition increases accordingly. According to research, engine pre-ignition is mainly caused by the oil entering the combustion chamber, and the crankcase ventilation pipe is one of the ways for the oil to enter the combustion chamber. The main function of the crankcase ventilation pipe is to connect the crankcase with the intake pipe or intake manifold, so that the crankcase can be supplemented with fresh air and the crankcase exhaust gas can enter the combustion chamber through the crankcase ventilation pipe to participate in combustion and then be discharged.

[0003] The joints of existing ventilation ducts are mostly sealed by gaskets made of soft materials. When used for a long time, the gaskets will age and reduce their sealing effect due to the high temperature of the gas output by the engine. Since the gaskets are inside the joints, it is inconvenient for staff to replace the gaskets.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art, provide a crankcase ventilation pipeline structure, and solve the technical problems in the prior art that the sealing gasket will age after long-term use and it is inconvenient to replace the sealing gasket.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0007] The crankcase ventilation pipeline structure comprises: a connecting pipe body, and connecting devices are installed on both sides of the connecting pipe body;

[0008] The connection device comprises a threaded barrel, a limiter is provided inside the threaded barrel, a limiter block for rotational cooperation is symmetrically provided inside the limiter, a sliding barrel is sleeved on the surface of the threaded barrel, a sliding groove is provided on the surface of the sliding barrel, a placement groove is provided on one end of the surface of the sliding barrel, a sealing gasket is sleeved on the surface of the placement groove, a fixing groove is provided on the surface of the placement groove, a bolt is matched with the internal thread of the fixing groove, a clamping barrel is provided on the other end of the sealing gasket, and a clamping groove is provided on the surface of the clamping barrel. The threaded barrel is threadedly connected to the connecting pipe body.

[0009] Optionally, a fixed block is slidably matched on the surface of the cartridge, a spring pin is provided on the surface of the fixed block, and the spring pin and the card slot are engaged with each other.

[0010] Optionally, the sealing gasket is fixed by bolts cooperating with the fixing groove.

[0011] Optionally, the threaded barrel is provided with threads at the placement groove position, and a threaded groove is provided inside the fixing block, and the threads are threadably matched with the threaded groove inside the fixing block through a sealing gasket.

[0012] Optionally, the limiting member includes a limiting plate, a limiting groove is provided inside the threaded barrel, the limiting plate is slidably arranged in the limiting groove, and one end of the limiting block located outside the threaded barrel slides inside the sliding groove.

[0013] Optionally, the fixing block is square outside and round inside, and the diameter inside the fixing block is the same as the diameter of one end of the sliding cylinder or the threaded cylinder where the slot is provided.

[0014] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art. Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described below at the same time:

[0015] The staff rotates the threaded cylinder to dislocate the threaded cylinder and the sealing gasket, and pulls the sliding cylinder to move on the surface of the threaded cylinder, so that the sliding cylinder moves the aged sealing gasket out of the fixed block, thereby facilitating the staff to replace it, facilitating the staff to operate, and improving the efficiency of replacing the sealing gasket.

[0016] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0018] Figure 1 This is a schematic diagram of the exploded structure of the connecting pipe body according to one embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the main structure of the connecting pipe according to an embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of a threaded barrel according to an embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of a connecting device according to an embodiment of the utility model;

[0022] Figure 5 This is a schematic diagram of the exploded structure of a connecting device according to an embodiment of the present invention.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Connecting pipe body; 2. Threaded tube; 3. Sliding tube; 4. Sliding groove; 5. Limit block; 6. Placement groove; 7. Fixing groove; 8. Clamping groove; 9. Fixing block; 10. Spring pin; 11. Thread; 12. Limit plate; 13. Limiting groove; 14. Sealing gasket; 15. Clamping tube; 16. Bolt.

[0025] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0026] The utility model will now be further described in detail with reference to the accompanying drawings.

