Engine oil gas collection device

Abstract

The utility model discloses an engine oil gas collection device, including the upper cavity, the upper cavity is connected with the lower cavity through the hinge, the whole longitudinal section that the upper cavity is connected with the lower cavity is the water drop shape structure, still include locking unit, and the upper cavity is connected with the lower cavity and is fixed through the locking unit. The utility model discloses an engine oil gas collection device, solved the problem that the oil gas leak of the butt joint part of the butt joint exhaust pipe of two sections of the existing heavy diesel engine can not be effectively collected.

Description

Technical Field

[0001] This utility model belongs to the technical field of oil and gas collection equipment, and relates to an engine oil and gas collection device. Background Technology

[0002] In heavy-duty diesel engine power systems, exhaust pipes often employ a two-section docking design to meet installation and maintenance needs. However, this docking structure has significant drawbacks during prolonged idling of the diesel engine: unburned fuel gas from the cylinder enters the exhaust pipe with the exhaust and some of it condenses into liquid oil stains. Furthermore, the joint surface between the two exhaust pipe sections is difficult to seal completely due to assembly gaps, leading to fuel gas leakage from these gaps. Currently, there is a lack of dedicated fuel gas collection devices for this docking area. Existing collection devices are also unable to effectively intercept leaked fuel gas due to their inability to adapt to the flanges, connectors, and other protruding structures and narrow spaces in the docking area. This results in leaked fuel gas dripping directly onto the equipment body, the ground, or the surrounding environment, causing pollution. Additionally, oil stains dripping onto high-temperature components can easily form flammable gas clouds, posing a flash fire hazard. They can also penetrate critical components, accelerating corrosion and wear, increasing the cleaning burden on maintenance personnel and equipment maintenance costs. Therefore, a dedicated fuel gas collection solution adapted to the docking structure is urgently needed to solve these problems. Utility Model Content

[0003] The purpose of this invention is to provide an engine oil and gas collection device, which solves the problem that oil and gas leakage at the joint of the two-section exhaust pipe of the existing heavy-duty diesel engine cannot be effectively collected.

[0004] The technical solution adopted by this utility model is an engine oil and gas collection device, including an upper cavity, a lower cavity connected to the upper cavity by a hinge, the overall longitudinal section of the upper cavity and the lower cavity is teardrop-shaped, and a locking unit is also included, the upper cavity and the lower cavity are fixedly connected by the locking unit.

[0005] The features of this utility model also include: The upper cavity includes an upper cavity top plate, which has an arched structure. Upper cavity side plates are fixed to both sides of the upper cavity top plate, and the sides of the upper cavity top plate are connected to the lower cavity via hinges.

[0006] The upper cavity side plate has a fan-shaped structure. The outer arc of the upper cavity side plate coincides with and is fixed to the top plate of the upper cavity. The inner arc of the upper cavity side plate is semi-circular and matches the outer circumference arc of the engine exhaust pipe.

[0007] The lower cavity includes a lower cavity bottom plate, which has an arched structure. Lower cavity side plates are fixed to both sides of the lower cavity bottom plate. The upper cavity top plate is connected to the lower cavity bottom plate via hinges.

[0008] The lower cavity side plate has a crescent-shaped structure. The outer arc of the lower cavity side plate is fixedly connected to the upper cavity side plate. The inner arc of the lower cavity side plate is semi-circular. The inner arc of the lower cavity side plate matches the outer circumference arc of the engine exhaust pipe. The inner arc of the upper cavity side plate and the inner arc of the lower cavity side plate together form a circular mounting hole, which matches the engine exhaust pipe.

[0009] The lower cavity also includes an isolation plate with an arc-shaped structure. The isolation plate is horizontally set inside the lower cavity, and its two sides are tangentially fixed to the inner wall of the bottom plate of the lower cavity. The two sides of the isolation plate coincide with the two sides of the bottom plate of the lower cavity. The isolation plate, the bottom plate of the lower cavity, and the two side plates of the lower cavity together form an oil storage cavity. The isolation plate is evenly provided with several oil passage holes. The arc-shaped opening direction of the isolation plate is consistent with the arc-shaped opening direction of the bottom plate of the lower cavity. The arc length of the end face of the isolation plate is greater than the diameter of the end face of the bottom plate of the lower cavity, and the arc length of the end face of the isolation plate is less than the arc length of the end face of the bottom plate of the lower cavity.

