Four-stroke gasoline engine box with filtering structure

Abstract

The utility model discloses a four-stroke gasoline engine case with a filtering structure, which comprises a four-stroke gasoline engine body, an oil tank is arranged on the four-stroke gasoline engine body, an oil inlet pipe is embedded in the middle of the top of the oil tank, rectangular grooves are formed in the left end and the right end of the inner side wall of the oil inlet pipe, and a fixing ring is fixedly mounted on the inner side wall of the oil inlet pipe; a mounting ring is clamped and sealed between the fixed ring and the movable ring, a filter screen is mounted in the mounting ring, a vertical pipe is mounted at the top of the movable ring, and the outer side wall of the vertical pipe is fixed in a rectangular groove through a transverse plate and a bolt. The phenomenon that part of gasoline falls from gaps and cannot be filtered is avoided, and the gasoline filtering effect is guaranteed.

Description

Technical Field

[0001] This patent relates to the technical field of gasoline engine cases, specifically a four-stroke gasoline engine case with a filtering structure. Background Art

[0002] With the advancement of urbanization and the widespread use of agricultural machinery automation, the demand for small gasoline engines is gradually increasing. By 2020, the production of small gasoline engines will exceed 50 million units, among which high-power small four-stroke gasoline engines are widely recognized for their excellent performance and low emissions of gases such as nitrogen oxides and carbon monoxide, and the use of high-power small four-stroke gasoline engine cases has also increased relatively. The casting of gasoline engine cases is difficult due to its complex structure. Therefore, the cases on the market currently have common technical difficulties in heat dissipation, gasoline recycling and production and processing. In response to the above problems, this project studies the production and processing, heat dissipation, and comprehensive resource utilization of high-power small four-stroke cases, aiming to improve the performance and environmental protection performance of existing cases, improve production efficiency, and promote industrialization, so as to promote the overall technical improvement of the small gasoline engine case industry.

[0003] An existing four-stroke gasoline engine case is provided with a fuel tank, and an oil inlet pipe is embedded on the top of the fuel tank. In order to increase the quality of gasoline entering the fuel tank, a filter is provided in the oil inlet pipe to filter out solid impurities in the gasoline. However, the filter is only placed on the inner wall ring of the oil inlet pipe in a stacking manner. The gasoline entering the oil inlet pipe is easy to fall through the gap between the filter and the oil inlet pipe, thereby failing to filter part of the gasoline, resulting in a poor filtering effect. For this reason, we propose a four-stroke gasoline engine case with a filtering structure. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of this patent is to provide a four-stroke gasoline engine case with a filtering structure. This patent provides rectangular grooves on both ends of the inner wall of the oil inlet pipe. A fixed ring is fixedly installed on the inner wall of the oil inlet pipe. A mounting ring is clamped and sealed between the fixed ring and the movable ring. A filter is installed in the mounting ring. A vertical pipe is installed on the top of the movable ring. The outer wall of the vertical pipe is fixed in the rectangular groove by a cross plate and bolts. When filling oil, it is only necessary to inject gasoline into the vertical pipe, and the gasoline can completely fall through the filter, avoiding the occurrence of part of the gasoline falling through the gap and failing to achieve the filtering effect, thereby ensuring the filtering effect of the gasoline.

[0005] The technical solution adopted by this patent to solve its technical problem is: a four-stroke gasoline engine case with a filtering structure, comprising a four-stroke gasoline engine body, a fuel tank is arranged on the four-stroke gasoline engine body, and an oil inlet pipe is embedded in the middle of the top of the fuel tank;

[0006] The left and right ends of the top of the inner side wall of the oil inlet pipe are provided with rectangular grooves, the bottom wall of the rectangular groove is provided with a threaded groove, a fixed ring is integrally formed on the lower side of the inner side wall of the oil inlet pipe, a movable ring is slidably installed on the inner side wall of the oil inlet pipe, a rubber ring is fixedly installed on the top of the fixed ring and the bottom of the movable ring, a mounting ring is provided between the fixed ring and the movable ring, and a filter is fixedly installed on the inner side wall of the mounting ring;