[0027] See also Figure 1-5 As shown, in this embodiment, a crankcase ventilation pipeline structure is provided, including a connecting pipe body 1, and connecting devices are installed on both sides of the connecting pipe body 1;

[0028] The connection device includes a threaded barrel 2, a limiter is provided inside the threaded barrel 2, a limiter block 5 for rotational cooperation is symmetrically provided inside the limiter, a sliding barrel 3 is sleeved on the surface of the threaded barrel 2, a sliding groove 4 is provided on the surface of the sliding barrel 3, a placement groove 6 is provided on one end of the surface of the sliding barrel 3, a sealing gasket 14 is sleeved on the surface of the placement groove 6, a fixing groove 7 is provided on the surface of the placement groove 6, a bolt 16 is matched with the internal thread of the fixing groove 7, a clamping barrel 15 is provided on the other end of the sealing gasket 14, and a clamping groove 8 is provided on the surface of the clamping barrel 15. The threaded barrel 2 is threadedly connected to the connecting pipe body 1.

[0029] The application of one aspect of this embodiment is as follows: when in use, the staff rotates the fixing block 9 so that the fixing block 9 is connected to the connecting port. When the sealing gasket 14 needs to be replaced, first, the staff pulls the spring pin 10 to release the fixing of the sliding cylinder 3 by disengaging the spring pin 10 and the slot 8. The staff rotates the threaded cylinder 2 to the right. The rotation of the threaded cylinder 2 causes the threaded cylinder 2 to move on the surface of the connecting pipe body 1. The movement of the threaded cylinder 2 drives the limit block 5 to move to the right inside the sliding groove 4. When it is against the right side of the sliding groove 4, the limit block 5 drives the sliding cylinder 3 to move to the right. When the sliding cylinder 3 moves out of the fixing block 9, the aged sealing gasket 14 will be exposed. When the staff has replaced the sealing gasket 14, the staff rotates the threaded cylinder 2 again. The threaded cylinder 2 rotates to the left so that the threaded cylinder 2 moves to the left on the surface of the connecting pipe body 1. The movement of the threaded cylinder 2 drives the sliding The cylinder 3 moves. When the sliding cylinder 3 moves to the inside of the fixed block 9, the sliding cylinder 3 can be fixed by the action of the spring pin 10. The sealing gasket 14 placed between the placement groove 6 and the fixed groove 7 makes there is friction between the threaded cylinder 2 and the sliding cylinder 3. When the threaded cylinder 2 moves, the sliding cylinder 3 will move according to the friction between the threaded cylinder 2 and the threaded cylinder 2. The sealing gasket 14 is sleeved on the surfaces of the sliding cylinder 3 and the clamping cylinder 15 through the placement groove 6. When the clamping cylinder 15 moves to the inside of the fixed block 9 and is clamped with the spring pin 10, the threaded cylinder 2 continues to rotate so that the threaded cylinder 2 slides inside the sliding cylinder 3. When the thread 11 on the surface of the threaded cylinder 2 moves onto the sealing gasket 14, the sealing gasket 14 is squeezed by reducing the space gap between the sealing gasket 14 and the thread 11 on the threaded cylinder 2, so that the sealing gasket 14 is more fitted with the inside of the fixed block 9, thereby increasing its sealing performance.

[0030] The surface of the clamping barrel 15 of this embodiment is slidably matched with a fixing block 9, and the surface of the fixing block 9 is provided with a spring pin 10, and the spring pin 10 is engaged with the clamping slot 8. The staff pulls the spring pin 10, and the fixing of the sliding barrel 3 is released by the disengagement of the spring pin 10 and the clamping slot 8. The staff rotates the threaded barrel 2 again, and the threaded barrel 2 rotates to the left so that the threaded barrel 2 moves to the left on the surface of the connecting pipe body 1. The movement of the threaded barrel 2 drives the sliding barrel 3 to move. When the sliding barrel 3 moves to the inside of the fixing block 9, the fixing of the sliding barrel 3 can be completed by the action of the spring pin 10.

