Oil-gas separator and automobile

Abstract

The invention provides an oil-gas separator and an automobile, and belongs to the technical field of automobile parts, the oil-gas separator comprises a base, a first mounting cavity is formed in the base, and a first connecting plane is arranged at a cavity opening of the first mounting cavity; one end of the oil-gas separation mechanism is embedded in the first mounting cavity; a second mounting cavity is formed in one end of the driving mechanism, the other end of the driving mechanism is located outside the first mounting cavity, a second connecting plane is arranged between the two ends of the driving mechanism, a flexible positioning part is arranged on the driving mechanism, and the deformation displacement of the flexible positioning part is equal to the difference value of the axis of the first mounting cavity and the axis of the second mounting cavity; and the base, the oil-gas separation mechanism and the driving mechanism are coaxially arranged. Errors caused by assembling or machining are eliminated through the flexible positioning part, the assembling coaxiality of the base, the oil-gas separation mechanism and the driving mechanism is guaranteed, noise is eliminated, and the service life of the oil-gas separation mechanism is prolonged.

Description

Technical Field

[0001] The present invention belongs to the technical field of automotive parts, relates to an oil-gas separator, and particularly relates to an automobile having the oil-gas separator. Background Art

[0002] In the prior art, when the engine is running, a small amount of gas (referred to as blow-by gas) in the combustion chamber will leak into the crankcase through the piston rings. These gases contain oil mist and other particulate pollutants. If not treated, they will not only affect the performance of the engine, but also increase emission pollution. Therefore, in order to solve this oil-gas mixture, an oil-gas separator is installed on the engine to separate the oil molecules from the gas molecules, and the separated oil is re-flowed back into the engine for reuse, and other gases enter the combustion chamber through the gas outlet end to participate in combustion again.

[0003] However, in the assembly process of the existing oil-gas separator, it is generally achieved through static positioning structures such as positioning holes and positioning posts. In order to ensure the smooth connection between the positioning holes and the positioning posts, the fit between the positioning holes and the positioning posts is a clearance fit. The existence of the clearance will cause deviation in the coaxiality between the various components in the entire oil-gas separator, and the coaxial setting cannot be truly achieved, resulting in abnormal noise during the operation of the oil-gas separator, thereby shortening the service life of the product. Summary of the Invention

[0004] The purpose of the present invention is to address the above problems existing in the prior art and propose an oil-gas separator that can reduce noise and extend the service life.

[0005] The purpose of the present invention can be achieved by the following technical solutions: An oil-gas separator, comprising: A base, on which a first installation cavity is provided, a first connection plane is provided at the opening of the first installation cavity, and an installation plane for fixing the base is provided on the base, wherein the first connection plane and the installation plane form a preset angle; An oil-gas separation mechanism, one end of which is embedded in the first installation cavity, and the oil-gas separation mechanism realizes oil-gas separation by means of centrifugal rotation, wherein the axis of the oil-gas separation mechanism is coaxially arranged with the axis of the first installation cavity; A driving mechanism, one end of which extends into the first installation cavity and is provided with a second installation cavity nested with the other end of the oil-gas separation mechanism, the other end of the driving mechanism is located outside the first installation cavity, and a second connection plane is provided between the two ends of the driving mechanism. The driving mechanism is fixed to the base through the connection between the first connection plane and the second connection plane. A flexible positioning portion is provided on the driving mechanism, and the deformation displacement of the flexible positioning portion is equal to the difference between the axes of the first installation cavity and the second installation cavity, so as to coaxially arrange the base, the oil-gas separation mechanism and the driving mechanism.

[0006] In the above oil-gas separator, the flexible positioning part includes a concave cavity, and the concave cavity is arranged on the outer side wall of the driving mechanism, and a deformable elastic member is filled in the concave cavity. Wherein, the side wall of the elastic member is higher than the side where the cavity opening of the concave cavity is located. After the base is connected to the driving mechanism, the inner and outer side walls of the elastic member respectively abut against the bottom of the concave cavity and the wall of the first accommodating cavity.

[0007] In the above oil-gas separator, the concave cavity is arranged in a ring shape or an arc shape, and the corresponding elastic member is arranged in a ring shape or an arc shape.

[0008] In the above oil-gas separator, when the concave cavity is arranged in an arc shape and the number of the concave cavities is one, the arc-shaped concave cavity is arranged at any position on the outer side wall of the driving mechanism.

