Oil spraying prevention and oil blocking device used in oil filling pipe

Abstract

The utility model discloses an oil spraying prevention and oil blocking device used in an oil filling pipe, which comprises a shell and a crankcase, and the shell is fixedly connected with the crankcase. According to the oil filling pipe fitting, the oil baffle pipe is fixed to the tail end of the oil filling pipe fitting, the outer surface wall of the oil baffle pipe and the inner surface wall of the crankcase are fixed, meanwhile, the oil baffle pipe has a certain length and is transversely arranged in the crankcase, and during mechanical oil filling, oil can still be normally guided into the crankcase through the oil filling pipe fitting and the oil baffle pipe; the oil baffle pipe can effectively prevent a large amount of oil from being surged back into the oil filling pipe fitting, the penetrating hole formed in the oil baffle pipe can prevent the oil from being accumulated in the oil baffle pipe, and therefore the using effect of the crankcase is improved, the lapping seat is connected with the second bushing ring through the locking rod, the first bushing ring and the second bushing ring are fixed, and the service life of the crankcase is prolonged. Therefore, the stable connection between the oil filling pipe fitting and the oil baffle pipe is guaranteed, the oil filling pipe fitting can be conveniently and independently disassembled and assembled on the basis that the oil baffle pipe and the crankcase are fixed, and the use convenience of the oil baffle device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of crankcases, in particular to an oil spray prevention and oil blocking device used in a fuel filling pipe. Background Art

[0002] The crankcase is a key component of an internal combustion engine. It is part of the engine body and its main function is to accommodate and protect the crankshaft and its related components, while providing support for the rotational motion of the crankshaft.

[0003] Chinese patent publication number CN105697185B, publication date 20181116, discloses a crankcase, which is provided with a lubricating oil splash channel connected between the crankcase and the rocker arm installation space of the engine cylinder assembly; when in use, the crankshaft connecting rod assembly in the crankcase will cause the lubricating oil to splash during operation, and the splashed lubricating oil partially enters the rocker arm installation space of the cylinder assembly through the lubricating oil splash channel, thereby lubricating and cooling the rocker arm and valve, etc. Due to the splash lubrication, a small amount of lubricating oil can play a good role.

[0004] Existing crankcases such as the above are all provided with an oil filling assembly consisting of a breathable cap and a filler pipe. During the specific implementation process, the end of the existing filler pipe is flush with the inner wall of the crankcase. When the machine is running, the rotation of the crankshaft causes the lubricating oil to splash, and the oil will flow back from the breathable cap through the filler pipe, affecting the normal use of the crankcase. Therefore, it is urgent to propose a corresponding oil blocking device to solve the above problem. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems and to propose an oil spray prevention and oil blocking device for the inside of a fuel filling pipe.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] An anti-spray oil-blocking device for the inside of a fuel filler pipe comprises a shell and a crankcase, wherein the shell is fixedly connected to the crankcase, an oil-blocking pipe is fixedly connected to the inner surface wall of the crankcase, and the oil-blocking pipe is horizontally arranged, an outer surface wall of the oil-blocking pipe is detachably connected to a fuel filler pipe fitting, and a breathable cap is fixedly connected to the top of the fuel filler pipe fitting.

[0008] Preferably, the opposite surfaces of the refueling pipe and the oil retaining pipe are fixedly connected with a liner ring 1 and a liner ring 2 respectively, and a sealing part and a connecting part are integrated between the liner ring 1 and the liner ring 2.

[0009] Preferably, the sealing portion includes a convex ring fixedly connected to the liner ring 1, the inner surface wall of the liner ring 2 is fixedly connected with a sealing ring, and the inner surface wall of the sealing ring abuts against the outer surface wall of the convex ring.

[0010] Preferably, the connecting portion includes a seat fixedly connected to the outer wall of the liner ring 1, and the seat is fixedly connected to the liner ring 2 via a locking rod.

[0011] Preferably, the inner surface wall of the seat is transitionally fitted with a rubber pad, and the bottom of the rubber pad abuts against the outer surface wall of the locking rod.