[0031] The sealing gasket 14 of this embodiment is fixed by bolts 16 in cooperation with the fixing groove 7; the threaded barrel 2 is provided with threads 11 at the position of the placement groove 6, and the fixing block 9 is provided with thread grooves inside, and the threads 11 are threadedly matched with the thread grooves inside the fixing block 9 through the sealing gasket 14. When the threads 11 on the surface of the threaded barrel 2 move onto the sealing gasket 14, the sealing gasket 14 is squeezed by reducing the space gap between the sealing gasket 14 and the threads 11 on the threaded barrel 2, so that the sealing gasket 14 fits more closely with the inside of the fixing block 9, thereby improving its sealing performance.

[0032] The limiting member of this embodiment includes a limiting plate 12, a limiting groove 13 is provided inside the threaded barrel 2, the limiting plate 12 is slidably arranged in the limiting groove 13, and the end of the limiting block 5 located outside the threaded barrel 2 slides inside the sliding groove 4. The limiting block 12 allows the sliding barrel 3 to rotate on the surface of the threaded barrel 2 through the limiting groove 13, and the limiting block 5 allows the sliding barrel 3 to slide on the surface of the threaded barrel 2 through the sliding groove 4.

[0033] The present invention is not limited to the above-mentioned implementation modes. Anyone should be aware of the structural changes made under the inspiration of the present invention. Any technical solution that is the same or similar to the present invention falls within the protection scope of the present invention. The technology, shape, and structure that are not described in detail in the present invention are all known technologies.

Claims

1. The crankcase ventilation pipeline structure is characterized by: include: A connecting pipe body (1), with connecting devices being installed on both sides of the connecting pipe body (1); The connecting device comprises a threaded barrel (2), a limiting member is provided inside the threaded barrel (2), a limiting block (5) which is symmetrically provided inside the limiting member and which is rotatably matched, a sliding barrel (3) is sleeved on the surface of the threaded barrel (2), a sliding groove (4) is provided on the surface of the sliding barrel (3), a placement groove (6) is provided on one end of the surface of the sliding barrel (3), a sealing gasket (14) is sleeved on the surface of the placement groove (6), a fixing groove (7) is provided on the surface of the placement groove (6), a bolt (16) is matched with the internal thread of the fixing groove (7), a clamping barrel (15) is provided on the other end of the sealing gasket (14), a clamping groove (8) is provided on the surface of the clamping barrel (15), and the threaded barrel (2) is threadedly connected to a connecting pipe body (1).

2. The crankcase ventilation pipeline structure according to claim 1, characterized in that: A fixing block (9) is slidably matched on the surface of the cartridge (15), a spring pin (10) is provided on the surface of the fixing block (9), and the spring pin (10) and the clamping groove (8) are mutually matched and clamped.

3. The crankcase ventilation pipeline structure according to claim 1, characterized in that: The sealing gasket (14) is fixed by means of bolts (16) in cooperation with the fixing groove (7).

4. The crankcase ventilation pipeline structure according to claim 1, characterized in that: The threaded barrel (2) is provided with a thread (11) at the position of the placement groove (6), and a thread groove is provided inside the fixing block (9). The thread (11) is threadably matched with the thread groove inside the fixing block (9) via a sealing gasket (14).

5. The crankcase ventilation pipeline structure according to claim 1, characterized in that: The limiting member comprises a limiting plate (12), a limiting groove (13) is provided inside the threaded barrel (2), the limiting plate (12) is slidably arranged in the limiting groove (13), and one end of the limiting block (5) located outside the threaded barrel (2) slides inside the sliding groove (4).

6. The crankcase ventilation pipeline structure according to claim 1, characterized in that: The fixing block (9) is square outside and round inside, and the diameter inside the fixing block (9) is the same as the diameter of one end of the sliding cylinder (3) and the threaded cylinder (2) where the slot (8) is provided.

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