[0010] Several oil passage holes are arranged in a single row, and several oil passage holes are located at the bottom trough of the isolation plate. The diameter of each oil passage hole is 2~4mm.

[0011] The hinge is located on one side of the mating edge between the upper and lower cavities. One end of the hinge is fixed to the lower edge of the upper cavity, and the other end of the hinge is fixed to the upper edge of the lower cavity. The upper and lower cavities open and close the circular mounting hole by rotating the hinge around the hinge axis.

[0012] The lower cavity also includes an oil drain plug, which is located at the bottom of the side of the lower cavity side plate, and a sealing gasket is provided between the oil drain plug and the lower cavity side plate.

[0013] The locking unit includes an upper fixing strap, both ends of which are fixed to the outer wall of the top plate of the upper cavity. A T-shaped fixing rod is installed in the space formed by the bending of the upper fixing strap. The vertical section of the T-shaped fixing rod passes through the upper fixing strap. It also includes a lower fixing strap, which is correspondingly set to the upper fixing strap. Both ends of the lower fixing strap are fixed to the outer wall of the bottom plate of the lower cavity. A T-shaped fixing member is installed in the space formed by the bending of the lower fixing strap. The T-shaped fixing member has a through hole along its vertical section. The T-shaped fixing rod passes through the through hole. A locking nut is fitted on the screw at the end of the T-shaped fixing rod.

[0014] The beneficial effects of this utility model are: The engine oil and gas collection device provided by this utility model adopts a teardrop-shaped structure and is adapted to the docking area of ​​two-section exhaust pipes. It can effectively intercept oil and gas leaking from the docking gap. The lower chamber can fully collect the oil stains after condensation and separation, preventing oil and gas from dripping directly and polluting the equipment body and the surrounding environment. The upper and lower chambers can be rotated and opened and closed by hinges. With the removable oil drain plug at the bottom, oil stain discharge and device maintenance can be completed without the need for complete disassembly, shortening maintenance time and greatly improving the convenience of operation and maintenance. An arc-shaped isolation plate is set in the chamber to block the upper area from the oil storage chamber, preventing oil stains from shaking and contacting the high-temperature exhaust pipe, significantly reducing safety hazards. At the same time, it reduces the permeation of oil and gas into key components of the equipment, delays the corrosion and wear of components, and reduces the operation and maintenance costs of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the engine oil and gas collection device of this utility model.