[0012] Preferably, the outer wall of the oil retaining pipe is provided with multiple groups of perforations, and the multiple groups of perforations are distributed in a ring shape.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0014] 1. In the present application, an oil retaining tube is fixed at the end of the oil filling pipe fitting. While the outer wall of the oil retaining tube is fixed to the inner wall of the crankcase, the oil retaining tube has a certain length and is placed horizontally in the crankcase. During mechanical refueling, the oil can still be normally introduced into the crankcase through the oil filling pipe fitting and the oil retaining tube. At the same time, the oil retaining tube can effectively prevent a large amount of oil from being agitated back into the oil filling pipe fitting, and the perforations on the oil retaining tube can prevent oil from accumulating inside the oil retaining tube, thereby improving the use effect of the crankcase.

[0015] 2. In the present application, liner ring 1 and liner ring 2 are fixed on the opposite surfaces of the fuel filling pipe fitting and the oil retaining pipe respectively, the convex ring on the outer wall of liner ring 1 is inserted into the inner wall of liner ring 2, and the sealing ring ensures the air tightness between liner ring 1 and liner ring 2. The connection between the seat and liner ring 2 is completed by the locking rod to achieve the fixation of liner ring 1 and liner ring 2, thereby ensuring the stability of the connection between the fuel filling pipe fitting and the oil retaining pipe, and on the basis of keeping the oil retaining pipe and the crankcase fixed, the fuel filling pipe fitting can be easily and independently disassembled and assembled, thereby improving the convenience of using the oil retaining device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shows a schematic diagram of the overall structure provided according to an embodiment of the utility model;

[0017] Figure 2 A schematic diagram of the structure of a limit plate provided according to an embodiment of the present utility model is shown;

[0018] Figure 3 A schematic diagram of the structure of the combination block provided according to an embodiment of the present utility model is shown;

[0019] Figure 4 A schematic diagram of a spring structure provided according to an embodiment of the utility model is shown.

[0020] Legend:

[0021] 1. Housing; 2. Crankcase; 3. Breather cap; 4. Oil filling pipe; 5. Oil retaining pipe; 6. Perforation; 7. Bushing ring 1; 8. Bushing ring 2; 9. Seat; 10. Rubber pad; 11. Locking rod; 12. Sealing ring; 13. Convex ring. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-4 , the utility model provides a technical solution:

[0024] An anti-spray oil blocking device for the interior of a fuel filler pipe comprises a housing 1 and a crankcase 2, wherein the housing 1 and the crankcase 2 are fixedly connected, an oil blocking pipe 5 is fixedly connected to the inner surface wall of the crankcase 2, and the oil blocking pipe 5 is arranged horizontally, and a fuel filler pipe 4 is detachably connected to the outer surface wall of the oil blocking pipe 5, and a breathable cap 3 is fixedly connected to the top of the fuel filler pipe 4;

[0025] An oil retaining tube 5 is fixed at the end of the refueling pipe fitting 4. While the outer wall of the oil retaining tube 5 is fixed to the inner wall of the crankcase 2, the oil retaining tube 5 has a certain length and is placed horizontally in the crankcase 2. During mechanical refueling, the oil can still be normally introduced into the crankcase 2 through the refueling pipe fitting 4 and the oil retaining tube 5. At the same time, the oil retaining tube 5 can effectively prevent a large amount of oil from being agitated back into the refueling pipe fitting 4, and the perforation 6 opened on the oil retaining tube 4 can prevent oil from accumulating inside the oil retaining tube 5, thereby improving the use effect of the crankcase 2.

[0026] Specifically, such as Figure 2 and Figure 4As shown, the opposite surfaces of the refueling pipe 4 and the oil retaining pipe 5 are fixedly connected with a liner ring 1 7 and a liner ring 2 8 respectively. A sealing part and a connecting part are integrated between the liner ring 1 7 and the liner ring 2 8. The sealing part includes a convex ring 13 fixedly connected to the liner ring 1 7. The inner surface wall of the liner ring 2 8 is fixedly connected to the sealing ring 12. The inner surface wall of the sealing ring 12 abuts against the outer surface wall of the convex ring 13. The connecting part includes a seat 9 fixedly connected to the outer surface wall of the liner ring 1 7. The seat 9 is fixedly connected to the liner ring 2 8 through a locking rod 11. The opposite surfaces of the tube 5 are respectively fixed with liner ring 1 7 and liner ring 2 8. The convex ring 13 on the outer wall of liner ring 1 7 is inserted into the inner wall of liner ring 2. The sealing ring ensures the air tightness between liner ring 1 and liner ring 2. The connection between the seat and liner ring 2 is completed through the locking rod to achieve the fixation of liner ring 1 and liner ring 2, thereby ensuring the stability of the connection between the refueling pipe fitting and the oil retaining pipe, and on the basis of keeping the oil retaining pipe and the crankcase fixed, the refueling pipe fitting can be easily and independently disassembled and assembled, thereby improving the convenience of using the oil retaining device.

