CN216342379U

CN216342379U - Crankcase respirator

Info

Publication number: CN216342379U
Application number: CN202123228189.4U
Authority: CN
Inventors: 张敏华
Original assignee: Wuxi H Power Machinery Co ltd
Current assignee: Wuxi H Power Machinery Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-04-19
Anticipated expiration: 2031-12-21

Abstract

The utility model relates to a crankcase respirator, which comprises a sealing ball and a seat body, wherein the seat body is provided with a through hole, the through hole is formed in the vertical direction, the sealing ball is arranged on the top surface of the seat body and used for sealing the through hole, the top surface of the seat body is provided with a limiting part, the limiting part has elasticity, and the limiting part is used for limiting the offset distance of the sealing ball in the vertical direction and the horizontal direction. In this scheme, during the assembly ball sealer, arrange the ball sealer in spacing portion and the extrusion, make spacing portion take place elastic deformation, finally fill in the ball sealer between spacing portion and the pedestal, can accomplish the installation, simplified the mounting means of respirator, be convenient for manufacture.

Description

Crankcase respirator

Technical Field

The utility model relates to the field of crank cases, in particular to a crankcase breather.

Background

A breather is generally installed at a valve cover position of the crankcase, and when the engine is running, a part of exhaust gas (combustible mixture gas or combusted gas) passes through the piston ring and enters the crankcase. As the engine operates, the air pressure within the crankcase varies continuously between positive and negative pressures. When more waste gas exists in the crankcase, the pressure in the crankcase is increased, so that the breather is opened and the waste gas is discharged outwards; when the air pressure in the crankcase is negative pressure, the breather is closed, so that the engine oil in the crankcase is not easy to leak.

The structure of present commonly used respirator mainly comprises barrel and the sealed ball of activity setting in the barrel, and the shaping has the seal receptacle that is used for bearing sealed ball in the barrel, has still inserted the nylon round pin in the barrel, and the nylon round pin inserts the barrel along the horizontal direction to hinder the sealed ball to jump out from the top of barrel. When the pressure in the crankcase becomes high, the sealing ball is jacked up, and the exhaust gas in the crankcase flows out from the gap between the sealing seat and the sealing ball. Such respirators suffer mainly from the following drawbacks:

1. the nylon pin is used for limiting the sealing ball, the nylon pin needs to be inserted during installation, and the nylon pin needs to be limited so as to prevent the nylon pin from falling off, so that the installation mode is not simple and convenient;

2. when the crankcase passes through the outside exhaust waste gas of respirator, can be discharged the machine oil droplet that partly splashes for the crankcase loses machine oil, leads to the crankcase to need regularly replenishing machine oil, and maintain, influence the convenience of using.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide a crankcase breather that solves one or more of the problems of the prior art.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

the utility model provides a crankcase respirator, includes the ball sealer, still includes the pedestal of seting up the through-hole, the through-hole is seted up along vertical direction, the ball sealer sets up the pedestal top surface, the ball sealer is used for sealing the through-hole, the pedestal top surface is equipped with spacing portion, spacing portion has elasticity, spacing portion is used for the restriction the offset distance of ball sealer along vertical direction and along the horizontal direction.

Furthermore, the limiting part comprises a plurality of limiting parts, and the limiting parts are arranged along the circumferential direction of the through hole.

Furthermore, the limiting part comprises a vertical part and a horizontal part, the bottom end of the vertical part is connected with the seat body, and the top end of the vertical part is connected with the horizontal part.

Furthermore, the top surface edge of the horizontal part is provided with an inclined plane, and the inclined plane is arranged on one side, close to the axis of the through hole, of the horizontal part.

Furthermore, the limiting part and the seat body are integrally formed.

Furthermore, the top surface of the seat body is provided with a recessed portion, and the through hole is formed in the bottom end of the recessed portion.

Furthermore, the side wall of the through hole is provided with a groove, and the groove is communicated with the top surface and the bottom surface of the seat body.

