阅读说明：本技术 一种浮动复合型轴向柱塞泵配流盘 (Floating composite axial plunger pump valve plate ) 是由 陈新元 郭媛 曾良才 湛从昌 傅连东 王念先 邓江洪 孙晓浩 卢燕 陈娟 于 2020-11-18 设计创作，主要内容包括：本发明涉及一种浮动复合型轴向柱塞泵配流盘,它包括上配流盘和配流盘底座,在它们连接处的配流盘底座上设有O型密封圈,在所述上配流盘和配流盘底座的中心设有中心通孔,在所述中心通孔的一侧设有吸油窗口、另一侧设有压油窗口,在所述吸油窗口和压油窗口的进口处前端设有减振槽,在所述吸油窗口和压油窗口之间的上配流盘上设有微型单元体织构区,所述微型单元体织构区由若干微型凸台组成。本发明摩擦力小,偏载磨损少,减少泄漏,容积效率高,更换方便,成本低,重量轻,适用范围广。(The invention relates to a floating composite axial plunger pump valve plate, which comprises an upper valve plate and a valve plate base, wherein an O-shaped sealing ring is arranged on the valve plate base at the joint of the upper valve plate and the valve plate base, a central through hole is arranged in the center of the upper valve plate and the valve plate base, an oil suction window is arranged on one side of the central through hole, a pressure oil window is arranged on the other side of the central through hole, a vibration reduction groove is arranged at the front end of the inlet of the oil suction window and the front end of the pressure oil window, a micro unit body texture area is arranged on the upper valve plate between the oil suction window and the pressure oil window, and the micro unit body texture area consists of a plurality of micro bosses. The invention has the advantages of small friction force, less unbalance loading abrasion, leakage reduction, high volume efficiency, convenient replacement, low cost, light weight and wide application range.)

1. The utility model provides a compound axial plunger pump valve plate floats which characterized in that: the structure comprises an upper valve plate (1) and a valve plate base (2), wherein an O-shaped sealing ring (3) is arranged on the valve plate base (2) at the joint of the upper valve plate (1) and the valve plate base (2), a central through hole (4) is formed in the center of the upper valve plate (1) and the valve plate base (2), an oil absorption window (5) is arranged on one side of the central through hole (4), an oil pressing window (6) is arranged on the other side of the central through hole, a vibration reduction groove (7) is arranged at the front ends of inlets of the oil absorption window (5) and the oil pressing window (6), a micro unit body texture area (8) is arranged on the upper valve plate (1) between the oil absorption window (5) and the oil pressing window (6), and the micro unit body texture area (8) is formed by a plurality of micro bosses (9).

2. The floating compound axial plunger pump port plate of claim 1, wherein: go up port plate (1) including disk body (10) and location boss (11), their integrated into one piece, location boss (11) are established in disk body (10) one side outer lane position be equipped with spread groove (12) on port plate base (2) that location boss (11) correspond.

3. The floating compound axial plunger pump port plate of claim 2, wherein: the O-shaped sealing ring (3) is arranged on the valve plate base (2) on the inner side of the connecting groove (12).

4. The floating compound axial plunger pump port plate of claim 1, wherein: the front ends of the inlets of the oil suction window (5) and the oil pressing window (6) are respectively provided with three vibration reduction grooves (7), the length of the middle vibration reduction groove at each position is longer than that of the side vibration reduction grooves at the two sides of the middle vibration reduction groove, and the cross section of each vibration reduction groove (7) is triangular.

5. The floating compound axial plunger pump port plate of claim 1, wherein: the upper valve plate (1) is made of polytetrafluoroethylene.

6. The floating compound axial plunger pump port plate of claim 1, wherein: the valve plate base (2) is made of No. 45 steel.

7. The floating compound axial plunger pump port plate of claim 1, wherein: the upper surface of the miniature bosses (9) is quadrilateral, and the sum of the areas of the upper surfaces of the miniature bosses is 50-80% of the planar area of the miniature unit body texture area (8).

8. The floating compound axial plunger pump port plate of claim 1, wherein: the micro bosses (9) are uniformly distributed in the micro unit body texture area (8).

9. The floating compound axial plunger pump port plate of claim 1, wherein: the free distance between the upper port plate (1) and the port plate base (2) is 10-20 um.

10. The floating compound axial plunger pump port plate of claim 1, wherein: two micro unit body texture areas (8) are arranged, and the cross section of each micro unit body texture area (8) is fan-shaped.

Technical Field

The invention belongs to the field of hydraulic pumps, and particularly relates to a floating composite type axial plunger pump valve plate.

Background

The axial plunger pump is one of the most important hydraulic components and is widely applied to the fields of engineering machinery, metallurgical equipment, aerospace, transportation and the like. In the practical application of the axial plunger pump, the pressure distribution on the surface of the valve plate is uneven, and unbalance loading torque can be generated, so that the surface of the valve plate is subjected to eccentric wear, the volumetric efficiency is reduced, and the service life is shortened. With the rapid development of science and technology, the axial plunger pump develops towards the direction of high pressure, high speed and large flow, higher requirements are put forward on the performance of the axial plunger pump, and the improvement of the performance of the valve plate has great significance on the development of the axial plunger pump.

At present, the patent technology of a high-pressure large-displacement inclined shaft type axial plunger pump (CN 200720138344.4) and the patent technology of a port plate for a hydraulic motor (CN 201220553546.6) and the like do not mention the abrasion of the port plate due to unbalance loading and propose a technical scheme.

