阅读说明：本技术 一种轴向柱塞泵提升自吸能力的方法及装置 (Method and device for improving self-absorption capacity of axial plunger pump ) 是由 邱荣泉 黄恩博 朱花艳 沈荣荣 卞奕焜 瞿冬婕 严才林 顾林龙 陈天峰 于 2021-07-16 设计创作，主要内容包括：本发明涉及轴向柱塞泵技术领域,具体涉及一种轴向柱塞泵提升自吸能力的方法及装置,通过外部驱动设备驱动轴承内壳在后盖的内部转动,进而带动涡轮转动,通过后盖进油口向后盖内部供油,油液进入到涡轮位置,油液在涡轮的转动下获得离心力,沿离心通道甩出后盖,后盖进油口处出现真空,油液继续流向涡轮处,如此通过在后盖内置涡轮的方式,将外部油液泵入后盖的供油通道内,从而能够在不增加外部占用空间的情况下增加轴向柱塞泵的供油效率。(The invention relates to the technical field of axial plunger pumps, in particular to a method and a device for improving self-absorption capacity of an axial plunger pump.)

1. A device for improving self-priming capability of an axial plunger pump is characterized by comprising a through shaft flange, a rear cover and a self-priming assembly;

the rear cover is fixedly connected with the through shaft flange;

the self-priming assembly comprises a cylindrical roller bearing, a turbine and a mounting component, one end of the cylindrical roller bearing is fixedly connected with the through shaft flange, the other end of the cylindrical roller bearing is rotatably connected with the rear cover, and the mounting component is connected with the cylindrical roller bearing and connected with the turbine.

2. The apparatus for improving self-priming capability of an axial plunger pump according to claim 1,

the cylindrical roller bearing comprises a bearing outer shell and a bearing inner shell, wherein the bearing outer shell is fixedly connected with the through shaft flange and is arranged inside the through shaft flange; the bearing inner shell is rotatably connected with the bearing outer shell, fixedly connected with the turbine and rotatably connected with the rear cover, and the bearing inner shell is positioned on one side, close to the turbine, of the rear cover.

3. The apparatus for improving self-priming capability of an axial plunger pump according to claim 2,

the mounting component comprises a spline housing, the spline housing is fixedly connected with the through shaft flange, fixedly connected with the bearing outer shell and rotatably connected with the bearing inner shell, and the spline housing is located between the bearing outer shell and the through shaft flange.

4. The apparatus for improving self-priming capability of an axial plunger pump according to claim 1,

the mounting component also comprises an elastic retaining ring for the shaft, and the elastic retaining ring for the shaft is sleeved outside the inner bearing shell and is abutted against the turbine.

5. The apparatus for improving self-priming capability of an axial plunger pump according to claim 3,

the mounting component further comprises a circlip for holes, and the circlip for holes is arranged on the spline sleeve and sleeved on the outer side of the bearing inner shell.

6. The apparatus for improving self-priming capability of an axial plunger pump according to claim 1,

the rear cover is also provided with a centrifugal channel, and the centrifugal channel is positioned on one side of the rear cover close to the turbine and is communicated with the turbine.

7. The apparatus for improving self-priming capability of an axial plunger pump according to claim 1,

the device for improving the self-priming capability of the axial plunger pump further comprises an inner O-shaped ring, wherein the inner O-shaped ring is sleeved on the through shaft flange and is positioned at one side, close to the rear cover, of the through shaft flange and is abutted to the rear cover.

8. The apparatus for improving self-priming capability of an axial plunger pump according to claim 1,

the device for improving the self-priming capability of the axial plunger pump further comprises an outer O-shaped ring, wherein the outer O-shaped ring is sleeved on the through shaft flange and is positioned on one side, away from the rear cover, of the through shaft flange.

9. Method for improving self-priming capacity of an axial piston pump, using a device for improving self-priming capacity of an axial piston pump according to claims 1 to 8, characterized in that it comprises the steps of,

the cylindrical roller bearing is driven to rotate, and the cylindrical roller bearing drives the turbine to rotate;

oil is supplied to the interior of the rear cover through an oil inlet of the rear cover, and the oil enters the turbine;

the oil liquid obtains centrifugal force under the rotation of the turbine and is thrown out of the rear cover along the centrifugal channel;

the oil inlet of the rear cover is vacuum, and the oil liquid continues to flow to the turbine.

Technical Field

The invention relates to the technical field of axial plunger pumps, in particular to a method and a device for improving self-absorption capacity of an axial plunger pump.