[0016] In the diagram, 1. Upper cavity, 101. Top plate of upper cavity, 102. Side plate of upper cavity, 2. Hinge, 3. Lower cavity, 301. Bottom plate of lower cavity, 302. Side plate of lower cavity, 4. Locking unit, 401. Upper fixing strap, 402. T-shaped fixing rod, 403. Lower fixing strap, 404. T-shaped fastener, 405. Locking nut, 5. Circular mounting hole, 6. Isolation plate, 7. Oil storage cavity, 8. Oil passage hole, 9. Oil drain plug, 10. Sealing gasket. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0018] The engine oil vapor collection device provided by this utility model, such as Figure 1As shown, the device includes an upper cavity 1, which is connected to a lower cavity 3 via a hinge 2. The overall longitudinal section of the upper cavity 1 and the lower cavity 3 is teardrop-shaped. It also includes a locking unit 4, which secures the upper cavity 1 and the lower cavity 3 together. The upper cavity 1 includes an upper cavity top plate 101, which has an arched shape. Upper cavity side plates 102 are fixed to both sides of the upper cavity top plate 101, and are connected to the lower cavity 3 via hinges 2. The upper cavity side plates 102 have a fan-shaped structure, with their outer arc overlapping and fixed to the upper cavity top plate 101. The inner arc of the upper cavity side plates 102 is semi-circular, and its inner arc matches the outer circumference of the engine exhaust pipe. The lower cavity 3 includes a lower... The lower cavity bottom plate 301 has an arched structure, and lower cavity side plates 302 are fixed to both sides of the lower cavity bottom plate 301. The upper cavity top plate 101 is connected to the lower cavity bottom plate 301 via hinges 2. The lower cavity side plates 302 have a crescent-shaped structure, with their outer arcs overlapping and fixed to each other. The inner arc of the lower cavity side plates 302 is semi-circular, and its inner arc matches the outer circumference arc of the engine exhaust pipe. The inner arcs of the upper cavity side plates 102 and the lower cavity side plates 302 together form a circular mounting hole 5, which matches the engine exhaust pipe. The lower cavity 3 also includes an isolation plate 6, which has an arc-shaped structure and is horizontally positioned inside the lower cavity 3. The two sides of the isolation plate 6 are tangentially fixed to each other. On the inner wall of the lower cavity bottom plate 301, the two sides of the isolation plate 6 coincide with the two sides of the lower cavity bottom plate 301. The isolation plate 6, the lower cavity bottom plate 301, and the two lower cavity side plates 302 together form an oil storage cavity 7. The isolation plate 6 is evenly provided with a number of oil passage holes 8. The arc-shaped opening direction of the isolation plate 6 is consistent with the arc-shaped opening direction of the lower cavity bottom plate 301. The arc length of the end face of the isolation plate 6 is greater than the end face diameter of the lower cavity bottom plate 301, and the arc length of the end face of the isolation plate 6 is less than the end face arc length of the lower cavity bottom plate 301. The number of oil passage holes 8 are arranged in a single row and are located at the bottom trough of the isolation plate 6. The diameter of each oil passage hole 8 is 2~4mm. The hinge 2 is located on one side of the mating edge between the upper cavity 1 and the lower cavity 3. One connecting end of the hinge 2 is connected to the lower edge of the upper cavity 1. The hinge 2 is fixedly connected to the upper edge of the lower cavity 3. The upper cavity 1 and the lower cavity 3 are connected by the hinge 2 rotating around the hinge axis to open and close the circular mounting hole 5. The lower cavity 3 also includes an oil drain plug 9, which is located at the bottom of the side of the lower cavity side plate 302. A sealing gasket 10 is provided between the oil drain plug 9 and the lower cavity side plate 302 for sealing the threaded opening of the oil drain plug 9 and the lower cavity side plate 302. The sealing gasket 10 adopts a combined sealing ring structure, which is a sealing element made by an integral bonding and vulcanization process of a rubber inner ring and a metal outer ring. The metal outer ring of the sealing gasket 10 mainly undertakes the support function, and the rubber inner ring achieves the sealing effect after compression and deformation. The compression amount is controlled by the thickness difference between the inner and outer rings, and the applicable range is -30°C to +200°C.The locking unit 4 includes an upper fixing strap 401, both ends of which are fixed to the outer wall of the upper cavity top plate 101. A T-shaped fixing rod 402 is installed in the space formed by the bending of the upper fixing strap 401. The vertical section of the T-shaped fixing rod 402 passes through the upper fixing strap 401. It also includes a lower fixing strap 403, which is correspondingly arranged to the upper fixing strap 401. Both ends of the lower fixing strap 403 are fixed to the outer wall of the lower cavity bottom plate 301. A T-shaped fixing member 404 is installed in the space formed by the bending of the lower fixing strap 403. The T-shaped fixing member 404 has a through hole along its vertical section, through which the T-shaped fixing rod 402 passes. A locking nut 405 is fitted onto the screw at the end of the T-shaped fixing rod 402.

[0019] The engine oil vapor collection device provided by this utility model works as follows: The oil vapor collection device is installed on the engine exhaust pipe. When oil vapor is discharged from the connection of the engine exhaust pipe, the oil vapor enters the interior of the device cavity, condenses on the inner wall to form oil stains, and collects on the central arc-shaped isolation plate 6 under the action of gravity. It then enters the bottom oil storage chamber 7 through the oil passage hole 8 at the bottom of the isolation plate 6, where the oil storage chamber 7 stores the collected oil stains. The collected oil stains can be periodically discharged and recycled through the bottom drain plug 9. The isolation plate 6 is designed with a bottom arc-shaped isolation structure, which can effectively block the upper part of the isolation plate 6 from the oil storage chamber, preventing the oil stains from contacting the exhaust pipe again when they shake, and effectively increasing the flash ignition critical temperature.

