CN217055325U

CN217055325U - Variable oil pump

Info

Publication number: CN217055325U
Application number: CN202220758424.4U
Authority: CN
Inventors: 刘守林; 何万飞; 王帆; 金润
Original assignee: CHONGQING YUNHAI MACHINERY MANUFACTURING CO LTD
Current assignee: CHONGQING YUNHAI MACHINERY MANUFACTURING CO LTD
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-07-26
Anticipated expiration: 2032-03-28

Abstract

The utility model provides a variable oil pump, belonging to the technical field of oil pumps and solving the problem that the oil supply flow of the oil pump is excessive along with the increase of the rotating speed of an engine, which causes huge waste of oil supply capacity and power consumption in the prior art, and comprising a pump body; the pump cover is fixedly connected to the pump body, an inner cavity is formed in the pump body, and a pressure oil mechanism is connected in the inner cavity; the oil pressing mechanism comprises a transmission shaft, a rotor, blades and a retainer ring, the rotor is provided with a plurality of slots along the radial direction, the inner cavity is divided into a spring cavity, an oil inlet area, an oil outlet area, a first feedback cavity and a second feedback cavity by the swinging ring, and an adjusting spring is arranged in the spring cavity; the first feedback chamber and the second feedback chamber are communicated through a feedback channel, the feedback channel is provided with an electromagnetic valve for opening and closing the feedback channel, and when the volumes of the first feedback chamber and the second feedback chamber are changed, the first feedback chamber and the second feedback chamber swing around the adjusting rotating piece to rotate.

Description

Variable oil pump

Technical Field

The utility model belongs to the technical field of the oil pump, more specifically says, in particular to variable oil pump.

Background

The oil pump is an indispensable important part in an engine lubricating system as a key part playing an important role in the engine lubricating system, and is widely applied to the field of engines of automobiles, engineering machinery and agricultural machinery.

The common oil pumps at present comprise an external gear pump, an internal gear cycloidal pump and a vane pump, the working principles of the oil pumps are the same, low-pressure oil is changed into high-pressure oil by utilizing volume change, and the discharge capacity must be selected according to the maximum demand point of an engine during design.

As in application No.: CN 108204513A.

Based on the search of the above patents and the discovery of equipment in the prior art, the oil supply flow of the oil pump is excessive along with the increase of the engine speed in the prior art, which causes great waste of oil supply capacity and power consumption.

Therefore, in view of the above, research and improvement are made on the existing structure and defects, and a variable oil pump is provided to achieve the purpose of higher practical value.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a variable oil pump to it is excessive along with engine speed increase oil pump fuel feeding flow among the prior art to solve, causes the huge extravagant problem of fuel feeding ability and power consumption.

The utility model relates to a purpose and efficiency of variable oil pump are reached by following concrete technological means:

a variable oil pump, comprising:

a pump body;

the pump cover is fixedly connected to the pump body, an inner cavity is formed in the pump body, and a pressure oil mechanism is connected in the inner cavity;

the oil pressing mechanism comprises a transmission shaft rotatably connected with the middle part of the pump body, a rotor fixedly connected with the transmission shaft, a plurality of blades arranged on the outer periphery of the rotor, retainer rings with outer circumferences butted with the inner ends of the plurality of blades, a plurality of slots arranged on the rotor along the radial direction, swinging rings arranged in the slots in a sliding manner, inner ring surfaces arranged on the swinging rings and abutted with the outer ends of the plurality of blades, adjusting rotating members rotatably connected with the outer sides of the swinging rings and rotatably connected with the inner cavities, the swinging rings divide the inner cavities into spring cavities, an oil inlet area, an oil outlet area, a first feedback cavity and a second feedback cavity, adjusting springs arranged in the spring cavities, one ends of the adjusting springs abutted against the inner walls of the inner cavities, the other ends of the adjusting springs abutted against the swinging rings, and the spring cavities and the oil inlet areas are communicated with the oil inlets, the oil outlet area is communicated with the oil outlet channel;

the first feedback chamber and the second feedback chamber are communicated through a feedback channel, the feedback channel is provided with an electromagnetic valve for opening and closing the feedback channel, and when the volumes of the first feedback chamber and the second feedback chamber are changed, the swinging ring rotates around the adjusting rotating part.

Further, still include the strainer, strainer one end and oil inlet intercommunication, the strainer other end is provided with the filter screen.