[0009] In the above oil-gas separator, when the concave cavity is arranged in an arc shape and the number of the concave cavities is multiple, the multiple arc-shaped concave cavities are annularly distributed along the axis direction of the driving mechanism, and two adjacent arc-shaped concave cavities are separated by the outer side wall of the driving mechanism, or the multiple arc-shaped concave cavities are arranged side by side along the axis direction of the driving mechanism, and two adjacent arc-shaped concave cavities are separated by the outer side wall of the driving mechanism.

[0010] In the above oil-gas separator, a pre-positioning part is further arranged between the base and the driving mechanism, and the pre-positioning part includes a positioning convex part and a positioning concave part. Wherein, the positioning convex part is arranged on the base, and the positioning concave part is arranged on the driving mechanism. Through the concave-convex fit between the positioning concave part and the positioning convex part, the positioning connection between the base and the driving mechanism is realized.

[0011] In the above oil-gas separator, the positioning convex part is arranged on the first connection plane, the positioning concave part is arranged on the second connection plane and penetrates through the second connection plane. Wherein, the positioning convex part is arranged in a column shape, and the positioning concave part is arranged in a circular shape.

[0012] In the above oil-gas separator, the number of the positioning convex parts is at least two, and the number of the positioning concave parts is also at least two. Wherein, when the numbers of the positioning convex parts and the positioning concave parts are both two, the two positioning convex parts and the two positioning concave parts are respectively arranged diagonally; when the numbers of the positioning convex parts and the positioning concave parts are both three, the three positioning convex parts and the three positioning concave parts are respectively arranged in a triangular distribution.

[0013] In the above oil-gas separator, the positioning concave part includes a positioning lug formed by extending outward from the outer side wall of the driving mechanism, and a positioning hole is arranged on the positioning lug. Wherein, the positioning hole is in plug-in fit with the positioning convex part.

[0014] In the above-mentioned oil-gas separator, it further includes a first connecting lug formed by extending outward from the outer sidewall of the driving mechanism, and a first connecting hole is provided on the first connecting lug, a second connecting lug formed by extending outward from the outer sidewall of the base, and a second connecting hole is provided on the second connecting lug. When the driving mechanism is connected to the base, the first connecting hole is aligned with the second connecting hole, and the connection between the two is fixed by a fastener.

[0015] In the above-mentioned oil-gas separator, the positioning lug is integrally provided with the corresponding first connecting lug, and the positioning convex part is provided on the corresponding second connecting lug.

[0016] In the above-mentioned oil-gas separator, one end of the base far from the first accommodating cavity extends outward along the outer contour of the base to form a mounting platform, and the mounting plane is located on the mounting platform. Among them, a plurality of connecting pieces are provided on the mounting platform.

[0017] In the above-mentioned oil-gas separator, a first flange, a smooth shaft section and a threaded section are provided on the connecting piece along the axial direction of the connecting piece. Among them, the outer diameter of the first flange is larger than the diameter of the insertion hole on the mounting platform that is inserted and matched with the connecting piece.

[0018] In the above-mentioned oil-gas separator, an annular protrusion is provided along the edge of the insertion hole on the mounting platform. When the connecting piece is connected in place, the first flange abuts against the annular protrusion.

[0019] In the above-mentioned oil-gas separator, a second flange is further provided between the smooth shaft section and the threaded section, and the length between the lower surface of the first flange and the lower surface of the second flange is equal to the depth of the insertion hole.

[0020] The present invention also provides an oil-gas separator, including the above-mentioned oil-gas separator.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: (1). An oil-gas separator provided by the present invention eliminates the error formed due to assembly or processing through the flexible positioning part, ensures the coaxiality of the assembly of the base, the oil-gas separation mechanism and the driving mechanism, eliminates noise, and improves the service life of the oil-gas separation mechanism; (2). The annular elastic member can not only be used as the displacement difference eliminated in the flexible positioning part due to assembly error or processing error, but also has a sealing function, avoiding the overflow of the oil liquid and gas generated after the separation of the oil-gas separation mechanism from the connection between the base and the driving mechanism, and improving the sealing effect of the entire oil-gas separator; (3) Divide the annular cavity into multiple arc-shaped cavities distributed in a ring shape, and fill each arc-shaped cavity with an arc-shaped elastic member. The advantage of this setting is that when all the arc-shaped elastic members are inserted into the corresponding arc-shaped cavities, if the coaxiality between the base and the driving mechanism still cannot be ensured after the base is connected to the driving mechanism, at this time, one or several of the multiple arc-shaped elastic members can be replaced to achieve the coaxiality after the base is connected to the driving mechanism, without replacing the entire annular elastic member, thereby reducing the replacement cost and making the use more flexible. (4) By setting the first flange, the contact area between the connecting member and the installation platform is increased, and the stability of the base during fixation is improved. In addition, by setting the first flange, the washer can be omitted. On the one hand, the cost is reduced, and on the other hand, the situation of missing the installation of the washer is avoided, and the reliability of the base installation is improved. (5) By setting an annular protrusion at the edge of the insertion hole, on the one hand, the strength of this position is improved, and on the other hand, after the connecting member is tightened, deformation will not occur at this position, thereby improving the reliability of the base fixation. (6) The length between the lower surface of the first flange and the lower surface of the second flange is equal to the depth of the insertion hole. Such a setting, on the one hand, disperses the fastening force generated between the connecting member and the base to between the first flange and the installation platform, and between the second flange and the connection position of the base, thereby improving the installation reliability of the base while avoiding deformation of the installation platform. Brief Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of an oil-gas separator of the present invention.