Furthermore, the top edge of the through hole is provided with an annular positioning part, and when the sealing ball covers the top end of the through hole, the surface of the sealing ball is attached to the positioning part.

Furthermore, the groove breaks the positioning part, so that a part of the opening at the top end of the groove is exposed when the surface of the sealing ball is attached to the positioning part.

Furthermore, the base, the limiting part and the sealing ball are all made of nylon.

Compared with the prior art, the utility model has the following beneficial technical effects:

the first step, a through hole is formed in the base body, a sealing ball is placed on the base body, a limiting part is arranged on the top surface of the base body and can limit the offset distance of the sealing ball on the base body, when the air pressure in the crankcase is positive pressure, the sealing ball can be blown up and is prevented from falling off by the limiting part, and waste gas in the crankcase can flow out from a gap between the sealing ball and the edge of the top end of the through hole; when atmospheric pressure in the crankcase is the negative pressure, can attract the ball sealer, support the top border of ball sealer and through-hole tightly, guarantee that the machine oil in the crankcase is difficult for leaking, in this scheme, during the assembly ball sealer, arrange the ball sealer in spacing portion and the extrusion, make spacing portion take place elastic deformation, finally fill in the ball sealer between spacing portion and pedestal, can accomplish the installation, simplified the mounting means of respirator, be convenient for manufacture.

And (II) when the air pressure in the crankcase is positive pressure, the sealing ball is blown up, the waste gas in the crankcase flows out from the position between the sealing ball and the top end edge of the through hole, and meanwhile some splashed oil drops are discharged from the position between the sealing ball and the top end edge of the through hole, and a part of the oil drops can be splashed on the side surface of the vertical part and the bottom surface of the horizontal part. The engine oil drops on the side surface of the vertical part and the bottom surface of the horizontal part can be gathered and fall to the top surface of the base body, and when a gap is formed between the sealing ball and the top surface of the through hole, the engine oil falling on the top surface of the base body can flow into the through hole again and return to the crankcase, so that the engine oil loss in the crankcase is reduced.

And thirdly, an inclined plane is arranged on the top surface edge of the horizontal part, the sealing ball is placed on the inclined plane and is extruded, and the sealing ball can directly push the limiting part to deform in the process of moving between the limiting part and the base body, so that the sealing ball is convenient to assemble.

And (IV) the top surface of the base body is provided with the sunken part, the through hole is formed in the bottom surface of the sunken part, when oil drops to the top surface of the base body, oil drops can be collected in the sunken part, and when a gap is formed between the sealing ball and the edge of the top end of the through hole, the collected oil drops flow to the lower part, so that the oil drops flow back to the crankcase, and the loss of the oil in the crankcase is reduced.

Drawings

FIG. 1 shows a schematic view of a crankcase breather in an embodiment of the utility model;

FIG. 2 is a schematic diagram illustrating the seat body, the limiting portion and the sealing ball according to the embodiment of the utility model;

fig. 3 shows an exploded view of fig. 2.

In the drawings, the reference numbers:

1. a base body; 11. a recessed portion; 12. a through hole; 121. a positioning part; 13. a groove; 2. a vertical portion; 21. a horizontal portion; 211. a bevel; 3. and (4) sealing the ball.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, a crankcase breather according to the present invention will be described in detail with reference to the accompanying drawings and the following detailed description. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are all used in a non-precise scale for the purpose of facilitating and distinctly aiding in the description of the embodiments of the present invention. To make the objects, features and advantages of the present invention comprehensible, reference is made to the accompanying drawings. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the implementation conditions of the present invention, so that the present invention has no technical significance, and any structural modification, ratio relationship change or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention.

Examples

Referring to fig. 1 and 2, the present application provides a crankcase respirator, which includes a disc-shaped seat body 1, wherein an axis of the seat body 1 is disposed along a vertical direction, the seat body 1 is further provided with a through hole 12 along the vertical direction, a cross section of the through hole 12 is circular, and the axis of the through hole 12 coincides with an axis of the seat body 1. The top surface of pedestal 1 still is equipped with spacing portion, and spacing portion includes six locating parts, and six locating parts are along pedestal 1's circumference align to grid, and ball sealer 3 has been placed to pedestal 1's top surface, and ball sealer 3 utilizes spacing portion to limit ball sealer 3's skew distance in the space that spacing portion and pedestal 1 enclose, hinders ball sealer 3 to drop from pedestal 1's top surface.