[0020] Example 1 The engine oil vapor collection device proposed in this embodiment, such as Figure 1As shown, the device includes an upper cavity 1, which is connected to a lower cavity 3 via a hinge 2. The overall longitudinal section of the upper cavity 1 and the lower cavity 3 is teardrop-shaped. It also includes a locking unit 4, which secures the upper cavity 1 and the lower cavity 3 together. The upper cavity 1 includes an upper cavity top plate 101, which has an arched shape. Upper cavity side plates 102 are fixed to both sides of the upper cavity top plate 101, and are connected to the lower cavity 3 via hinges 2. The upper cavity side plates 102 have a fan-shaped structure, with their outer arcs overlapping and fixed to the upper cavity top plate 101. Their inner arcs are semi-circular. The inner arc of the lower cavity 3 is adapted to the outer circumference arc of the engine exhaust pipe; the lower cavity 3 includes a lower cavity bottom plate 301, which has an arched structure. The lower cavity bottom plate 301 has lower cavity side plates 302 fixedly connected to both sides of the lower cavity bottom plate 301. The upper cavity top plate 101 is connected to the lower cavity bottom plate 301 via a hinge 2. The lower cavity side plate 302 has a crescent-shaped structure. The outer arc of the lower cavity side plate 302 is aligned with the outer arc of the engine exhaust pipe. The inner arc of the lower cavity side plate 302 is semi-circular and is adapted to the outer circumference arc of the engine exhaust pipe. The inner arc of the upper cavity side plate 102 and the inner arc of the lower cavity side plate 302 together form a circular mounting hole 5, which is adapted to the engine exhaust pipe.

[0021] Example 2 The engine oil vapor collection device proposed in this embodiment, such as Figure 1As shown, the device includes an upper cavity 1, which is connected to a lower cavity 3 via a hinge 2. The overall longitudinal section of the upper cavity 1 and the lower cavity 3 is teardrop-shaped. It also includes a locking unit 4, which secures the upper cavity 1 and the lower cavity 3 together. The upper cavity 1 includes an upper cavity top plate 101, which is arched. Upper cavity side plates 102 are fixed to both sides of the upper cavity top plate 101. The sides of the upper cavity top plate 101 are connected to the lower cavity 3 via hinges 2. Plate 102 has a fan-shaped structure. The outer arc of the upper cavity side plate 102 coincides with and is fixedly connected to the upper cavity top plate 101. The inner arc of the upper cavity side plate 102 is semi-circular and matches the outer circumference arc of the engine exhaust pipe. The lower cavity 3 includes a lower cavity bottom plate 301, which has an arched structure. The lower cavity side plates 302 are fixedly connected to both sides of the lower cavity bottom plate 301. The side of the upper cavity top plate 101 is connected to the lower cavity bottom plate 301 via hinges 2. 302 has a crescent-shaped structure. The outer arc of the lower cavity side plate 302 coincides with and is fixed to the engine exhaust pipe. The inner arc of the lower cavity side plate 302 is semi-circular and matches the outer circumference arc of the engine exhaust pipe. The inner arc of the upper cavity side plate 102 and the inner arc of the lower cavity side plate 302 together form a circular mounting hole 5, which matches the engine exhaust pipe. The lower cavity 3 also includes an isolation plate 6, which has an arc-shaped structure and is horizontally set inside the lower cavity 3. The isolation plate 6 has two sides. The partition plate 6 is tangentially fixed to the inner wall of the lower cavity bottom plate 301. The two sides of the partition plate 6 coincide with the two sides of the lower cavity bottom plate 301. The partition plate 6, the lower cavity bottom plate 301, and the two lower cavity side plates 302 together form an oil storage cavity 7. The partition plate 6 is evenly provided with a number of oil passage holes 8. The arc opening direction of the partition plate 6 is consistent with the arc opening direction of the lower cavity bottom plate 301. The arc length of the end face of the partition plate 6 is greater than the end face diameter of the lower cavity bottom plate 301, and the arc length of the end face of the partition plate 6 is less than the end face arc length of the lower cavity bottom plate 301.