[0023] Figure 2 It is a schematic structural diagram of the driving mechanism in a preferred embodiment of the present invention.

[0024] Figure 3 It is a schematic structural diagram of another perspective of the driving mechanism in a preferred embodiment of the present invention.

[0025] Figure 4 is Figure 3 The sectional view of the shown driving mechanism along the cutting line A-A.

[0026] Figure 5 It is a schematic structural diagram of the oil-gas separation mechanism in a preferred embodiment of the present invention.

[0027] Figure 6 It is a schematic structural diagram of the base in a preferred embodiment of the present invention.

[0028] Figure 7 It is a schematic structural diagram of the connecting member in a preferred embodiment of the present invention.

[0029] In the figure, 100 is the base; 110 is the first installation cavity; 120 is the first connection plane; 130 is the positioning convex part; 140 is the second connection lug; 141 is the second connection hole; 150 is the installation platform; 151 is the installation plane; 152 is the insertion hole; 153 is the annular protrusion. 200 is the oil-gas separation mechanism; 210 is the bearing; 220 is the first connection end; 230 is the second connection end; 240 is the oil-gas separation component. 300 is the driving mechanism; 310 is the second installation cavity; 320 is the second connection plane; 330 is the flexible positioning part; 331 is the concave cavity; 332 is the elastic part; 340 is the positioning concave part; 341 is the positioning lug; 342 is the positioning hole; 350 is the first connection lug; 351 is the first connection hole. 400 is the connecting piece; 410 is the first flange; 420 is the optical axis section; 430 is the threaded section; 440 is the second flange. Specific embodiments

[0030] The following are specific embodiments of the present invention and, in conjunction with the accompanying drawings, further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0032] As Figures 1 to 7 shown, an oil-gas separator provided by the present invention includes: A base 100, on which a first installation cavity 110 is provided, and a first connection plane 120 is provided at the cavity opening of the first installation cavity 110, and an installation plane 151 for fixing the base 100 is provided on the base 100, wherein the first connection plane 120 and the installation plane 151 form a preset angle; An oil-gas separation mechanism 200, one end of which is embedded in the first installation cavity 110, and the oil-gas separation mechanism 200 realizes oil-gas separation by means of centrifugal rotation, wherein the axis of the oil-gas separation mechanism 200 is coaxially arranged with the axis of the first installation cavity 110; The driving mechanism 300 has one end extending into the first installation cavity 110 and is provided with a second installation cavity 310 which is nested and connected to the other end of the oil-gas separation mechanism 200. The other end of the driving mechanism 300 is located outside the first installation cavity 110, and a second connection plane 320 is provided between the two ends of the driving mechanism 300. The driving mechanism 300 is fixed to the base 100 through the connection between the first connection plane 120 and the second connection plane 320. Among them, a flexible positioning portion 330 is provided on the driving mechanism 300, and the deformation displacement of the flexible positioning portion 330 is equal to the difference between the axes of the first installation cavity 110 and the second installation cavity 310, so as to promote the coaxial arrangement of the base 100, the oil-gas separation mechanism 200 and the driving mechanism 300.

[0033] It is worth mentioning that the two ends of the oil-gas separation mechanism 200 are respectively a first connection end 220 and a second connection end 230, and an oil-gas separation component 240 located between the first connection end 220 and the second connection end 230. The first connection end 220 is rotatably connected to the base 100, and the second connection end 230 is rotatably connected to the driving mechanism 300. The oil-gas separation mechanism 200 is limited between the base 100 and the driving mechanism 300 through the locking between the base 100 and the driving mechanism 300, and the driving mechanism 300 causes the oil-gas separation mechanism 200 to rotate circumferentially.