Furthermore, a limiting opening is formed in the pump body, a pressure limiting valve spring is arranged in the limiting opening, one end of the pressure limiting valve spring is abutted to a steel ball, one end of the limiting opening is communicated with the oil outlet channel, the other end of the limiting opening is communicated with the outside, and the steel ball is subjected to the elastic force of the pressure limiting valve spring to seal the limiting opening.

Furthermore, the swing ring is provided with two sealing components, the swing ring is provided with a clamping groove corresponding to the sealing components, the sealing components are arranged in the clamping groove and comprise sliding seal supports clamped in the clamping groove and sliding seals with surfaces tightly attached to the inner wall of the inner cavity, and the sliding seals are arranged in the clamping groove and tightly attached to the sliding seal supports.

Further, the outside of the pump body is provided with a chain wheel and a chain wheel cover, the chain wheel is fixedly connected to the transmission shaft, the chain wheel cover is fixedly connected with the pump body, and the chain wheel cover is arranged outside the chain wheel.

Furthermore, a control pipeline is arranged in the pump body, one end of the control pipeline is communicated with the side wall of the feedback channel, and the other end of the control pipeline is communicated with the oil outlet channel.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses for traditional ration oil pump, increased the second order variable characteristic, the output flow of pump can be according to load variation automatically regulated, and the flow can reduce when system pressure is higher than the pressure that the pump was set, makes power loss fall to minimum, has characteristics such as high efficiency, energy-conservation, safe and reliable. The utility model discloses a variable displacement oil pump reduces the engine energy consumption according to its output flow of engine operating mode automatic control, reaches energy-conserving purpose.

Drawings

Fig. 1 is a front view structure diagram of the present invention.

Fig. 2 is a schematic sectional structure view of a-a in fig. 1.

Fig. 3 is a schematic sectional structure view of B-B in fig. 1.

Fig. 4 is a schematic sectional structure view of C-C in fig. 1.

Fig. 5 is a schematic cross-sectional view of D-D in fig. 2.

Fig. 6 is a rear view schematic diagram of the present invention.

Fig. 7 is a schematic bottom view of the present invention.

Fig. 8 is a schematic sectional structure view of E-E in fig. 7.

Fig. 9 is a schematic sectional structure view of F-F in fig. 7.

Fig. 10 is a schematic sectional structure view of G-G in fig. 7.

Fig. 11 is a schematic perspective view of the pump body according to the present invention.

Fig. 12 is a schematic structural view of the oil pressing mechanism of the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

a pump body 1, inner hexagonal pan head screws 2, a pump cover 3, an electromagnetic valve (4), a transmission shaft 5,

A chain wheel 6, a strainer 7, a filter screen 71, a conical plug 8, a positioning pin sleeve 9, a steel ball 10,

A pressure limiting valve spring 11, a sliding pin 12, an oil outlet sealing ring 13, an adjusting spring 14, a swinging ring 15, an inner ring surface 151,

The hydraulic control system comprises a sliding seal support 16, a sliding seal 17, a vane 18, a retainer ring 19, a rotor 20, a slot 201, a chain wheel cover 21, a regulating rotating member 22, a spring chamber 23, an oil inlet area 24, an oil outlet area 25, a first feedback chamber 26, a second feedback chamber 27, a feedback channel 28, an inner cavity 29, an oil pressure area 30, a limiting port 31, an oil outlet channel 32 and a control pipeline 33.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in figures 1 to 12:

the utility model provides a variable oil pump, include:

a pump body 1;

the pump cover 3 is fixedly connected to the pump body 1, an inner cavity 29 is formed in the pump body 1, and a pressure oil mechanism is connected in the inner cavity 29;

the oil pressing mechanism comprises a transmission shaft 5 rotatably connected with the middle part of the pump body 1, a rotor 20 fixedly connected with the transmission shaft 5, a plurality of blades 18 arranged on the outer circumference of the rotor 20, a retainer ring 19 with the outer circumference abutting against the inner ends of the blades 18, a plurality of slots 201 arranged on the rotor 20 along the radial direction, a swinging ring 15, an inner ring surface 151 arranged on the swinging ring 15, an inner ring surface 151 abutting against the outer ends of the blades 18, an adjusting rotating member 22 rotatably connected with the outer side of the swinging ring 15, the adjusting rotating member 22 rotatably connected with the inner cavity 29, the swinging ring 15 dividing the inner cavity 29 into a spring chamber 23, an oil inlet area 24, an oil outlet area 25, a first feedback chamber 26 and a second feedback chamber 27, an adjusting spring 14 arranged in the spring chamber 23, one end of the adjusting spring 14 abutting against the inner wall of the inner cavity 29, and the other end of the adjusting spring 14 abutting against the swinging ring 15, the spring cavity 23 and the oil inlet area 24 are communicated with the oil inlet, and the oil outlet area 25 is communicated with the oil outlet channel 32;

the first feedback chamber 26 and the second feedback chamber 27 communicate with each other through a feedback passage 28, the feedback passage 28 is provided with the solenoid valve 4 for opening and closing the feedback passage 28, and the oscillating ring 15 rotates about the regulating rotatable member 22 when the volumes of the first feedback chamber 26 and the second feedback chamber 27 are changed.