[0007] A vertical tube is integrally formed on the top of the movable ring, and horizontal plates are integrally formed on the left and right ends of the outer wall of the vertical tube. A circular hole is provided on the top of the horizontal plate, and a bolt is provided in the circular hole. The bottom end of the bolt is screwed into the thread groove, and the two rubber rings are tightly fitted on the top and bottom of the mounting ring respectively;

[0008] A pipe cover is screwed on the top of the outer side wall of the oil inlet pipe.

[0009] Furthermore, a rubber layer is fixedly mounted on the inner top wall of the pipe cover, and the bottom of the rubber layer is tightly fitted on the top of the oil inlet pipe.

[0010] Furthermore, the transverse plate does not contact the interior of the rectangular groove.

[0011] Furthermore, an annular groove is provided on the inner side wall of the circular hole, and a circular ring is integrally formed on the side wall of the bolt, and the circular ring is located in the annular groove.

[0012] Furthermore, the diameter of the circular ring matches the diameter of the circular groove, and the outer wall of the circular ring and the inner wall of the circular groove are relatively fitted and slidable.

[0013] Furthermore, the side wall of the bolt does not contact the inner wall of the circular hole.

[0014] The beneficial effects of this patent are:

[0015] 1. This patent provides rectangular grooves at both ends of the inner wall of the oil inlet pipe, a fixed ring is fixedly installed on the inner wall of the oil inlet pipe, a mounting ring is clamped and sealed between the fixed ring and the movable ring, a filter is installed in the mounting ring, a vertical pipe is installed on the top of the movable ring, and the outer wall of the vertical pipe is fixed in the rectangular groove by a cross plate and bolts. When filling oil, it is only necessary to inject gasoline into the vertical pipe, and the gasoline can completely fall through the filter, avoiding the occurrence of part of the gasoline falling through the gap and failing to achieve the filtering effect, thereby ensuring the filtering effect of the gasoline. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the patent structure.

[0017] Figure 2 This is a cross-sectional view of the patent structure.

[0018] Figure 3This is a schematic diagram of the oil inlet pipe of this patent.

[0019] Figure 4 It is an enlarged schematic diagram of the local structure of this patent.

[0020] Explanation of the reference numerals: 1 four-stroke gasoline engine body, 2 fuel tank, 3 fuel inlet pipe, 4 rectangular groove, 5 threaded groove, 6 fixing ring, 7 mounting ring, 8 filter, 9 movable ring, 10 rubber ring, 11 vertical pipe, 12 horizontal plate, 13 circular hole, 14 bolt, 15 pipe cover, 16 rubber layer, 17 circular ring groove, 18 circular ring. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the contents of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to the application.

[0022] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 This is a schematic diagram of the structure of the patent, a four-stroke gasoline engine case with a filtering structure, comprising a four-stroke gasoline engine body 1, a fuel tank 2 is arranged on the four-stroke gasoline engine body 1, and an oil inlet pipe 3 is embedded in the middle of the top of the fuel tank 2;

[0023] There is a piston inside the cylinder of a four-stroke gasoline engine, and the piston is connected to the crankshaft below through a connecting rod. When the engine is working, the intake valve at the top of the cylinder will open, and the mixture of gasoline and air will push the piston downward. Then the intake valve will close, and the piston will move upward and compress the oil-gas mixture. This is when the spark plug at the top will ignite and ignite the mixture. The burning gas will expand rapidly and push the piston downward. Then the exhaust valve will open, and the piston will move upward to discharge the exhaust gas after combustion. A complete four-stroke cycle is completed, and the crankshaft can rotate continuously by doing work in a reciprocating cycle.