[0034] Furthermore, in order to ensure that the oil-gas separation mechanism 200 does not shake or move during rotation, a bearing 210 can be provided at the bottom of the first installation cavity 110 and the bottom of the second installation cavity 310 respectively. Among them, the first connection end 220 and the second connection end 230 on the oil-gas separation mechanism 200 are respectively nested and connected to the corresponding bearings 210.

[0035] In this embodiment, by providing the bearings 210, on the one hand, the wear of the first connection end 220 and the second connection end 230 is reduced, and the service life of the oil-gas separation mechanism 200 is extended. On the other hand, the limit of the installation of the oil-gas separation mechanism 200 can be realized, preventing the oil-gas separation mechanism 200 from moving during operation, and improving the smoothness and stability of the operation of the oil-gas separation mechanism 200.

[0036] It is worth mentioning that there are generally the following several ways to install the bearings 210: First, the two bearings 210 are respectively installed on the base 100 and the driving mechanism 300. At this time, the two ends of the oil-gas separation mechanism 200 are respectively nested and matched with the corresponding bearings 210. Second, the two bearings 210 are respectively nested and connected to the first connection end 220 and the second connection end 230. At this time, sunken cavities for nesting the corresponding bearings 210 are respectively provided at the bottom of the first installation cavity 110 and the bottom of the second installation cavity 310, so that the two bearings 210 are respectively embedded into the corresponding sunken cavities. Thirdly, install one of the two bearings 210 on the base 100 or the driving mechanism 300, and nest the other bearing 210 on the oil-gas separation mechanism 200. That is, when one of the two bearings 210 is installed on the base 100, the other bearing 210 is nested on the second connection end 230 of the oil-gas separation mechanism 200; when one of the two bearings 210 is installed on the driving mechanism 300, the other bearing 210 is nested on the first connection end 220 of the oil-gas separation mechanism 200.

[0037] For the above three methods, if the first method is adopted, that is, the two bearings 210 are respectively installed on the base 100 and the driving mechanism 300. At this time, the axis of the bearing 210 located on the base 100 is coaxially arranged with the axis of the first installation cavity 110, and the axis of the bearing 210 located on the driving mechanism 300 is coaxially arranged with the axis of the second installation cavity 310. However, due to assembly errors or processing errors, when the base 100 is connected to the driving mechanism 300, it cannot be guaranteed that the axis of the first installation cavity 110 and the axis of the second installation cavity 310 are collinear. When the two ends of the oil-gas separation mechanism 200 are respectively connected to the corresponding bearings 210, it cannot be guaranteed that the axis of the oil-gas separation mechanism 200 is collinear with the axis of the base 100 and the axis of the driving mechanism 300. It may be collinear with one of them, which will cause the axis of the oil-gas separation mechanism 200 to be obliquely arranged. When the oil-gas separation mechanism 200 rotates, on the one hand, abnormal noises will be generated, on the other hand, the oil-gas separation effect may be reduced, and the service life of the oil-gas separation mechanism 200 will also be shortened.

[0038] If the second method is adopted, that is, the two bearings 210 are respectively embedded in the first connection end 220 and the second connection end 230. Such a connection method can ensure the coaxiality between the oil-gas separation mechanism 200 and the bearing 210. However, in order to install the bearing 210, a structure for fixing the bearing 210 must be provided in the first installation cavity 110 and the second installation cavity 310. A simple operation is to set the first installation cavity 110 and the second installation cavity 310 as a stepped structure, that is, a sunken cavity is provided at the bottom of the first installation cavity 110 and the second installation cavity 310, and the bearing 210 is embedded in the sunken cavity. However, when the base 100 is connected to the driving mechanism 300, it cannot be guaranteed that the axis of the sunken cavity on the base 100 is collinear with the axis of the sunken cavity on the driving mechanism 300. There is still a situation where the axis of the oil-gas separation mechanism 200 is not collinear with the axis of the base 100 and the axis of the driving mechanism 300.

[0039] If the third method is adopted, when one of the two bearings 210 is installed in the base 100 and the other bearing 210 is nested on the oil-gas separation mechanism 200, the axis of the base 100 and the axis of the oil-gas separation mechanism 200 are collinear, but not necessarily collinear with the axis of the drive mechanism 300. Similarly, when one of the two bearings 210 is installed in the drive mechanism 300 and the other bearing 210 is nested on the oil-gas separation mechanism 200, the axis of the drive mechanism 300 and the axis of the oil-gas separation mechanism 200 are collinear, but not necessarily collinear with the axis of the base 100.

