Explosion-proof cylinder cover

Abstract

The utility model discloses an anti-explosion cylinder cover, which belongs to the technical field of engine accessories and comprises a cuboid cylinder cover body, an oil sprayer mounting hole is arranged at the top of the cylinder cover body, a plurality of valve holes are arranged around the oil sprayer mounting hole at intervals, and a positioning piece is arranged at the bottom of the cylinder cover body. An engine exhaust port and an exhaust pipe mounting hole are formed in the left side wall of the cylinder cover body, and the engine exhaust port is formed in the middle of the left side wall of the cylinder cover body; an air inlet and an oil pipe mounting hole are formed in the right side wall of the cylinder cover body. An engine exhaust port is formed in the middle of the left side wall of the cuboid cylinder cover body, high-temperature exhaust exhausted by the exhaust port can be far away from parts around an engine, and the service life of the engine is prolonged. The valve holes are formed in the periphery of the oil injector mounting hole at intervals, and the oil pipe mounting hole is formed, so that the structure is more compact; the oil pipe penetrates through the oil pipe mounting hole and the inner cavity of the cylinder cover body and then is connected with the oil sprayer, and the oil pipe is not exposed, so that an engine pipeline is simpler and convenient to mount and maintain.

Description

Technical Field

[0001] The utility model belongs to the technical field of engine accessories, and particularly relates to an explosion-proof cylinder head. Background Art

[0002] The cylinder head is installed on the top of the cylinder block of the engine, sealing the cylinder from the upper part and forming a combustion chamber. At present, the design of the exhaust port on the existing cylinder head is unreasonable, resulting in high-temperature exhaust gas affecting the service life of the components around the engine. At the same time, the external installation of the oil pipe connected to the fuel injector on the cylinder head not only causes chaos in the external pipeline, but also makes the assembly and maintenance of the cylinder head difficult to a certain extent. Content of the Utility Model

[0003] In order to solve the above problems, the utility model provides an explosion-proof cylinder head.

[0004] To achieve the above object, the technical scheme adopted by the utility model is as follows:

[0005] An explosion-proof cylinder head includes a cylinder head body with a cuboid structure. The top of the cylinder head body is provided with a fuel injector mounting hole for mounting a fuel injector; a plurality of valve holes are arranged at intervals around the fuel injector mounting hole for mounting intake valves and exhaust valves; the bottom of the cylinder head body is provided with a positioning member for positioning and connecting with the engine; an engine exhaust port and an exhaust pipe mounting hole are provided on the left side wall of the cylinder head body, and the engine exhaust port is arranged at the middle position of the left side wall of the cylinder head body; an intake hole and an oil pipe mounting hole are provided on the right side wall of the cylinder head body, and the oil pipe mounting hole is used for the oil pipe to penetrate through, and the end of the oil pipe penetrates through the inside of the cylinder head body and is connected with the fuel injector.

[0006] Further, the plurality of valve holes include two intake valve holes and two exhaust valve holes, and the diameter of the intake valve holes is larger than that of the exhaust valve holes; the two intake valve holes and the two exhaust valve holes are arranged side by side in pairs around the fuel injector mounting hole.

[0007] Further, the exhaust pipe mounting hole is arranged above the engine exhaust port for mounting an exhaust pipe.

[0008] Further, the distance between the engine exhaust port and the four edges of the cylinder head body is not less than 12 - 18 mm.

[0009] Further, casting process holes are correspondingly arranged on the front and rear side walls of the cylinder head body for cooperating with a plug after casting and sand cleaning.

[0010] Further, the intake holes are arranged in parallel in three, and all three intake holes are rectangular openings.

[0011] Further, the positioning member is a tubular positioning sleeve.

[0012] Further, a cooling water channel is provided inside the cylinder head body, and a cooling water inlet and outlet are provided at the bottom of the cylinder head body for connection to a cooling water system.