In the embodiment, the oil pressing mechanism can press oil in the oil inlet area 24 into the oil outlet area 25, the oil outlet area 25 conveys the oil to a position of an engine needing cooling, the pressed oil is conveyed to the first feedback chamber 26 and the second feedback chamber 27, and the rotation angle of the swing ring 15 is controlled by controlling the pressure difference between the first feedback chamber 26 and the second feedback chamber 27, so that the amount of the conveyed oil is adjusted according to different engine revolutions. The pump body 1 and the pump cover 3 are fixedly connected through the hexagon socket head cap screws 2, and the sliding pin 12 is arranged for positioning when the pump body 1 and the pump cover 3 are connected. Before the pump body 1 and the pump cover 3 are fixed, the positioning pin bush 9 can be inserted into the bolt hole for positioning, and then the bolt is locked at the positioning pin bush 9 through the bolt.

The oil pressing mechanism is provided with a plurality of oil pressing areas 30 which are formed by surrounding the outer circumference of the rotor 20, the vanes 18 and the inner ring surface 151, and the effect of adjusting the oil pressure of the machine is achieved by adjusting the eccentric distance of the swinging ring 15.

When the variable oil pump increases in rotation speed, the oil pressure output from the oil outlet passage 32 increases, and the oil in the first feedback chamber 26 and the second feedback chamber 27 pushes the swing ring 15 to overcome the pressure of the adjusting spring 14 to rotate the swing ring 15, so that the displacement per rotation of the variable pump decreases. When the system pressure is higher than the pressure set by the pump, the flow is reduced, so that the power loss is reduced to the minimum, the output flow is automatically controlled according to the working condition of the engine, the energy consumption of the engine is reduced, and the aim of saving energy is fulfilled.

The oil filter is characterized by further comprising a strainer 7, one end of the strainer 7 is communicated with the oil inlet, and a filter screen 71 is arranged at the other end of the strainer 7. The strainer 7 is arranged in front of an oil inlet of the oil pump and mainly used for preventing larger mechanical impurities from entering the oil pump. An oil outlet sealing ring 13 is arranged at the end part of the oil outlet channel 32 for achieving better sealing connection effect. The side wall of the oil outlet channel 32 is provided with a conical plug 8.

As shown in fig. 4 and fig. 11, a limiting opening 31 is provided on the pump body 1, a pressure limiting valve spring 11 is provided in the limiting opening 31, one end of the pressure limiting valve spring 11 is abutted with the steel ball 10, one end of the limiting opening 31 is communicated with the oil outlet channel 32, the other end of the limiting opening 31 is communicated with the outside, and the steel ball 10 is subject to the elastic force of the pressure limiting valve spring 11 to seal the limiting opening 31.

The pressure limiting valve spring 11 and the steel ball 10 are arranged to play a role of safety pressure limiting, when the oil pressure of the feedback channel is too large, the steel ball 10 is pressed to compress the pressure limiting valve spring 11, and further the limiting port 31 is opened to release the oil pressure.

As shown in fig. 5 and 12, two sealing members are disposed on the swing ring 15, a clamping groove corresponding to the sealing member is disposed on the swing ring 15, the sealing member is disposed in the clamping groove, the sealing member includes a sliding seal support 16 clamped in the clamping groove, and a sliding seal 17 whose surface is tightly attached to the inner wall of the inner cavity 29, and the sliding seal 17 is disposed in the clamping groove and tightly attached to the sliding seal support 16.

The sealing member is arranged to make the first feedback chamber 26 and the second feedback chamber 27 more airtight, and to facilitate the pressure application to the first feedback chamber 26 and the second feedback chamber 27, so as to control the rotation of the swing ring 15.

The outside of the pump body 1 is provided with a chain wheel 6 and a chain wheel cover 21, the chain wheel 6 is fixedly connected to the transmission shaft 5, the chain wheel cover 21 is fixedly connected with the pump body 1, and the chain wheel cover 21 covers the outside of the chain wheel 6.