[0022] Example 3 The engine oil vapor collection device proposed in this embodiment, such as Figure 1As shown, the device includes an upper cavity 1, which is connected to a lower cavity 3 via a hinge 2. The overall longitudinal section of the upper cavity 1 and the lower cavity 3 is teardrop-shaped. It also includes a locking unit 4, which secures the upper cavity 1 and the lower cavity 3 together. The upper cavity 1 includes an upper cavity top plate 101, which has an arched shape. Upper cavity side plates 102 are fixed to both sides of the upper cavity top plate 101, and are connected to the lower cavity 3 via hinges 2. The upper cavity side plates 102 have a fan-shaped structure. The outer arc of the cavity side plate 102 coincides with and is fixedly connected to the upper cavity top plate 101. The inner arc of the upper cavity side plate 102 is semi-circular, and the inner arc of the upper cavity side plate 102 matches the outer circumference arc of the engine exhaust pipe. The lower cavity 3 includes a lower cavity bottom plate 301, which has an arched structure. The lower cavity bottom plate 301 has lower cavity side plates 302 fixedly connected to its two sides. The side of the upper cavity top plate 101 is connected to the lower cavity bottom plate 301 via a hinge 2. The lower cavity side plate 302 has a crescent-shaped structure, and the outer arc of the lower cavity side plate 302 coincides with and is fixedly connected to the upper cavity top plate 101. The lower cavity side plate 302 is fixedly connected to the inner arc of the lower cavity side plate 302, which is semi-circular and matches the outer circumferential arc of the engine exhaust pipe. The inner arc of the upper cavity side plate 102 and the inner arc of the lower cavity side plate 302 together form a circular mounting hole 5, which matches the engine exhaust pipe. The lower cavity 3 also includes an isolation plate 6, which has an arc-shaped structure and is horizontally set inside the lower cavity 3. The two sides of the isolation plate 6 are tangentially fixed to the inner wall of the lower cavity bottom plate 301, and the two sides of the isolation plate 6 overlap with the two sides of the lower cavity bottom plate 301. Together, the isolation plate 6, the lower cavity bottom plate 301, and the two lower cavity side plates 302 form an oil storage cavity 7. The isolation plate 6 is evenly provided with a number of oil passage holes 8. The arc-shaped opening direction of the isolation plate 6 is consistent with the arc-shaped opening direction of the lower cavity bottom plate 301. The arc length of the end face of the isolation plate 6 is greater than the end face diameter of the lower cavity bottom plate 301, and the arc length of the end face of the isolation plate 6 is less than the end face arc length of the lower cavity bottom plate 301. The number of oil passage holes 8 are arranged in a single row and are located at the bottom trough of the isolation plate 6. The diameter of each oil passage hole 8 is 2~4mm. Example 4 The engine oil vapor collection device proposed in this embodiment, such as Figure 1As shown, the device includes an upper cavity 1, which is connected to a lower cavity 3 via a hinge 2. The overall longitudinal section of the upper cavity 1 and the lower cavity 3 is teardrop-shaped. It also includes a locking unit 4, which secures the upper cavity 1 and the lower cavity 3 together. The upper cavity 1 includes an upper cavity top plate 101, which has an arched shape. Upper cavity side plates 102 are fixed to both sides of the upper cavity top plate 101, and are connected to the lower cavity 3 via hinges 2. The upper cavity side plates 102 have a fan-shaped structure, and their outer arcs overlap and are fixed to the upper cavity top plate 101. The inner arc of the upper cavity side plate 102 is semi-circular, and the inner arc of the upper cavity side plate 102 matches the outer circumferential arc of the engine exhaust pipe; the lower cavity 3 includes a lower cavity bottom plate 301, which has an arched structure, and lower cavity side plates 302 are fixedly connected to both sides of the lower cavity bottom plate 301. The side of the upper cavity top plate 101 is connected to the lower cavity bottom plate 301 via a hinge 2; the lower cavity side plate 302 has a crescent-shaped structure, and the outer arc of the lower cavity side plate 302 coincides with and is fixedly connected to the upper cavity top plate 101. The inner arc of the lower cavity side plate 302 is semi-circular, and the inner arc of the lower cavity side plate 302 matches the outer circumferential arc of the engine exhaust pipe. The inner arc of the side plate 102 and the inner arc of the lower cavity side plate 302 together form a circular mounting hole 5, which is adapted to the engine exhaust pipe. The lower cavity 3 also includes an isolation plate 6, which has an arc-shaped structure and is horizontally set inside the lower cavity 3. The two sides of the isolation plate 6 are tangentially fixed to the inner wall of the lower cavity bottom plate 301, and the two sides of the isolation plate 6 coincide with the two sides of the lower cavity bottom plate 301. The isolation plate 6, the lower cavity bottom plate 301, and the two lower cavity side plates 302 together form an oil storage cavity 7. The isolation plate 6 is evenly provided with a number of oil passage holes 8, and the arc-shaped opening direction of the isolation plate 6 is the same as the arc of the lower cavity bottom plate 301. The opening directions are consistent. The arc length of the end face of the isolation plate 6 is greater than the diameter of the end face of the bottom plate 301 of the lower cavity, and the arc length of the end face of the isolation plate 6 is less than the arc length of the end face of the bottom plate 301 of the lower cavity. Several oil passage holes 8 are arranged in a single row and are located at the bottom trough of the isolation plate 6. The diameter of each oil passage hole 8 is 2~4mm. The hinge 2 is located on one side of the mating edge of the upper cavity 1 and the lower cavity 3. One connecting end of the hinge 2 is fixed to the lower edge of the upper cavity 1, and the other connecting end of the hinge 2 is fixed to the upper edge of the lower cavity 3. The upper cavity 1 and the lower cavity 3 achieve the opening and closing of the circular mounting hole 5 by rotating the hinge 2 around the hinge axis.

