An engine crankcase forced ventilation device

Abstract

The utility model is suitable for flour processing technical field provides a kind of engine crankcase forced ventilation device, including box;Fixed in the oil return port of box bottom, the top of the box is provided with gas outlet, the top of the gas outlet is fixed with first connecting pipe;Filter cartridge is slidably connected in the first connecting pipe inside, the filter cartridge can filter exhaust, the top of the first connecting pipe is fixed with second connecting pipe.The engine crankcase forced ventilation device provided by the scheme, by slidingly connecting connecting ring on the gas outlet of box, then rotating fixed cap and first connecting pipe and second connecting pipe separate, unfasten the fixing between first connecting pipe and second connecting pipe, then the spring of support rod will extend and push up slide bar, then the connecting strip of slide bar top will drive connecting ring to move upwards, to remove filter cartridge connected below connecting ring from gas outlet, to replace filter element inside filter cartridge conveniently.

Description

Technical Field

[0001] This utility model belongs to the field of crankcase technology, and in particular relates to a forced ventilation device for engine crankcase. Background Technology

[0002] The engine crankcase is the core component of an internal combustion engine, located at the bottom of the cylinder block. The crankcase is a hollow structure that houses the crankshaft. Through the connecting rod, it converts the reciprocating motion of the piston into the rotational motion of the crankshaft, outputting power to drive the vehicle. The engine crankcase forced ventilation system (PCV system) is a core component of modern engine exhaust gas treatment. By balancing the pressure inside and outside the crankcase, it prevents damage to the oil pan seals or oil leakage caused by the accumulation of blow-by gas.

[0003] Chinese patent discloses an oil-gas separation device for a forced ventilation system of an engine crankcase, publication number CN 206681815 U. The paper states that "by setting an oil-gas separation device between the crankcase and the intake manifold, the exhaust gas drawn into the intake manifold will become cleaner, greatly reducing the generation of engine oil sludge and carbon deposits. By setting a curved labyrinth-shaped air passage in the oil-gas separation device, oil droplets in the oil and gas can be separated, thereby improving the oil-gas separation rate and reducing the consumption of the filter element."

[0004] However, in the above solution, although the filter element installed inside the exhaust port can filter the gas, it is not possible to remove and replace the internal filter element. Utility Model Content

[0005] This utility model provides a forced ventilation device for engine crankcase, which aims to solve the problem that although the filter element installed inside the exhaust port can filter the gas, it is not easy to remove and replace the internal filter element.

[0006] This utility model is implemented as follows: an engine crankcase forced ventilation device includes a housing; an oil return port fixed to the bottom of the housing, an air outlet provided at the top of the housing, and a first connecting pipe fixed to the top of the air outlet; a filter cartridge slidably connected inside the first connecting pipe, the filter cartridge filtering the exhaust gas; a second connecting pipe fixed to the top of the first connecting pipe, and a connecting ring fixed to the outside of the second connecting pipe; a support rod fixed to the side of the housing, the support rod being able to connect to the connecting ring for easy upward movement of the connecting ring; and a fixing cap threadedly connected to the outside of the second connecting pipe and the first connecting pipe, with an air outlet pipe connected to one side of the top of the fixing cap.

[0007] Preferably, four sets of slots are provided on the side of the first connecting tube. The slots are configured as an eighth-segment fan structure, and the four sets of slots are evenly distributed at equal angles on the first connecting tube.

[0008] Preferably, two sets of connecting strips are symmetrically fixed on the side of the connecting ring, and a sliding rod is vertically fixed to one end of the connecting strip near the support rod.

[0009] Preferably, a second sealing ring is provided at the connection between the bottom of the connecting ring and the air outlet, and a first sealing ring is provided at the connection between the top of the second sealing ring and the fixing cap.

[0010] Preferably, the shape of the second connecting tube is consistent with the shape of the four sets of slots, and the second connecting tube is inserted into the four sets of slots.

[0011] Preferably, the outer surfaces of the second connecting pipe and the first connecting pipe are both provided with threaded structures, and the threaded structures of the second connecting pipe and the first connecting pipe are identical, and the fixing cap is threadedly connected to the second connecting pipe and the first connecting pipe.

[0012] Preferably, a groove is provided at the connection between the support rod and the slide rod, the groove is slidably connected to the slide rod, and a spring is provided inside the groove, the length of the spring being the same as the length of the groove.

[0013] Preferably, the interior of the filter cartridge is filled with a filter element.