Background

The self-priming capacity of the existing axial plunger pump is poor, when the axial plunger pump works, insufficient oil suction is easily caused if the oil pressure supplied by an inlet is low, so that air suction is caused, cavitation is generated, vibration and noise are caused, the friction pair in the pump is quickly abraded, the failure of the pump is accelerated, and the service life of the pump is influenced.

At present through increase the pressure boost oil tank on axial plunger pump, pass through the pressure boost oil tank and give hydraulic plunger pump entry pressure boost, because the pressure boost oil tank sets up outside the axial plunger to the pressure boost oil tank is bulky, when installing the pressure boost oil tank, needs to consider installation space more, and then has reduced axial plunger pump's practicality.

Disclosure of Invention

The invention aims to provide a method and a device for improving self-absorption capacity of an axial plunger pump, and aims to solve the technical problem that in the prior art, a pressurizing oil tank is additionally arranged on the axial plunger pump, and an inlet of a hydraulic plunger pump is pressurized through the pressurizing oil tank.

In order to achieve the purpose, the device for improving the self-priming capability of the axial plunger pump comprises a through shaft flange, a rear cover and a self-priming assembly;

the rear cover is fixedly connected with the through shaft flange;

the self-priming assembly comprises a cylindrical roller bearing, a turbine and a mounting component, one end of the cylindrical roller bearing is fixedly connected with the through shaft flange, the other end of the cylindrical roller bearing is rotatably connected with the rear cover, and the mounting component is connected with the cylindrical roller bearing and connected with the turbine.

The cylindrical roller bearing comprises a bearing outer shell and a bearing inner shell, wherein the bearing outer shell is fixedly connected with the through shaft flange and is arranged inside the through shaft flange; the bearing inner shell is rotatably connected with the bearing outer shell, fixedly connected with the turbine and rotatably connected with the rear cover, and the bearing inner shell is positioned on one side, close to the turbine, of the rear cover.

The mounting component comprises a spline housing, the spline housing is fixedly connected with the through shaft flange, fixedly connected with the bearing outer shell and rotatably connected with the bearing inner shell, and the spline housing is located between the bearing outer shell and the through shaft flange.

The mounting component further comprises a shaft elastic retaining ring which is sleeved on the outer side of the bearing inner shell and is abutted to the turbine.

The mounting component further comprises a circlip for holes, and the circlip for holes is arranged on the spline sleeve and sleeved on the outer side of the bearing inner shell.

The rear cover is also provided with a centrifugal channel, and the centrifugal channel is positioned on one side of the rear cover close to the turbine and is communicated with the turbine.

The device for improving the self-absorption capacity of the axial plunger pump further comprises an inner O-shaped ring, wherein the inner O-shaped ring is sleeved on the through shaft flange and is positioned at one side, close to the rear cover, of the through shaft flange and is abutted to the rear cover.

The device for improving the self-absorption capacity of the axial plunger pump further comprises an outer O-shaped ring, wherein the outer O-shaped ring is sleeved on the through shaft flange and is positioned on one side, away from the rear cover, of the through shaft flange.

A method for improving self-absorption capacity of an axial plunger pump comprises the following steps,

the cylindrical roller bearing is driven to rotate, and the cylindrical roller bearing drives the turbine to rotate;

oil is supplied to the interior of the rear cover through an oil inlet of the rear cover, and the oil enters the turbine;

the oil liquid obtains centrifugal force under the rotation of the turbine and is thrown out of the rear cover along the centrifugal channel;

the oil inlet of the rear cover is vacuum, and the oil liquid continues to flow to the turbine.

According to the method and the device for improving the self-absorption capacity of the axial plunger pump, the bearing inner shell is driven to rotate in the rear cover through the external driving device, the turbine is driven to rotate, oil is supplied to the interior of the rear cover through the oil inlet of the rear cover, the oil enters the position of the turbine, the oil obtains centrifugal force under the rotation of the turbine and is thrown out of the rear cover along the centrifugal channel, the oil inlet of the rear cover is vacuumized, and the oil continues to flow to the turbine, so that the external oil is pumped into the oil supply channel of the rear cover in a mode of arranging the turbine in the rear cover, and the oil supply efficiency of the axial plunger pump can be improved under the condition that the external occupied space is not increased.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic front end view of the back cover of the present invention.

Fig. 2 is a schematic view of a connection structure of a rear cover and a through-shaft flange according to the present invention.