[0023] Example 5 The engine oil vapor collection device proposed in this embodiment, such as Figure 1As shown, the device includes an upper cavity 1, which is connected to a lower cavity 3 via a hinge 2. The overall longitudinal section of the upper cavity 1 and the lower cavity 3 is teardrop-shaped. It also includes a locking unit 4, which secures the upper cavity 1 and the lower cavity 3 together. The upper cavity 1 includes an upper cavity top plate 101, which has an arched shape. Upper cavity side plates 102 are fixed to both sides of the upper cavity top plate 101, and are connected to the lower cavity 3 via hinges 2. The upper cavity side plates 102 have a fan-shaped structure, with their outer arcs overlapping and fixed to the upper cavity top plate 101. The inner arc of the upper cavity side plates 102 is semi-circular. The inner arc of the upper cavity side plate 102 matches the outer circumferential arc of the engine exhaust pipe; the lower cavity 3 includes a lower cavity bottom plate 301, which has an arched structure, and lower cavity side plates 302 are fixedly connected to both sides of the lower cavity bottom plate 301. The side of the upper cavity top plate 101 is connected to the lower cavity bottom plate 301 via a hinge 2; the lower cavity side plate 302 has a crescent-shaped structure, and its outer arc coincides with and is fixedly connected to the upper cavity side plate 102. The inner arc of the lower cavity side plate 302 is semi-circular, and its inner arc matches the outer circumferential arc of the engine exhaust pipe. The inner arcs of the upper cavity side plate 102 and the lower cavity side plate 302 together form a circular mounting hole. 5. The circular mounting hole 5 is adapted to the engine exhaust pipe; the lower cavity 3 also includes an isolation plate 6, which has an arc-shaped structure and is horizontally set inside the lower cavity 3. The two sides of the isolation plate 6 are tangentially fixed to the inner wall of the lower cavity bottom plate 301, and the two sides of the isolation plate 6 coincide with the two sides of the lower cavity bottom plate 301. The isolation plate 6, the lower cavity bottom plate 301, and the two lower cavity side plates 302 together form an oil storage cavity 7. The isolation plate 6 is evenly provided with a number of oil passage holes 8. The arc-shaped opening direction of the isolation plate 6 is consistent with the arc-shaped opening direction of the lower cavity bottom plate 301. The arc length of the end face of the isolation plate 6 is greater than the end face diameter of the lower cavity bottom plate 301, and the arc length of the end face of the isolation plate 6 is less than the diameter of the lower cavity bottom plate 301. The lower cavity bottom plate 301 has an arc length at the end face; several oil passage holes 8 are arranged in a single row, and several oil passage holes 8 are located at the bottom trough of the isolation plate 6. The diameter of several oil passage holes 8 is 2~4mm; the hinge 2 is located on one side of the mating edge of the upper cavity 1 and the lower cavity 3. One connecting end of the hinge 2 is fixed to the lower edge of the upper cavity 1, and the other connecting end of the hinge 2 is fixed to the upper edge of the lower cavity 3. The upper cavity 1 and the lower cavity 3 achieve the opening and closing of the circular mounting hole 5 by rotating the hinge 2 around the hinge axis; the lower cavity 3 also includes an oil drain plug 9, which is located at the bottom of the side of the lower cavity side plate 302. A sealing gasket 10 is provided between the oil drain plug 9 and the lower cavity side plate 302.