[0013] Compared with the prior art, the technical progress achieved by the present utility model lies in:

[0014] By arranging the engine exhaust port in the middle of the left side wall of the cuboid cylinder head body, the high-temperature exhaust gas discharged from the exhaust port can be kept away from the components around the engine, extending their service life; at the same time, multiple valve holes for installing intake valves and exhaust valves are arranged at intervals around the fuel injector installation hole, making the structure more compact; and a fuel pipe installation hole is provided on the right side wall of the cylinder head body, enabling the fuel pipe to pass through the fuel pipe installation hole and the inner cavity of the cylinder head body and then be connected to the fuel injector, avoiding the exposure of the fuel pipe, making the external pipeline of the engine more concise and facilitating installation and maintenance. Description of the Drawings

[0015] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, but do not constitute a limitation to the present utility model.

[0016] In the drawings:

[0017] Figure 1 is a top view of an explosion-proof cylinder head provided by an embodiment of the present utility model;

[0018] Figure 2 is a front view of an explosion-proof cylinder head provided by an embodiment of the present utility model;

[0019] Figure 3 is Figure 2 the bottom view of the explosion-proof cylinder head in

[0020] Figure 4 is Figure 2 the left view of the explosion-proof cylinder head in

[0021] Figure 5 is Figure 2 the right view of the explosion-proof cylinder head in

[0022] Figure 6 is Figure 2 the rear view of the explosion-proof cylinder head in

[0023] In the figures:

[0024] 1 - cylinder head body; 2 - fuel injector installation hole; 3 - valve holes, 31 - intake valve hole, 32 - exhaust valve hole; 4 - positioning member; 5 - engine exhaust port; 6 - exhaust pipe installation hole; 7 - intake hole; 8 - fuel pipe installation hole; 9 - casting process hole; 10 - cooling water inlet and outlet; 11 - connection hole. Detailed Embodiments

[0025] The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in some embodiments. The embodiments of the present invention will be described below with reference to the accompanying drawings.

[0026] As shown in Figures 1-6 , an explosion-proof cylinder head includes a cylinder head body 1 with a cuboid structure. An injector mounting hole 2 is provided at the top of the cylinder head body 1 for mounting an injector; a plurality of valve holes 3 are spaced around the injector mounting hole 2 for mounting intake valves and exhaust valves; a positioning member 4 is provided at the bottom of the cylinder head body 1 for positioning and connecting with the engine; an engine exhaust port 5 and an exhaust pipe mounting hole 6 are provided on the left side wall of the cylinder head body 1, and the engine exhaust port 5 is arranged at the middle position of the left side wall of the cylinder head body 1; an intake hole 7 and a fuel pipe mounting hole 8 are provided on the right side wall of the cylinder head body 1, and the fuel pipe mounting hole 8 is for the fuel pipe to penetrate through, and the end of the fuel pipe penetrates through the inside of the cylinder head body 1 and is connected to the injector. Adopting this structure can keep the engine exhaust port away from other components, extend the service life of the engine; at the same time, the overall structure is more compact, avoiding the exposure of the fuel pipe and the abrasion generated during the assembly process, and making the assembly more convenient.

[0027] As a preferred structure, as shown in Figure 1 、 Figure 3 , the plurality of valve holes 3 include two intake valve holes 31 and two exhaust valve holes 32, and the diameter of the intake valve holes 31 is larger than that of the exhaust valve holes 32; the two intake valve holes 31 and the two exhaust valve holes 32 are arranged side by side in pairs around the injector mounting hole 2. Adopting this solution can make the overall structure more compact.

[0028] During the specific design, as shown in Figure 4 , the exhaust pipe mounting hole 6 is arranged above the engine exhaust port 5 for mounting an exhaust pipe. Among them, the distance between the engine exhaust port 5 and the four peripheral edges of the cylinder head body 1 is not less than 12 - 18 mm. Adopting this design can meet the safety requirements of the explosion-proof engine and avoid the surrounding components being burned by high-temperature gases.

[0029] In a specific embodiment of the present invention, as shown in Figure 2 、 Figure 6 , casting process holes 9 are correspondingly provided on the front and rear side walls of the cylinder head body 1 to facilitate the cleaning of casting sand after casting and ensure the cleanliness inside the cylinder head body. When assembling, a plug is used to block the casting process holes.