[0040] Therefore, no matter which method is adopted, there will be a phenomenon of non-coaxiality. Therefore, an oil-gas separator provided by the present invention eliminates the error formed due to assembly or processing through the flexible positioning portion 330, ensures the coaxiality of the assembly of the base 100, the oil-gas separation mechanism 200, and the drive mechanism 300, eliminates noise, and improves the service life of the oil-gas separation mechanism 200.

[0041] In addition, it is worth mentioning that although the oil-gas separation component 240 is located between the first connection end 220 and the second connection end 230, it is close to one end and far from the other end. For example, in this embodiment, the oil-gas separation component 240 is close to the first connection end 220 and far from the second connection end 230. Therefore, the first installation cavity 110 needs to accommodate the oil-gas separation component 240, and the separation of oil and gas is also completed in the first installation cavity 110, so that the cross-sectional area of the first installation cavity 110 is larger than the cross-sectional area of the second installation cavity 310.

[0042] Furthermore, it is pointed out that the drive mechanism 300 drives the rotation of the oil-gas separation mechanism 200 by generating an alternating magnetic field with an energized coil, and then drives the oil-gas separation mechanism 200 to perform circumferential rotation.

[0043] Preferably, the flexible positioning portion 330 includes a concave cavity 331, and the concave cavity 331 is provided on the outer side wall of the drive mechanism 300, and a deformable elastic member 332 is filled in the concave cavity 331. Among them, the side wall of the elastic member 332 is higher than the side where the cavity opening of the concave cavity 331 is located. When the base 100 is connected to the drive mechanism 300, the inner and outer side walls of the elastic member 332 are respectively in contact with the bottom of the concave cavity 331 and the cavity wall of the first installation cavity 110.

[0044] In this embodiment, after the base 100 is connected to the driving mechanism 300, due to the existence of assembly errors or machining errors, there is a corresponding displacement error between the axis of the base 100 and the axis of the driving mechanism 300. At this time, the deformation of the elastic member 332 can compensate for this displacement error, thereby ensuring the coaxiality of the base 100 and the driving mechanism 300 after assembly, and further realizing the coaxiality of the base 100, the driving mechanism 300, and the oil-gas separation mechanism 200.

[0045] It is further pointed out that the concave cavity 331 can be arranged in a ring shape or an arc shape, and the corresponding elastic member 332 is arranged in a ring shape or an arc shape.

[0046] It is worth mentioning that when the concave cavity 331 is arranged in a ring shape, that is, a ring-shaped concave cavity is formed, the corresponding elastic member 332 is a ring-shaped elastic member, and the ring-shaped concave cavity and the ring-shaped elastic member are nested and matched. At this time, the ring-shaped elastic member can not only be used as the flexible positioning part 330 to eliminate the displacement difference formed due to assembly errors or machining errors, but also has a sealing function to prevent the oil and gas separated by the oil-gas separation mechanism 200 from overflowing from the connection between the base 100 and the driving mechanism 300, improving the sealing effect of the entire oil-gas separator.

[0047] When the concave cavity 331 is arranged in an arc shape, the number of the concave cavities 331 can be one or more. When the number of the concave cavities 331 is one, the arc-shaped concave cavity can be arranged at any position on the outer side wall of the driving mechanism 300, as long as both sides of the arc-shaped elastic member located in the arc-shaped concave cavity can abut against the bottom of the arc-shaped concave cavity and the wall of the first installation cavity 110.

[0048] When the concave cavity 331 is arranged in an arc shape and the number is multiple, multiple arc-shaped concave cavities can be annularly distributed along the axis direction of the driving mechanism 300, and adjacent two arc-shaped concave cavities are separated by the outer side wall of the driving mechanism 300. Or multiple arc-shaped concave cavities can be arranged side by side along the axis direction of the driving mechanism 300, and adjacent two arc-shaped concave cavities are separated by the outer side wall of the driving mechanism 300.

[0049] It is worth mentioning that the concave cavity 331 on the outer side wall of the driving mechanism 300 is formed by the outer side wall of the driving mechanism 300 being recessed radially.