Fig. 3 is a flow chart of a method for lifting the self-energy absorption force of the axial plunger pump.

In the figure: 1-rear cover, 2-first plug screw, 3-end surface O-shaped ring, 4-sealing plug screw, 5-second plug screw, 6-cylindrical roller bearing, 7-spline housing, 8-hole elastic retainer ring, 9-inner hexagon bolt, 10-inner O-shaped ring, 11-through shaft flange, 12-outer O-shaped ring, 13-cylindrical pin, 14-turbine, 15-shaft elastic retainer ring, 16-bearing outer shell, 17-bearing inner shell and 18-centrifugal channel.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1 and 2, the present invention provides a device for improving self-priming capability of an axial plunger pump, which includes a through-shaft flange 11, a rear cover 1 and a self-priming assembly;

the rear cover 1 is fixedly connected with the through shaft flange 11;

the self-priming assembly comprises a cylindrical roller bearing 6, a turbine 14 and a mounting component, one end of the cylindrical roller bearing 6 is fixedly connected with the through shaft flange 11, the other end of the cylindrical roller bearing 6 is rotatably connected with the rear cover 1, and the mounting component is connected with the cylindrical roller bearing 6 and connected with the turbine 14.

Further, referring to fig. 2, the cylindrical roller bearing 6 includes a bearing outer shell 16 and a bearing inner shell 17, the bearing outer shell 16 is fixedly connected with the through shaft flange 11 and is installed inside the through shaft flange 11; the bearing inner shell 17 is rotatably connected with the bearing outer shell 16, fixedly connected with the turbine 14 and rotatably connected with the rear cover 1, and the bearing inner shell 17 is positioned on one side of the rear cover 1 close to the turbine 14.

Further, referring to fig. 2, the mounting member includes a spline housing 7, the spline housing 7 is fixedly connected to the through shaft flange 11, fixedly connected to the bearing outer housing 16, and rotatably connected to the bearing inner housing 17, and the spline housing 7 is located between the bearing outer housing 16 and the through shaft flange 11

In the embodiment, the end face of the through shaft flange 11 is connected with the end face flange of the rear cover 1 through the hexagon socket head cap bolts 9, the end face of the through shaft flange 11 is provided with a matching protrusion extending into the rear cover 1, and the through shaft flange 11 is connected with the rear cover 1 through the matching protrusion; the bearing outer shell 16 of the cylindrical roller bearing 6 is mounted inside the through shaft flange 11 through the spline housing 7 and is used for fixing the bearing outer shell 16 of the cylindrical roller bearing 6, wherein the front end of the spline housing 7 is connected to the bearing inner shell 17 of the cylindrical roller bearing 6 and guides and supports the rotation of the bearing inner shell 17, the outer side of the spline housing 7 is mounted in the center of the end face flange in a threaded manner and fixes the spline housing 7, and the bearing inner shell 17 of the cylindrical roller bearing 6 is rotatably connected with the bearing outer shell 16 through balls; the front side of the rear cover 1 is provided with a cylindrical pin 13 and a rotary table, the rotary table is used for guiding the rotation of the cylindrical roller bearing 6, and the cylindrical pin 13 is used for fixing the rotary table; the side surface of the rear cover 1 is provided with a first screw plug 2, and the first screw plug 2 is used for plugging a hole provided with a bolt; the top of the rear cover 1 is provided with a second screw plug 5, and the second screw plug 5 is used for plugging a hole provided with a bolt; two sealing plugs 4 are mounted on the front end face of the rear cover 1, and the sealing plugs 4 plug bolts on the front end face of the rear cover 1 to prevent oil from overflowing; an end surface O-shaped ring 3 is sleeved on the outer side surface of the rear cover 1, and the end surface O-shaped ring 3 seals the shell of the rear cover 1; the turbine 14 is installed on the periphery of the bearing inner shell 17 of the cylindrical roller bearing 6 through a support, the bearing inner shell 17 of the cylindrical roller bearing 6 is connected with an external driving device, the external driving device drives the bearing inner shell 17 to rotate inside the rear cover 1, the turbine 14 is driven to rotate, oil is supplied to the inside of the rear cover 1 through an oil inlet of the rear cover 1, the oil enters the position of the turbine 14, the oil is centrifuged under the rotation of the turbine 14 and is thrown out of the rear cover 1 along a centrifugal channel 18, vacuum occurs at the oil inlet of the rear cover 1, and the oil continues to flow to the turbine 14, so that the external oil is pumped into the oil supply channel of the rear cover 1 in a mode that the turbine 14 is arranged inside the rear cover 1, and the oil supply efficiency of the axial plunger pump can be increased under the condition that the external occupied space is not increased.