[0024] Rectangular grooves 4 are provided at both left and right ends of the top of the inner wall of the oil inlet pipe 3, and a threaded groove 5 is provided on the bottom wall of the rectangular groove 4. A fixed ring 6 is integrally formed on the lower side of the inner wall of the oil inlet pipe 3, and a movable ring 9 is slidably installed on the inner wall of the oil inlet pipe 3. Rubber rings 10 are fixedly installed on the top of the fixed ring 6 and the bottom of the movable ring 9. A mounting ring 7 is provided between the fixed ring 6 and the movable ring 9, and a filter screen 8 is fixedly installed on the inner wall of the mounting ring 7;

[0025] like Figure 3 As shown, the inner and outer diameters of the fixed ring 6, the mounting ring 7 and the movable ring 9 match each other.

[0026] A vertical pipe 11 is integrally formed at the top of the moving ring 9, and horizontal plates 12 are integrally formed at both left and right ends of the outer wall of the vertical pipe 11. A circular hole 13 is provided at the top of the horizontal plate 12, and a bolt 14 is provided in the circular hole 13. The bottom end of the bolt 14 is screwed into the thread groove 5, and two rubber rings 10 are respectively tightly fitted on the top and bottom of the mounting ring 7;

[0027] A pipe cover 15 is screwed onto the top of the outer wall of the oil inlet pipe 3 .

[0028] Specifically, a rubber layer 16 is fixedly mounted on the inner top wall of the pipe cover 15 , and the bottom of the rubber layer 16 is tightly fitted on the top of the oil inlet pipe 3 .

[0029] The rubber layer 16 is provided to enhance the sealing effect between the pipe cover 15 and the oil inlet pipe 3 .

[0030] Specifically, the transverse plate 12 does not contact the inside of the rectangular groove 4 .

[0031] Since the transverse plate 12 does not contact the inside of the rectangular groove 4 , it can be prevented that the transverse plate 12 and the rectangular groove 4 will cause friction obstruction when the movable ring 9 is inserted into the oil inlet pipe 3 .

[0032] Specifically, an annular groove 17 is formed on the inner side wall of the circular hole 13 , and an annular ring 18 is integrally formed on the side wall of the bolt 14 . The annular ring 18 is located in the annular groove 17 .

[0033] By arranging the annular ring 18 in the annular groove 17, the bolt 14 and the horizontal plate 12 can be integrated. When the filter screen 8 needs to be removed for cleaning, the bolt 14 will still be in the circular hole 13 of the horizontal plate 12 to prevent the bolt 14 from detaching from the circular hole 13 and causing parts to be lost.

[0034] Specifically, the diameter of the circular ring 18 matches the diameter of the circular groove 17 , and the outer wall of the circular ring 18 and the inner wall of the circular groove 17 fit and slide relative to each other.

[0035] Specifically, the side wall of the bolt 14 does not contact the inner wall of the circular hole 13 .

[0036] The side wall of the bolt 14 does not contact the inner wall of the circular hole 13, and the outer wall of the circular ring 18 slides relatively with the inner wall of the circular groove 17, so that the side wall of the bolt 14 can avoid contacting the inner wall of the circular hole 13 and causing thread wear.

[0037] Working principle: When gasoline needs to be injected into the fuel tank 2, the pipe cover 15 can be rotated to remove it from the fuel inlet pipe 3, and then gasoline is injected into the standpipe 11. Since the top and bottom of the mounting ring 7 are sealed with rubber rings 10, the gasoline will completely fall through the filter 8, and the solid impurities in the gasoline will be intercepted by the filter 8;

[0038] When cleaning the filter screen 8, remove the bolts 14 and the threaded grooves 5, take out the standpipe 11 and the moving ring 9 upwards, and then take out the mounting ring 7 and the filter screen 8 from the oil inlet pipe 3 for cleaning.