[0050] In this embodiment, the annular cavity is divided into a plurality of arc-shaped cavities distributed in a ring shape, and arc-shaped elastic members are filled in each arc-shaped cavity. The advantage of this setting is that after all the arc-shaped elastic members are embedded in the corresponding arc-shaped cavities, if the coaxiality between the base 100 and the driving mechanism 300 still cannot be ensured after the base 100 is connected to the driving mechanism 300, at this time, one or several of the plurality of arc-shaped elastic members can be replaced to achieve the coaxiality after the base 100 is connected to the driving mechanism 300, without replacing the entire annular elastic member, thereby reducing the replacement cost and making the use more flexible.

[0051] Preferably, a pre-positioning portion is further provided between the base 100 and the driving mechanism 300, and the pre-positioning portion includes a positioning convex portion 130 and a positioning concave portion 340. Among them, the positioning convex portion 130 is provided on the base 100, and the positioning concave portion 340 is provided on the driving mechanism 300. Through the concave-convex cooperation between the positioning concave portion 340 and the positioning convex portion 130, the positioning connection between the base 100 and the driving mechanism 300 is realized.

[0052] It is worth mentioning that the positions of the positioning concave portion 340 and the positioning convex portion 130 can be interchanged, that is, the positioning convex portion 130 is provided on the driving mechanism 300, and the positioning concave portion 340 is provided on the base 100.

[0053] Furthermore, it is pointed out that the positioning convex portion 130 and the positioning concave portion 340 can be respectively formed on the base 100 and the driving mechanism 300, that is, the positioning convex portion 130 is integrally provided with the base 100, and the positioning concave portion 340 is integrally provided with the driving mechanism 300. Or one of the positioning convex portion 130 and the positioning concave portion 340 is formed on the corresponding structure, and the other is provided separately. For example, positioning concave portions 340 are provided on both the base 100 and the driving mechanism 300. When the base 100 is connected to the driving mechanism 300, the positioning concave portion 340 on the base 100 is aligned with the positioning concave portion 340 on the driving mechanism 300, and then the positioning convex portion 130 passes through the positioning concave portion 340 on the base 100 and the positioning concave portion 340 on the driving mechanism 300 and is fixed to the positioning concave portion 340 on the base 100 or fixed to the positioning concave portion 340 on the driving mechanism 300.

[0054] Further explanation, the positioning recess 340 is set as a connecting hole, namely the first connecting hole 351 and the second connecting hole 141 respectively. The first connecting hole 351 is arranged on the base 100, and the second connecting hole 141 is arranged on the driving mechanism 300. Among them, one of the first connecting hole 351 and the second connecting hole 141 is arranged in a columnar shape, and the other is arranged in a conical shape. The positioning protrusion 130 is a plug. When the first connecting hole 351 is arranged in a columnar shape and the second connecting hole 141 is arranged in a conical shape, the plug is inserted from the first connecting hole 351 and fixed in the second connecting hole 141; when the first connecting hole 351 is arranged in a conical shape and the second connecting hole 141 is arranged in a columnar shape, the plug is inserted from the second connecting hole 141 and fixed in the first connecting hole 351.

[0055] It is worth mentioning that in this embodiment, the positioning recess 340 is arranged on the driving mechanism 300, and the positioning protrusion 130 is arranged on the base 100. Moreover, the positioning recess 340 is integrally formed on the driving mechanism 300, and the positioning protrusion 130 is integrally formed on the base 100.

[0056] Furthermore, the positioning protrusion 130 is arranged on the first connecting plane 120, and the positioning recess 340 is arranged on the second connecting plane 320 and penetrates through the second connecting plane 320. Among them, the positioning protrusion 130 is arranged in a columnar shape, and the positioning recess 340 is arranged in a circular shape.

[0057] Furthermore, the number of the positioning protrusions 130 is at least two. Similarly, the number of the positioning recesses 340 is also at least two. When the numbers of the positioning protrusions 130 and the positioning recesses 340 are both two, the two positioning protrusions 130 and the two positioning recesses 340 are respectively arranged diagonally; when the numbers of the positioning protrusions 130 and the positioning recesses 340 are both three, the three positioning protrusions 130 and the three positioning recesses 340 are respectively distributed in a triangular shape.

[0058] Preferably, the positioning recess 340 includes a positioning lug 341 formed by extending outward from the outer side wall of the driving mechanism 300, and a positioning hole 342 is arranged on the positioning lug 341. Among them, the positioning hole 342 is in plug-in fit with the positioning protrusion 130.

[0059] Preferably, it further includes a first connecting lug 350 formed by extending outward from the outer side wall of the driving mechanism 300, and a first connecting hole 351 is arranged on the first connecting lug 350, a second connecting lug 140 formed by extending outward from the outer side wall of the base 100, and a second connecting hole 141 is arranged on the second connecting lug 140. When the driving mechanism 300 is connected to the base 100, the first connecting hole 351 and the second connecting hole 141 are aligned, and the connection between the two is fixed by a fastener.