[0014] Compared with related technologies, the engine crankcase forced ventilation device provided by this utility model has the following beneficial effects:

[0015] By sliding the connecting ring on the air outlet of the housing, and then rotating the fixing cap to separate it from the first and second connecting pipes, the fixing between the first and second connecting pipes is released. Then the spring of the support rod will extend and push the slide rod upward. Then the connecting bar at the top of the slide rod will drive the connecting ring to move upward, thereby moving the filter cartridge connected below the connecting ring out from the air outlet, making it convenient to replace the filter element inside the filter cartridge. Attached Figure Description

[0016] Figure 1 This is a frontal cross-sectional view of the present invention.

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the connecting ring and air outlet structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the separation structure of the connecting ring and the air outlet of this utility model;

[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of the second connecting pipe of this utility model.

[0021] In the diagram: 1. Housing; 101. Oil return port; 102. Air outlet; 103. First connecting pipe; 104. Slot; 2. Connecting ring; 201. Second connecting pipe; 202. Connecting strip; 203. Slide rod; 3. Support rod; 301. Slide groove; 302. Spring; 4. Filter cartridge; 401. Filter element; 5. Fixing cap; 501. Air outlet pipe; 6. First sealing ring; 7. Second sealing ring. Detailed Implementation

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0023] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. Example 1

[0024] A preferred embodiment of the engine crankcase forced ventilation device provided by this utility model is, for example... Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown: A forced ventilation device for an engine crankcase includes a housing 1; an oil return port 101 fixed to the bottom of the housing 1, an air outlet 102 provided on the top of the housing 1, and a first connecting pipe 103 fixed to the top of the air outlet 102; a filter cartridge 4 slidably connected inside the first connecting pipe 103, the filter cartridge 4 can filter the exhaust gas, a second connecting pipe 201 fixed to the top of the first connecting pipe 103, and a connecting ring 2 fixed to the outside of the second connecting pipe 201; a support rod 3 fixed to the side of the housing 1, the support rod 3 can be connected to the connecting ring 2 to facilitate the upward movement of the connecting ring 2; and a fixing cap 5 threadedly connected to the outside of the second connecting pipe 201 and the first connecting pipe 103, with an air outlet pipe 501 connected to one side of the top of the fixing cap 5.

[0025] It should be noted that although the filter element installed inside the existing exhaust port can filter the gas, it is not necessary to remove and replace the internal filter element.

[0026] In this embodiment, a connecting ring 2 with a second connecting pipe 201 is provided on the filter cartridge 4. When the connecting ring 2 moves upward, it can drive the filter cartridge 4 to move upward, and then the filter element 401 inside the filter cartridge 4 can be taken out and replaced.

[0027] In a further preferred embodiment of the present invention, four sets of slots 104 are provided on the side of the first connecting pipe 103. The slots 104 are configured as one-eighths fan-shaped structures, and the four sets of slots 104 are evenly distributed on the first connecting pipe 103 at equal angles.

[0028] In this embodiment, the second connecting pipe 201 can be easily combined with the first connecting pipe 103 by the slot 104 opened on the first connecting pipe 103, and then it can be fixed by the threaded connection of the fixing cap 5.

[0029] In a further preferred embodiment of the present invention, two sets of connecting strips 202 are symmetrically fixed on the side of the connecting ring 2, and a sliding rod 203 is vertically fixed at one end of the connecting strip 202 near the support rod 3.

[0030] In this embodiment, the connecting bar 202 facilitates the movement of the slide bar 203 to drive the connecting ring 2 upward, making it easy to adjust the height of the connecting ring 2 and to remove the filter cartridge 4.

[0031] In a further preferred embodiment of the present invention, a second sealing ring 7 is provided at the connection between the bottom of the connecting ring 2 and the air outlet 102, and a first sealing ring 6 is provided at the connection between the top of the second sealing ring 7 and the fixing cap 5.

[0032] In this embodiment, the first sealing ring 6 and the second sealing ring 7 are provided to keep the connection between the upper and lower sides of the connecting ring 2 sealed.

[0033] In a further preferred embodiment of the present invention, the shape of the second connecting tube 201 is consistent with the shape of the four sets of slots 104, and the second connecting tube 201 and the four sets of slots 104 are connected by insertion.

[0034] In this embodiment, this facilitates the insertion of the second connecting tube 201 into the slot 104, and makes it easier for the second connecting tube 201 to be combined and connected with the first connecting tube 103.

[0035] In a further preferred embodiment of the present invention, threaded structures are distributed on the outer surfaces of the second connecting pipe 201 and the first connecting pipe 103, and the threaded structures of the second connecting pipe 201 and the first connecting pipe 103 are identical, and the fixing cap 5 is threadedly connected to the second connecting pipe 201 and the first connecting pipe 103.