[0027] Specifically, such as Figure 2 and Figure 3 As shown, the inner wall of the seat 9 is transitionally fitted with a rubber pad 10, and the bottom of the rubber pad 10 is in contact with the outer wall of the locking rod 11, thereby realizing isolation protection of the locking rod 11. The outer wall of the oil stop pipe 5 is provided with multiple groups of perforations 6, and the multiple groups of perforations 6 are distributed in a ring shape. The perforations 6 opened on the oil stop pipe 4 can prevent oil from accumulating inside the oil stop pipe 5.

[0028] Working principle: The oil retaining tube 5 is fixed at the end of the refueling pipe 4. The outer wall of the oil retaining tube 5 is fixed to the inner wall of the crankcase 2. The oil retaining tube 5 has a certain length and is placed horizontally in the crankcase 2. When the machine is refueling, the oil can still be normally introduced into the crankcase 2 through the refueling pipe 4 and the oil retaining tube 5. At the same time, the oil retaining tube 5 can effectively prevent a large amount of oil from agitating back into the refueling pipe 4, and the perforation 6 opened on the oil retaining tube 4 can prevent oil from accumulating inside the oil retaining tube 5, thereby improving the use effect of the crankcase 2 and 4 and the opposite surface of the oil retaining pipe 5 are fixed with liner ring 1 7 and liner ring 2 8 respectively. The convex ring 13 on the outer surface wall of liner ring 1 7 is inserted into the inner surface wall of liner ring 2. The sealing ring ensures the airtightness between liner ring 1 and liner ring 2. The connection between the seat and liner ring 2 is completed through the locking rod to achieve the fixation of liner ring 1 and liner ring 2, thereby ensuring the stability of the connection between the refueling pipe fitting and the oil retaining pipe, and on the basis of keeping the oil retaining pipe and the crankcase fixed, the refueling pipe fitting can be easily and independently disassembled and assembled, thereby improving the convenience of using the oil retaining device.

[0029] The above description of the embodiments is intended to enable those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An anti-spray oil blocking device for the interior of a fuel filler pipe, comprising a housing (1) and a crankcase (2), characterized in that: The housing (1) is fixedly connected to the crankcase (2); an oil retaining pipe (5) is fixedly connected to the inner surface wall of the crankcase (2), and the oil retaining pipe (5) is arranged horizontally; an outer surface wall of the oil retaining pipe (5) is detachably connected to a refueling pipe fitting (4), and a breathable cap (3) is fixedly connected to the top of the refueling pipe fitting (4).

2. The oil spray prevention and oil blocking device for the interior of the fuel filling pipe according to claim 1, characterized in that: The opposite surfaces of the refueling pipe (4) and the oil retaining pipe (5) are respectively fixedly connected with a liner ring 1 (7) and a liner ring 2 (8), and a sealing part and a connecting part are integrated between the liner ring 1 (7) and the liner ring 2 (8).

3. The oil spray prevention and oil blocking device for the interior of the fuel filling pipe according to claim 2, characterized in that: The sealing portion includes a convex ring (13) fixedly connected to the liner ring (7), and the inner surface wall of the liner ring (8) is fixedly connected to a sealing ring (12), and the inner surface wall of the sealing ring (12) abuts against the outer surface wall of the convex ring (13).

4. The oil spray prevention and oil blocking device for the interior of the fuel filling pipe according to claim 3, characterized in that: The connecting portion comprises a seat (9) fixedly connected to the outer wall of the liner ring (7), and the seat (9) is fixedly connected to the liner ring (8) via a locking rod (11).

5. The oil spray prevention and oil blocking device for the interior of the fuel filling pipe according to claim 4, characterized in that: The inner surface wall of the seat (9) is transitionally matched with a rubber pad (10), and the bottom of the rubber pad (10) is in contact with the outer surface wall of the locking rod (11).

6. The oil spray prevention and oil blocking device for the interior of the fuel filling pipe according to claim 5, characterized in that: The outer wall of the oil retaining pipe (5) is provided with a plurality of groups of through holes (6), and the plurality of groups of through holes (6) are distributed in a ring shape.

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