[0060] It is worth mentioning that, for the sake of structural simplification, the positioning lug 341 can be integrally provided with the first connecting lug 350 at the corresponding position. At the same time, the positioning convex part 130 can be provided on the corresponding second connecting lug 140.

[0061] Preferably, at one end of the base 100 away from the first installation cavity 110 and extending outward along the outer contour of the base 100, an installation platform 150 is formed, and the installation plane 151 is located on the installation platform 150. Among them, a plurality of connecting pieces 400 are provided on the installation platform 150.

[0062] In the prior art, when fixing a structure with fasteners, the general method is to fill a sleeve in the through hole connected by the fastener, and a washer is nested at one end where the fastener contacts the object to be connected. However, such a connection method is not only troublesome but also increases the cost of the product.

[0063] In this embodiment, there is no need to set a sleeve and a washer. The installation of the base 100 can be directly completed through the connecting piece 400, which is convenient and reliable to operate, and correspondingly reduces the production cost of the product.

[0064] Furthermore, a first flange 410, a smooth shaft section 420, and a threaded section 430 are provided on the connecting piece 400 along the axial direction of the connecting piece 400. Among them, the outer diameter of the first flange 410 is larger than the diameter of the insertion hole 152 on the installation platform 150 that is inserted and matched with the connecting piece 400.

[0065] In this embodiment, by setting the first flange 410, the contact area between the connecting piece 400 and the installation platform 150 is increased, and the stability of the base 100 during fixation is improved. In addition, by setting the first flange 410, the washer can be omitted, which reduces the cost on the one hand and avoids the situation of missing the washer installation on the other hand, improving the reliability of the installation of the base 100.

[0066] Furthermore, an annular protrusion 153 is provided on the installation platform 150 along the edge of the insertion hole 152. When the connecting piece 400 is connected in place, the first flange 410 abuts against the annular protrusion 153.

[0067] In this embodiment, by setting the annular protrusion 153 on the edge of the insertion hole 152, on the one hand, the strength of this position is improved, and on the other hand, the connecting piece 400 will not cause deformation at this position after being tightened, thereby improving the reliability of the fixation of the base 100.

[0068] It is further pointed out that a second flange 440 is also provided between the optical axis section 420 and the threaded section 430, and the length between the lower surface of the first flange 410 and the lower surface of the second flange 440 is equal to the depth of the insertion hole 152. That is, when the connector 400 is installed in place, the lower surface of the second flange 440 is flush with the installation plane 151.

[0069] In this embodiment, the length between the lower surface of the first flange 410 and the lower surface of the second flange 440 is equal to the depth of the insertion hole 152. With this setting, on the one hand, the fastening force generated between the connector 400 and the base 100 is dispersed between the first flange 410 and the installation platform 150, and between the connection position of the second flange 440 and the base 100, thereby improving the installation reliability of the base 100 while avoiding deformation of the installation platform 150.

[0070] It should be noted that in the present invention, descriptions such as "first", "second", "one", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined. Terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] In addition, the technical solutions between various embodiments of the present invention can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0072] The specific embodiments described herein are only illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An oil-gas separator, characterized in that: include: A base, on which a first mounting cavity is disposed, and a first connecting plane is disposed at the cavity opening of the first mounting cavity, and a mounting plane for fixing the base is disposed on the base, wherein the first connecting plane and the mounting plane form a preset angle; An oil-gas separation mechanism, one end of which is embedded in the first installation cavity, and the oil-gas separation mechanism realizes oil-gas separation by centrifugal rotation, wherein the axis of the oil-gas separation mechanism is coaxially arranged with the axis of the first installation cavity; A driving mechanism, one end of which extends into the first mounting cavity and is provided with a second mounting cavity which is nested and connected with the other end of the oil-gas separation mechanism, the other end of the driving mechanism is located outside the first mounting cavity, and a second connecting plane is provided between the two ends of the driving mechanism, and the fixing of the driving mechanism and the base is completed by the connection between the first connecting plane and the second connecting plane, wherein a flexible positioning portion is provided on the driving mechanism, and the deformation displacement of the flexible positioning portion is equal to the difference between the axes of the first mounting cavity and the second mounting cavity, thereby causing the base, the oil-gas separation mechanism and the driving mechanism to be coaxially arranged.