The chain wheel 6 is in transmission connection with an automobile engine to provide power for an oil pump, and the chain wheel cover 21 is used for protecting the chain wheel 6 and is not easy to collide with other structures.

A control pipeline 33 is arranged in the pump body 1, one end of the control pipeline 33 is communicated with the side wall of the feedback channel 28, and the other end of the control pipeline 33 is communicated with the oil outlet channel 32.

The control line 33 communicates the feedback passage 28 with the oil outlet passage 2, and the oil in the oil outlet passage 32 can flow into the first feedback chamber 26 and the second feedback chamber 27 through the control line 33 and the feedback passage 28, thereby applying the oil pressure to the first feedback chamber 26 and the second feedback chamber 27.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A variable oil pump, comprising:

a pump body (1);

the pump cover (3), the pump cover (3) is fixedly connected to the pump body (1), an inner cavity (29) is arranged inside the pump body (1), and a pressure oil mechanism is connected in the inner cavity (29);

the oil pressing mechanism comprises a transmission shaft (5) rotatably connected with the middle of the pump body (1), a rotor (20) fixedly connected with the transmission shaft (5), a plurality of blades (18) arranged on the outer circumference of the rotor (20), and a plurality of retaining rings (19) abutted against the outer circumference of the rotor (20), wherein the rotor (20) is provided with a plurality of slots (201) along the radial direction, the blades (18) are slidably arranged in the slots (201), the oil pressing mechanism further comprises a swinging ring (15), the swinging ring (15) is provided with an inner ring surface (151), the inner ring surface (151) is abutted against the outer ends of the blades (18), the outer side of the swinging ring (15) is rotatably connected with an adjusting rotating piece (22), the adjusting rotating piece (22) is rotatably connected with an inner cavity (29), and the swinging ring (15) divides the inner cavity (29) into a spring cavity (23), an oil inlet area (24) and a retainer ring (15), The oil outlet area (25), the first feedback chamber (26) and the second feedback chamber (27), an adjusting spring (14) is arranged in the spring chamber (23), one end of the adjusting spring (14) abuts against the inner wall of the inner cavity (29), the other end of the adjusting spring (14) abuts against the swinging ring (15), the spring chamber (23) and the oil inlet area (24) are communicated with an oil inlet, and the oil outlet area (25) is communicated with the oil outlet channel (32);

the first feedback chamber (26) and the second feedback chamber (27) are communicated through a feedback channel (28), the feedback channel (28) is provided with an electromagnetic valve (4) for opening and closing the feedback channel (28), and when the volumes of the first feedback chamber (26) and the second feedback chamber (27) are changed, the swinging ring (15) rotates around the adjusting rotating piece (22).

2. The variable oil pump according to claim 1, characterized in that: the oil filter is characterized by further comprising a strainer (7), one end of the strainer (7) is communicated with the oil inlet, and a filter screen (71) is arranged at the other end of the strainer (7).

3. The variable oil pump of claim 1, wherein: the oil pump is characterized in that a limiting opening (31) is formed in the pump body (1), a pressure limiting valve spring (11) is arranged in the limiting opening (31), one end of the pressure limiting valve spring (11) is abutted to a steel ball (10), one end of the limiting opening (31) is communicated with an oil outlet channel (32), the other end of the limiting opening (31) is communicated with the outside, and the steel ball (10) is subjected to the elastic force of the pressure limiting valve spring (11) to seal the limiting opening (31).

4. The variable oil pump of claim 1, wherein: the swing ring (15) is provided with two sealing components, a clamping groove corresponding to the sealing components is formed in the swing ring (15), the sealing components are arranged in the clamping groove and comprise sliding sealing supports (16) clamped in the clamping groove and sliding seals (17) with surfaces tightly attached to the inner wall of the inner cavity (29), and the sliding seals (17) are arranged in the clamping groove and tightly attached to the sliding sealing supports (16).

5. The variable oil pump according to any one of claims 1 to 4, characterized in that: the pump body (1) outside is provided with sprocket (6), sprocket cover (21), sprocket (6) fixed connection is on transmission shaft (5), sprocket cover (21) and pump body (1) fixed connection, sprocket cover (21) cover is located sprocket (6) outside.

6. A variable oil pump according to claim 3, characterized in that: a control pipeline (33) is arranged in the pump body (1), one end of the control pipeline (33) is communicated with the side wall of the feedback channel (28), and the other end of the control pipeline (33) is communicated with the oil outlet channel (32).