[0024] Example 6 The engine oil vapor collection device proposed in this embodiment, such as Figure 1As shown, the device includes an upper cavity 1, which is connected to a lower cavity 3 via a hinge 2. The overall longitudinal section of the upper cavity 1 and the lower cavity 3 is teardrop-shaped. It also includes a locking unit 4, which secures the upper cavity 1 and the lower cavity 3 together. The upper cavity 1 includes an upper cavity top plate 101, which has an arched shape. Upper cavity side plates 102 are fixed to both sides of the upper cavity top plate 101, and are connected to the lower cavity 3 via hinges 2. The upper cavity side plates 102 have a fan-shaped structure, with their outer arcs overlapping and fixed to the upper cavity top plate 101. The inner arc of the upper cavity side plates 102 is semi-circular. The inner arc of the upper cavity side plate 102 matches the outer circumferential arc of the engine exhaust pipe; the lower cavity 3 includes a lower cavity bottom plate 301, which has an arched structure, and lower cavity side plates 302 are fixedly connected to both sides of the lower cavity bottom plate 301. The side of the upper cavity top plate 101 is connected to the lower cavity bottom plate 301 via a hinge 2; the lower cavity side plate 302 has a crescent-shaped structure, and its outer arc coincides with and is fixedly connected to the upper cavity side plate 102. The inner arc of the lower cavity side plate 302 is semi-circular, and its inner arc matches the outer circumferential arc of the engine exhaust pipe. The inner arcs of the upper cavity side plate 102 and the lower cavity side plate 302 together form a circular mounting hole. 5. The circular mounting hole 5 is adapted to the engine exhaust pipe; the lower cavity 3 also includes an isolation plate 6, which has an arc-shaped structure and is horizontally set inside the lower cavity 3. The two sides of the isolation plate 6 are tangentially fixed to the inner wall of the lower cavity bottom plate 301, and the two sides of the isolation plate 6 coincide with the two sides of the lower cavity bottom plate 301. The isolation plate 6, the lower cavity bottom plate 301, and the two lower cavity side plates 302 together form an oil storage cavity 7. The isolation plate 6 is evenly provided with a number of oil passage holes 8. The arc-shaped opening direction of the isolation plate 6 is consistent with the arc-shaped opening direction of the lower cavity bottom plate 301. The arc length of the end face of the isolation plate 6 is greater than the end face diameter of the lower cavity bottom plate 301, and the arc length of the end face of the isolation plate 6 is less than the diameter of the lower cavity bottom plate 301. The lower cavity bottom plate 301 has an arc length at the end face; several oil passage holes 8 are arranged in a single row, and several oil passage holes 8 are located at the bottom trough of the isolation plate 6. The diameter of several oil passage holes 8 is 2~4mm; the hinge 2 is located on one side of the mating edge of the upper cavity 1 and the lower cavity 3. One connecting end of the hinge 2 is fixed to the lower edge of the upper cavity 1, and the other connecting end of the hinge 2 is fixed to the upper edge of the lower cavity 3. The upper cavity 1 and the lower cavity 3 achieve the opening and closing of the circular mounting hole 5 by rotating the hinge 2 around the hinge axis; the lower cavity 3 also includes an oil drain plug 9, which is located at the bottom of the side of the lower cavity side plate 302. A sealing gasket 10 is provided between the oil drain plug 9 and the lower cavity side plate 302;The locking unit 4 includes an upper fixing strap 401, both ends of which are fixed to the outer wall of the upper cavity top plate 101. A T-shaped fixing rod 402 is installed in the space formed by the bending of the upper fixing strap 401. The vertical section of the T-shaped fixing rod 402 passes through the upper fixing strap 401. It also includes a lower fixing strap 403, which is correspondingly arranged to the upper fixing strap 401. Both ends of the lower fixing strap 403 are fixed to the outer wall of the lower cavity bottom plate 301. A T-shaped fixing member 404 is installed in the space formed by the bending of the lower fixing strap 403. The T-shaped fixing member 404 has a through hole along its vertical section, through which the T-shaped fixing rod 402 passes. A locking nut 405 is fitted onto the screw at the end of the T-shaped fixing rod 402.

Claims

1. An engine oil gas collection device characterized by, It includes an upper cavity (1), which is connected to a lower cavity (3) via a hinge (2). The overall longitudinal section of the upper cavity (1) and the lower cavity (3) is teardrop-shaped. It also includes a locking unit (4), which is used to fix the upper cavity (1) and the lower cavity (3) together.