2. The oil-gas separator according to claim 1, characterized in that: The flexible positioning portion includes a concave cavity, and the concave cavity is arranged on the outer wall of the driving mechanism, and is filled with a deformable elastic member, wherein the side wall of the elastic member is higher than the side where the cavity mouth is located. When the base is connected to the driving mechanism, the inner and outer side walls of the elastic member respectively abut against the bottom of the concave cavity and the cavity wall of the first installation cavity.

3. The oil-gas separator according to claim 2, characterized in that: The concave cavity is arranged in an annular shape or in an arc shape, and the corresponding elastic member is arranged in an annular shape or in an arc shape.

4. The oil-gas separator according to claim 3, characterized in that: When the concave cavity is arranged in an arc shape and the number of the concave cavity is one, the arc-shaped concave cavity is arranged at any position of the outer side wall of the driving mechanism.

5. The oil-gas separator according to claim 3, characterized in that: When the concave cavity is arranged in an arc shape and there are multiple concave cavities, the multiple arc-shaped concave cavities are distributed in a ring shape along the axial direction of the driving mechanism, and two adjacent arc-shaped concave cavities are separated by the outer side wall of the driving mechanism, or the multiple arc-shaped concave cavities are arranged side by side along the axial direction of the driving mechanism, and two adjacent arc-shaped concave cavities are separated by the outer side wall of the driving mechanism.

6. The oil-gas separator according to claim 1, characterized in that: A pre-positioning portion is also provided between the base and the driving mechanism, and the pre-positioning portion includes a positioning convex portion and a positioning concave portion, wherein the positioning convex portion is provided on the base, and the positioning concave portion is provided on the driving mechanism, and the positioning connection between the base and the driving mechanism is realized through the concave-convex cooperation between the positioning concave portion and the positioning convex portion.

7. The oil-gas separator according to claim 6, characterized in that: The positioning protrusion is arranged on the first connection plane, and the positioning concave portion is arranged on the second connection plane and passes through the second connection plane, wherein the positioning protrusion is arranged in a columnar shape, and the positioning concave portion is arranged in a circular shape.

8. The oil-gas separator according to claim 6, characterized in that: The number of the positioning protrusions is at least two, and the number of the positioning recesses is also at least two. When the number of the positioning protrusions and the number of the positioning recesses are both two, the two positioning protrusions and the two positioning recesses are respectively diagonally arranged; when the number of the positioning protrusions and the number of the positioning recesses are both three, the three positioning protrusions and the three positioning recesses are respectively distributed in a triangle.

9. The oil-gas separator according to claim 6, characterized in that: The positioning recess comprises a positioning lug formed by extending outwardly from the outer side wall of the driving mechanism, and a positioning hole is arranged on the positioning lug, wherein the positioning hole is plug-fitted with the positioning protrusion.

10. The oil-gas separator according to claim 9, characterized in that: It also includes a first connecting lug formed by extending outward from the outer wall of the driving mechanism, and a first connecting hole is arranged on the first connecting lug, and a second connecting lug is formed by extending outward from the outer wall of the base, and a second connecting hole is arranged on the second connecting lug. When the driving mechanism is connected to the base, the first connecting hole is aligned with the second connecting hole, and the connection between the two is fixed by a fastener.

11. The oil-gas separator according to claim 10, characterized in that: The positioning lug is integrally arranged with the first connecting lug at the corresponding position, and the positioning protrusion is arranged on the corresponding second connecting lug.

12. The oil-gas separator according to any one of claims 1 to 11, characterized in that: An end of the base away from the first installation cavity extends outward along the outer contour of the base to form a mounting platform, and the mounting plane is located on the mounting platform, wherein a plurality of connecting members are arranged on the mounting platform.

13. The oil-gas separator according to claim 12, characterized in that: A first flange, an optical axis section and a threaded section are arranged on the connecting piece along the axial direction of the connecting piece, wherein the outer diameter of the first flange is larger than the diameter of the plug-in hole on the mounting platform that is plug-matched with the connecting piece.

14. The oil-gas separator according to claim 13, characterized in that: An annular protrusion is arranged on the edge of the plug hole along the upper side of the mounting platform. When the connector is connected in place, the first flange abuts against the annular protrusion.

15. The oil-gas separator according to claim 13, characterized in that: A second flange is also arranged between the optical axis section and the threaded section, and the length from the lower surface of the first flange to the lower surface of the second flange is equal to the depth of the plug-in hole.

16. A car, characterized in that: An oil-gas separator comprising the oil-gas separator according to any one of claims 1 to 15.

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