[0030] In a specific embodiment of the present invention, the intake holes 7 are arranged in three in parallel, and all three intake holes 7 are rectangular openings. The rectangular openings are convenient for mating and assembling with the intake pipe with a rectangular cross-section.

[0031] During specific manufacturing, the positioning member 4 is a tubular positioning sleeve, which is installed at the corresponding position of the engine to position the cylinder head body.

[0032] To ensure that the temperature of the cylinder head body remains within a certain range during the operation of the engine, a cooling water channel (not shown in the figure) is provided inside the cylinder head body 1, and a cooling water inlet and outlet 10 is provided at the bottom of the cylinder head body 1 for connection to the cooling water system. The cooling water inlet and outlet 10 is arranged in the middle of the positioning sleeve for installing the cooling water pipe. The cylinder head body is cooled by the cooling water to improve its service life.

[0033] In summary, the utility model has the advantages of simple and compact structure, small volume, and convenient assembly. The exhaust port of the engine is arranged in the middle of the side wall of the cuboid cylinder head body, which can keep the high-temperature exhaust gas discharged from the exhaust port away from the surrounding parts of the engine and extend the service life of the surrounding parts; a plurality of valve holes for installing intake valves and exhaust valves are arranged at intervals around the fuel injector installation hole, and the structure is more compact; at the same time, an oil pipe installation hole is provided on the side wall of the cylinder head body, so that the oil pipe can pass through the oil pipe installation hole and the inner cavity of the cylinder head body and then be connected to the fuel injector, avoiding the exposure of the oil pipe, making the external pipeline of the engine more concise and convenient for installation and maintenance.

[0034] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the scope of protection of the claims of the present utility model.

Claims

1. An explosion-proof cylinder head, characterized in that: It includes a cylinder head body with a cuboid structure. An injector mounting hole is provided at the top of the cylinder head body for mounting an injector; a plurality of valve holes are spaced around the injector mounting hole for mounting intake valves and exhaust valves; a positioning member is provided at the bottom of the cylinder head body for positioning and connecting with the engine; an engine exhaust port and an exhaust pipe mounting hole are provided on the left side wall of the cylinder head body, and the engine exhaust port is arranged at the middle position of the left side wall of the cylinder head body; an intake hole and a fuel pipe mounting hole are provided on the right side wall of the cylinder head body, and the fuel pipe mounting hole is for the fuel pipe to penetrate through, and the end of the fuel pipe penetrates through the inside of the cylinder head body and is connected with the injector.

2. The explosion-proof cylinder head according to claim 1, characterized in that: The plurality of valve holes include two intake valve holes and two exhaust valve holes. The diameter of the intake valve holes is larger than that of the exhaust valve holes; the two intake valve holes and the two exhaust valve holes are arranged side by side in pairs around the injector mounting hole.

3. An explosion-proof cylinder head according to claim 1, characterized in that: The exhaust pipe mounting hole is arranged above the engine exhaust port for mounting an exhaust pipe.

4. The explosion-proof cylinder head according to claim 3, characterized in that: The dimension of the engine exhaust port from the four peripheral edges of the cylinder head body is not less than 12 - 18 mm.

5. An explosion-proof cylinder head according to claim 1, characterized in that: Casting process holes are correspondingly provided on the front and rear side walls of the cylinder head body for cooperating with a plug after sand cleaning during casting.

6. The explosion-proof cylinder head according to claim 1, characterized in that: The intake holes are arranged in three in parallel, and all three intake holes are rectangular openings.

7. An explosion-proof cylinder head according to claim 1, characterized in that: The positioning member is a tubular positioning sleeve.

8. An explosion-proof cylinder head according to any one of claims 1-7, characterized in that: A cooling water channel is provided inside the cylinder head body, and a cooling water inlet and outlet is provided at the bottom of the cylinder head body for connecting with a cooling water system.

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