In this embodiment, the seat body 1, the limiting portion and the sealing ball 3 are made of nylon and have a certain elasticity, and each of the limiting members is integrally formed with the seat body 1. In the manufacturing process, the sealing ball 3 needs to be embedded between the limiting part and the seat body 1. When assembling the seal ball 3, firstly put the seal ball 3 on the locating part, the axis of the seal ball 3 is located on the axis of the seat body 1, turn over the locating part back to the axis of the seat body 1, and then extrude the seal ball 3 downwards, so that the seal ball 3 passes through the gap between the locating parts, the seal ball 3 and the locating part move relatively, and finally enter the space enclosed by the locating part and the seat body 1.

Referring to fig. 1 and 2, in particular, the limiting member is L-shaped, and includes a vertical portion 2 and a horizontal portion 21, a bottom end of the vertical portion 2 is connected to a top surface of the seat body 1, and a top end of the vertical portion 2 is connected to a bottom surface of the horizontal portion 21. The side surface of the vertical part 2 close to the axis of the through hole 12 is an arc surface, the axis of the arc surface is superposed with the axis of the through hole 12, and the diameter of the arc surface is smaller than that of the sealing ball 3. The side surface of the vertical part 2 close to the axis of the seat body 1, the bottom surface of the horizontal part 21 and the top surface of the seat body 1 form a space for restraining the sealing ball 3. The top surface of the horizontal part 21 is formed with a slope 211, the slope 211 is arranged at the side of the horizontal part 21 near the axis of the through hole 12, and the edge of the slope 211 near the axis of the through hole 12 is lower than the edge of the other side. When assembling the seal ball 3, place the seal ball 3 on the inclined plane 211 to extrude downwards, the seal ball 3 can directly promote the locating part through the inclined plane 211 to bend and deform in the process of moving to the base body 1, and the operator does not need to turn over the locating part, so that the seal ball 3 can be assembled conveniently.

When the air pressure in the crankcase is positive pressure, the sealing ball 3 is blown up, the exhaust gas in the crankcase flows out from between the sealing ball 3 and the top edge of the through hole 12, and a part of splashed oil drops are discharged from between the sealing ball 3 and the top edge of the through hole 12, wherein some oil drops can splash on the side surface of the vertical part 2 and the bottom surface of the horizontal part 21. The oil drops on the side surface of the vertical part 2 and the bottom surface of the horizontal part 21 are gradually gathered and fall to the top surface of the seat body 1

In this embodiment, the side surface of the vertical portion 2 close to the axis of the seat body 1 is used for limiting the offset distance of the sealing ball 3 along the horizontal direction, and the bottom surface of the horizontal portion 21 is used for limiting the offset distance of the sealing ball 3 along the vertical direction, so as to prevent the sealing ball 3 from falling off from the top surface of the seat body 1 when being blown.

Referring to fig. 2 and fig. 3, further, a circular recess 11 is formed on the top surface of the seat body 1, the axis of the recess 11 coincides with the axis of the through hole 12, and the bottom wall of the recess 11 gradually descends along the direction close to the axis of the recess 11, that is, the lowest position of the bottom of the recess 11 is located at the axis of the recess 11, and the through hole 12 is opened at the lowest position of the recess 11. When the engine oil drops to the top surface of the seat body 1, the engine oil drops can be gathered in the concave part 11 and flow to the lower part of the concave part 11, and when a gap is formed between the sealing ball 3 and the top end edge of the through hole 12, the engine oil drops in the concave part 11 flow back to the crankcase, so that the engine oil loss in the crankcase can be reduced.