2. The engine oil gas collection device of claim 1, wherein, The upper cavity (1) includes an upper cavity top plate (101), which has an arched structure. Upper cavity side plates (102) are fixed to both sides of the upper cavity top plate (101). The sides of the upper cavity top plate (101) are connected to the lower cavity (3) via hinges (2).

3. The engine oil gas collection device of claim 2, wherein, The upper cavity side plate (102) has a fan-shaped structure. The outer arc of the upper cavity side plate (102) coincides with and is fixed to the upper cavity top plate (101). The inner arc of the upper cavity side plate (102) is semi-circular. The inner arc of the upper cavity side plate (102) is adapted to the outer circumference arc of the engine exhaust pipe.

4. The engine oil gas collection device of claim 3, wherein, The lower cavity (3) includes a lower cavity bottom plate (301), which has an arched structure. Lower cavity side plates (302) are fixed to both sides of the lower cavity bottom plate (301). The side of the upper cavity top plate (101) is connected to the lower cavity bottom plate (301) via a hinge (2).

5. The engine oil gas collection device of claim 4, wherein, The lower cavity side plate (302) has a crescent-shaped structure. The outer arc of the lower cavity side plate (302) is fixedly connected to the outer arc of the engine exhaust pipe. The inner arc of the lower cavity side plate (302) is semi-circular. The inner arc of the lower cavity side plate (302) is adapted to the outer circumference arc of the engine exhaust pipe. The inner arc of the upper cavity side plate (102) and the inner arc of the lower cavity side plate (302) together form a circular mounting hole (5). The circular mounting hole (5) is adapted to the engine exhaust pipe.

6. The engine oil gas collection device of claim 5, wherein, The lower cavity (3) also includes an isolation plate (6), which has an arc-shaped structure and is horizontally disposed inside the lower cavity (3). The two sides of the isolation plate (6) are tangentially fixed to the inner wall of the lower cavity bottom plate (301). The two sides of the isolation plate (6) coincide with the two sides of the lower cavity bottom plate (301). The isolation plate (6), the lower cavity bottom plate (301), and the two lower cavity side plates (302) together form an oil storage cavity (7). The isolation plate (6) is uniformly provided with a number of oil passage holes (8). The arc-shaped opening direction of the isolation plate (6) is consistent with the arc-shaped opening direction of the lower cavity bottom plate (301). The arc length of the end face of the isolation plate (6) is greater than the end face diameter of the lower cavity bottom plate (301), and the arc length of the end face of the isolation plate (6) is less than the arc length of the end face of the lower cavity bottom plate (301).

7. The engine oil gas collection device of claim 6, wherein, Several oil passage holes (8) are arranged in a single row, and several oil passage holes (8) are located at the bottom trough of the isolation plate (6). The diameter of several oil passage holes (8) is 2~4mm.

8. The engine oil vapor collection device according to claim 7, characterized in that, The hinge (2) is located on one side of the mating edge of the upper cavity (1) and the lower cavity (3). One end of the hinge (2) is fixed to the lower edge of the upper cavity (1), and the other end of the hinge (2) is fixed to the upper edge of the lower cavity (3). The upper cavity (1) and the lower cavity (3) open and close the circular mounting hole (5) by rotating the hinge (2) around the hinge axis.

9. The engine oil vapor collection device according to claim 8, characterized in that, The lower cavity (3) also includes an oil drain plug (9), which is located at the bottom of the side of the lower cavity side plate (302), and a sealing gasket (10) is provided between the oil drain plug (9) and the lower cavity side plate (302).

10. The engine oil vapor collection device according to claim 9, characterized in that, The locking unit (4) includes an upper fixing strap (401), both ends of which are fixed to the outer wall of the upper cavity top plate (101). A T-shaped fixing rod (402) is installed in the space formed by the bending of the upper fixing strap (401). The vertical section of the T-shaped fixing rod (402) passes through the upper fixing strap (401). The unit also includes a lower fixing strap (403), which is connected to the upper fixing strap (401). A corresponding fixing strap (401) is provided. Both ends of the lower fixing strap (403) are fixed to the outer wall of the lower cavity bottom plate (301). A T-shaped fixing member (404) is installed in the space formed by the bending of the lower fixing strap (403). The T-shaped fixing member (404) has a through hole along its vertical section. The T-shaped fixing rod (402) passes through the through hole. A locking nut (405) is sleeved on the screw at the end of the T-shaped fixing rod (402).

Images