Further, referring to fig. 2, the mounting member further includes a shaft circlip 15, and the shaft circlip 15 is sleeved outside the bearing inner shell 17 and abuts against the turbine 14.

In this embodiment, the circlip 15 for the shaft is sleeved outside the inner bearing shell 17 and abutted against the turbine 14, the circlip for the shaft is made of rubber and has good wear resistance and corrosion resistance, and the circlip for the shaft is installed at the joint between the inner bearing shell 17 and the turbine 14, so that oil is prevented from entering gaps between the turbine 14 and the inner bearing shell 17.

Further, referring to fig. 2, the mounting member further includes a circlip 8 for hole, and the circlip 8 for hole is disposed on the spline housing 7 and sleeved outside the bearing inner housing 17.

In this embodiment, the circlip 8 for holes is sleeved on the periphery of the bearing inner shell 17, is arranged between the bearing inner shell 17 and the spline housing 7, and blocks a gap between the spline housing 7 and the bearing inner shell 17, so that oil is prevented from entering the gap between the spline housing 7 and the bearing inner shell 17.

Further, referring to fig. 2, the rear cover 1 further has a centrifugal passage 18, and the centrifugal passage 18 is located on a side of the rear cover 1 close to the turbine 14 and is communicated with the turbine 14.

In the present embodiment, the centrifugal passage 18 is located below the rear cover 1, extends inward into the rear cover 1, and penetrates the mounting position of the turbine 14, and since the centrifugal passage 18 is provided at the side end of the turbine 14, the oil is thrown into the centrifugal passage 18 by the centrifugal action of the turbine 14, thereby accelerating the movement of the oil.

Further, referring to fig. 2, the device for improving the self-priming capability of the axial plunger pump further includes an inner O-ring 10, and the inner O-ring 10 is sleeved on the through-shaft flange 11, is located on one side of the through-shaft flange 11 close to the rear cover 1, and is abutted to the rear cover 1.

In this embodiment, the material of interior O type circle 10 is the rubber material, and the cover is established lead to axle flange 11 with the hookup location of back lid 1 is right lead to axle flange 11 with the hookup gap of back lid 1 seals, and then avoids fluid to spill over through lead to axle flange 11 with the gap of back lid 1.

Further, referring to fig. 2, the device for improving self-priming capability of the axial plunger pump further includes an outer O-ring 12, and the outer O-ring 12 is sleeved on the through-shaft flange 11 and is located on one side of the through-shaft flange 11 away from the rear cover 1.

In this embodiment, the material of outer O shape circle 12 is the rubber material, and the cover is established lead to the hookup location of axle flange 11 and external equipment, it is right lead to the hookup gap of axle flange 11 and external equipment and seal, and then avoid fluid to spill over through the gap that leads to axle flange 11 and external equipment.

Referring to fig. 3, a method for lifting self-energy absorption force of an axial plunger pump includes the following steps:

s101: the cylindrical roller bearing 6 is driven to rotate, and the turbine 14 is driven to rotate by the cylindrical roller bearing 6;

s102: oil is supplied to the interior of the rear cover 1 through an oil inlet of the rear cover 1, and the oil enters the position of the turbine 14;

s103: the oil liquid obtains centrifugal force under the rotation of the turbine 14 and is thrown out of the rear cover 1 along the centrifugal channel 18;

s104: the oil inlet of the rear cover 1 is vacuumized, and the oil liquid continues to flow to the turbine 14.

In this embodiment, the bearing inner housing 17 is driven by an external driving device to rotate inside the rear cover 1, so as to drive the turbine 14 to rotate, oil is supplied to the inside of the rear cover 1 through an oil inlet of the rear cover 1, oil enters the position of the turbine 14, the oil obtains centrifugal force under the rotation of the turbine 14, the oil is thrown out of the rear cover 1 along the centrifugal channel 18, the oil inlet of the rear cover 1 is vacuumized, and the oil continues to flow to the turbine 14, so that the external oil is pumped into the oil supply channel of the rear cover 1 in a manner of arranging the turbine 14 in the rear cover 1, and the oil supply efficiency of the axial plunger pump can be increased without increasing an external occupied space.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.