Referring to fig. 2 and 3, in order to further improve the sealing performance between the sealing ball 3 and the edge of the top end of the through hole 12, the edge of the top end of the through hole 12 is processed to form an annular positioning portion 121, the positioning portion 121 is a curved surface, and when the sealing ball 3 is placed on the top end of the seat body 1, the outer side surface of the sealing ball 3 is kept in a fit state with the curved surface, so as to close the through hole 12.

Referring to fig. 2 and fig. 3, further, a groove 13 is further formed on the sidewall of the through hole 12, the groove 13 penetrates through the through hole 12 along the vertical direction, and the groove 13 breaks the annular positioning portion 121. When the surface of the sealing ball 3 is attached to the positioning portion 121, a part of the opening of the top end of the groove 13 is exposed, that is, a gap is formed between the edge of the top end of the groove 13 and the sealing ball 3. After the engine oil drops are gathered in the concave part 11, when the air pressure in the crankcase is negative pressure, the surface of the sealing ball 3 is kept attached to the positioning part 121, the engine oil at the opening at the top end of the groove 13 can be directly sucked into the crankcase by utilizing the negative pressure in the crankcase, and the recovery efficiency of the engine oil in the concave part 11 is improved.

The working principle is as follows:

when assembling the respirator, the sealing ball 3 is placed on the top surface of the limiting portion, and each limiting member supports the sealing ball 3 through the inclined surface 211. Extrude sealed ball 3 along vertical direction downwards, promote each locating part elastic deformation, finally fill in sealed ball 3 between spacing portion and pedestal 1, can accomplish the installation, simplified the mounting means of respirator, be convenient for manufacture. When the air pressure in the crankcase is positive pressure, the sealing ball 3 is blown up, the limiting part prevents the sealing ball 3 from falling off, and the waste gas in the crankcase can flow out from a gap between the sealing ball 3 and the edge of the top end of the through hole 12; when the air pressure in the crankcase is negative pressure, the sealing ball 3 is attracted, the sealing ball 3 is tightly abutted against the top edge of the through hole 12 and splashed on the limiting part, and the engine oil gathered on the top surface of the seat body 1 is sucked into the groove 13 and is replenished into the crankcase again, so that the loss of the engine oil in the crankcase can be reduced.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a crankcase respirator, includes ball sealer, its characterized in that: the sealing device is characterized by further comprising a base body with a through hole, the through hole is formed in the vertical direction, the sealing ball is arranged on the top surface of the base body and used for sealing the through hole, a limiting portion is arranged on the top surface of the base body and has elasticity, and the limiting portion is used for limiting the offset distance of the sealing ball in the vertical direction and in the horizontal direction.

2. A crankcase breather according to claim 1, wherein: the limiting part comprises a plurality of limiting parts, and the limiting parts are arranged along the circumferential direction of the through hole.

3. A crankcase breather according to claim 2, wherein: the limiting piece comprises a vertical part and a horizontal part, the bottom end of the vertical part is connected with the base body, and the top end of the vertical part is connected with the horizontal part.

4. A crankcase breather according to claim 3, wherein: the top surface edge of horizontal part is equipped with the inclined plane, the inclined plane is seted up the horizontal part is close to one side of through-hole axis.

5. A crankcase breather according to claim 3, wherein: the limiting piece and the seat body are integrally formed.

6. A crankcase breather according to claim 1, wherein: the top surface of pedestal is equipped with the depressed part, the through-hole is seted up the bottom of depressed part.

7. A crankcase breather according to claim 1, wherein: the side wall of the through hole is provided with a groove, and the groove is communicated with the top surface and the bottom surface of the seat body.

8. A crankcase breather according to claim 7, wherein: the top edge of the through hole is provided with an annular positioning part, and when the sealing ball covers the top end of the through hole, the surface of the sealing ball is attached to the positioning part.

9. A crankcase breather according to claim 8, wherein: the groove breaks the positioning part, so that a part of the opening at the top end of the groove is exposed when the surface of the sealing ball is attached to the positioning part.

10. A crankcase breather according to claim 1, wherein: the base body, the limiting part and the sealing ball are all made of nylon.