[0039] It should be noted that the equipment structure and drawings of this patent mainly describe the principles of this patent. In terms of the technology of this design principle, the settings of the device's power mechanism, power supply system and control system are not fully described. However, on the premise that technical personnel in this field understand the principles of the above patent, they can clearly know the details of its power mechanism, power supply system and control system.

[0040] This patent provides rectangular grooves on both ends of the inner wall of the oil inlet pipe, a fixed ring is fixedly installed on the inner wall of the oil inlet pipe, a mounting ring is clamped and sealed between the fixed ring and the movable ring, a filter is installed in the mounting ring, a vertical pipe is installed on the top of the movable ring, and the outer wall of the vertical pipe is fixed in the rectangular groove by a cross plate and bolts. When filling oil, it is only necessary to inject gasoline into the vertical pipe, and the gasoline can completely fall through the filter, avoiding the occurrence of part of the gasoline falling through the gap and failing to achieve the filtering effect, thereby ensuring the filtering effect of the gasoline.

[0041] In the description of this patent, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inside", "front", "center", "two ends" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing this patent and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation; at the same time, unless otherwise clearly stipulated and limited, the terms "setting", "installation", "connection", "fixed installation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to the specific circumstances.

[0042] Although the embodiments of the present patent have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present patent, and the scope of the present patent is defined by the appended claims and their equivalents.

Claims

1. A four-stroke gasoline engine case with a filtering structure, characterized in that: It comprises a four-stroke gasoline engine body (1), wherein a fuel tank (2) is provided on the four-stroke gasoline engine body (1), and a fuel inlet pipe (3) is embedded in the middle of the top of the fuel tank (2); Rectangular grooves (4) are provided at both left and right ends of the top of the inner side wall of the oil inlet pipe (3); a threaded groove (5) is provided on the bottom wall of the rectangular groove (4); a fixed ring (6) is integrally formed on the lower side of the inner side wall of the oil inlet pipe (3); a movable ring (9) is slidably mounted on the inner side wall of the oil inlet pipe (3); a rubber ring (10) is fixedly mounted on the top of the fixed ring (6) and the bottom of the movable ring (9); a mounting ring (7) is provided between the fixed ring (6) and the movable ring (9); a filter screen (8) is fixedly mounted on the inner side wall of the mounting ring (7); A vertical tube (11) is integrally formed on the top of the movable ring (9), and horizontal plates (12) are integrally formed on the left and right ends of the outer wall of the vertical tube (11). A circular hole (13) is provided on the top of the horizontal plate (12), and a bolt (14) is provided in the circular hole (13). The bottom end of the bolt (14) is screwed into the thread groove (5), and the two rubber rings (10) are respectively tightly fitted on the top and bottom of the mounting ring (7); A pipe cover (15) is screwed onto the top of the outer wall of the oil inlet pipe (3).

2. A four-stroke gasoline engine case with a filtering structure according to claim 1, characterized in that: A rubber layer (16) is fixedly mounted on the inner top wall of the pipe cover (15), and the bottom of the rubber layer (16) is tightly fitted on the top of the oil inlet pipe (3).

3. A four-stroke gasoline engine case with a filtering structure according to claim 1, characterized in that: The transverse plate (12) does not contact the interior of the rectangular groove (4).

4. A four-stroke gasoline engine case with a filtering structure according to claim 1, characterized in that: The inner side wall of the circular hole (13) is provided with a circular groove (17), and a circular ring (18) is integrally formed on the side wall of the bolt (14), and the circular ring (18) is located in the circular groove (17).

5. A four-stroke gasoline engine case with a filtering structure according to claim 4, characterized in that: The diameter of the circular ring (18) matches the diameter of the circular ring groove (17), and the outer wall of the circular ring (18) and the inner wall of the circular ring groove (17) are relatively fitted and slidable.

6. A four-stroke gasoline engine case with a filtering structure according to claim 1, characterized in that: The side wall of the bolt (14) does not contact the inner side wall of the circular hole (13).

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