[0036] In this embodiment, after the second connecting pipe 201 and the first connecting pipe 103 are combined and connected, the fixing cap 5 can be fixed to the outside of the second connecting pipe 201 and the first connecting pipe 103 by rotating the fixing cap 5, thereby completing the fixing of the filter cartridge 4 and the installation of the air outlet pipe 501.

[0037] In a further preferred embodiment of the present invention, a groove 301 is provided at the connection between the support rod 3 and the slide rod 203. The groove 301 and the slide rod 203 are slidably connected. A spring 302 is provided inside the groove 301, and the length of the spring 302 is consistent with the length of the groove 301.

[0038] In this embodiment, the spring 302 inside the slide groove 301 can push the slide rod 203 to slide upward, which in turn can drive the connecting ring 2 to move upward.

[0039] In a further preferred embodiment of the present invention, the filter cartridge 4 is filled with a filter element 401.

[0040] In this embodiment, after the filter cartridge 4 is removed, the filter element 401 inside the filter cartridge 4 can be replaced.

[0041] In summary, the connecting ring 2 is slidably connected to the air outlet 102 of the housing 1. When the filter cartridge 4 needs to be removed, the fixing cap 5 is rotated to separate the fixing cap 5 from the first connecting pipe 103 and the second connecting pipe 201. This will cause the fixing between the first connecting pipe 103 and the second connecting pipe 201 to disappear. Then, the spring 302 of the support rod 3 will extend and push the slide rod 203 upward. Then, the connecting strip 202 at the top of the slide rod 203 will drive the connecting ring 2 to move upward, thereby removing the filter cartridge 4 connected below the connecting ring 2 from the air outlet 102, thus facilitating the replacement of the filter element 401 inside the filter cartridge 4.

[0042] It is worth noting that the circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0043] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative; the division of units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; the indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0044] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A forced ventilation device for an engine crankcase, characterized in that, include: Box (1); The oil return port (101) is fixed at the bottom of the box (1), and the air outlet (102) is provided at the top of the box (1). The first connecting pipe (103) is fixed at the top of the air outlet (102). A filter cartridge (4) is slidably connected inside the first connecting pipe (103). The filter cartridge (4) can filter the exhaust gas. A second connecting pipe (201) is fixed to the top of the first connecting pipe (103). A connecting ring (2) is fixed to the outside of the second connecting pipe (201). The support rod (3) is fixed to the side of the box (1). The support rod (3) can be connected to the connecting ring (2) to facilitate the upward movement of the connecting ring (2). A fixing cap (5) is threaded onto the outside of the second connecting pipe (201) and the first connecting pipe (103), and an air outlet pipe (501) is connected to one side of the top of the fixing cap (5).

2. The engine crankcase forced ventilation device as described in claim 1, characterized in that, The first connecting tube (103) has four sets of slots (104) on its side. The slots (104) are set as one-eighths fan-shaped structures, and the four sets of slots (104) are evenly distributed on the first connecting tube (103) at equal angles.

3. The engine crankcase forced ventilation device as described in claim 1, characterized in that, Two sets of connecting strips (202) are symmetrically fixed on the side of the connecting ring (2), and a sliding rod (203) is vertically fixed at one end of the connecting strip (202) near the support rod (3).

4. The engine crankcase forced ventilation device as described in claim 1, characterized in that, A second sealing ring (7) is provided at the connection between the bottom of the connecting ring (2) and the air outlet (102), and a first sealing ring (6) is provided at the connection between the top of the second sealing ring (7) and the fixing cap (5).

5. The engine crankcase forced ventilation device as described in claim 1, characterized in that, The shape of the second connecting tube (201) is consistent with the shape of the four sets of slots (104), and the second connecting tube (201) and the four sets of slots (104) are connected by insertion.

6. The engine crankcase forced ventilation device as described in claim 1, characterized in that, The outer surfaces of the second connecting pipe (201) and the first connecting pipe (103) are both distributed with threaded structures, and the threaded structures of the second connecting pipe (201) and the first connecting pipe (103) are uniform. The fixing cap (5) is threadedly connected to the second connecting pipe (201) and the first connecting pipe (103).

7. The engine crankcase forced ventilation device as described in claim 1, characterized in that, A groove (301) is provided at the connection between the support rod (3) and the slide rod (203). The groove (301) and the slide rod (203) are slidably connected. A spring (302) is provided inside the groove (301), and the length of the spring (302) is consistent with the length of the groove (301).

8. The engine crankcase forced ventilation device as described in claim 1, characterized in that, The filter cartridge (4) is filled with a filter element (401).

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