In summary, with the above technical data, the following problems exist in the prior art for processing the port plate: the cost is increased, the structure is complex, the application range is narrow, and the problems of unbalance loading abrasion and the like cannot be solved.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to overcome the defects in the prior art and provides the floating composite type axial plunger pump valve plate which has the advantages of small friction force, less unbalance loading abrasion, leakage reduction, high volume efficiency, convenience in replacement, low cost, light weight and wide application range.

The technical scheme is as follows: in order to solve the technical problem, the floating composite axial plunger pump valve plate comprises an upper valve plate and a valve plate base, wherein an O-shaped sealing ring is arranged on the valve plate base at the joint of the upper valve plate and the valve plate base, a central through hole is formed in the centers of the upper valve plate and the valve plate base, an oil suction window is formed in one side of the central through hole, an oil pressing window is formed in the other side of the central through hole, a vibration reduction groove is formed in the front end of the inlet of the oil suction window and the front end of the inlet of the oil pressing window, a micro unit body texture area is arranged on the upper valve plate between the oil suction window and the oil pressing window, and the micro unit body texture area is formed by a plurality of micro bosses.

Furthermore, the upper valve plate comprises a plate body and a positioning boss which are integrally formed, the positioning boss is arranged at the outer ring position of one side of the plate body, and a connecting groove is arranged on a valve plate base corresponding to the positioning boss.

Furthermore, the O-shaped sealing ring is arranged on the valve plate base on the inner side of the connecting groove.

Furthermore, three damping grooves are respectively arranged at the front ends of the inlets of the oil suction window and the oil pressing window, the length of the middle damping groove at each position is longer than that of the side damping grooves at the two sides of the middle damping groove, and the cross section of each damping groove is triangular.

Further, the upper valve plate is made of polytetrafluoroethylene.

Further, the valve plate base is made of No. 45 steel.

Furthermore, the upper surface of the miniature bosses is quadrilateral, and the sum of the areas of the upper surfaces of the miniature bosses is 50-80% of the planar area of the texture area of the miniature unit body.

Furthermore, the micro bosses are uniformly distributed in the micro unit body texture area.

Further, the free distance between the upper port plate and the port plate base is 10-20 um.

Furthermore, two micro unit body texture areas are arranged, and the cross section of each micro unit body texture area is in a fan shape.

In the invention, when the plunger pump absorbs and presses oil, the upper port plate can float under the action of the O-shaped sealing ring to adapt to pressure change and keep the upper port plate in contact with the plane of the pressure absorption oil side of the cylinder body; the outer diameters of the upper valve plate and the valve plate base are 80-110mm, the thickness of the upper valve plate is 5-6mm, and the thickness of the valve plate base is 6-10 mm; three vibration reduction grooves in each position are different in length, the middle vibration reduction groove is longest, the length is 5-7mm, the width is 0-2mm, the depth is 0-3mm, and the other two vibration reduction grooves are distributed on two sides, the length is 3-5mm, the width is 0-2mm, and the depth is 0-2 mm; the distance between the centers of two adjacent micro bosses is 5-50um, and the distance between the surface of the boss and the root is 5-40 um.

Has the advantages that: compared with the prior art, the invention has the following remarkable advantages:

1. by adopting the structure, when the plunger pump absorbs and presses oil, the valve plate can float under the action of the O-shaped sealing ring, so that the upper valve plate can adapt to pressure change, the oil film is kept to have a certain thickness, and the adverse effect of unbalance loading on the valve plate is overcome;

2. the vibration reduction grooves are arranged, and three vibration reduction grooves with different lengths and depths and triangular cross sections are added before entering the oil pressing port and the oil suction port, so that the flow can be gradually increased when entering the oil pressing window, and vibration reduction and noise reduction are facilitated;

3. the transition plane between the oil suction and pressure windows of the upper valve plate is provided with a micro boss surface texture which is quadrilateral, so that the lubricating performance is improved, and the friction is reduced;

4. the upper valve plate is made of polytetrafluoroethylene, the contact plane of the cylinder body and the upper valve plate does not need to be plated with a copper welding material, and the cylinder body is directly made of the material, so that the processing time is saved, and the cost is saved.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a side sectional view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 1 at A;

FIG. 4 is a cross-sectional view of the upper port plate of the present invention;

FIG. 5 is a cross-sectional view of the port plate base of the present invention;

fig. 6 is a schematic structural view of an O-ring according to the present invention.

Detailed Description

The invention is further described below with reference to the figures and examples.

As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, the floating composite axial plunger pump port plate of the present invention comprises an upper port plate 1 and a port plate base 2, an O-ring 3 is disposed on the port plate base 2 at the joint of the upper port plate 1 and the port plate base 2, the upper port plate 1 is made of teflon, the port plate base 2 is made of 45-grade steel, the upper port plate 1 comprises a plate body 10 and a positioning boss 11 which are integrally formed, the positioning boss 11 is disposed at the outer ring position of one side of the plate body 10, a connecting groove 12 is disposed on the port plate base 2 corresponding to the positioning boss 11, the O-ring 3 is disposed on the port plate base 2 at the inner side of the connecting groove 12, the free distance between the upper port plate 1 and the port plate base 2 is 10-20um, a central through hole 4 is disposed at the centers of the upper port plate 1 and the port plate base 2, an oil absorption window 5 is arranged on one side of the central through hole 4, a pressure oil window 6 is arranged on the other side of the central through hole, three vibration reduction grooves 7 are respectively arranged at the front ends of inlets of the oil absorption window 5 and the pressure oil window 6, the length of a middle vibration reduction groove at each position is longer than that of side vibration reduction grooves at two sides of the middle vibration reduction groove, the cross section of each vibration reduction groove 7 is triangular, a micro unit body texture area 8 is arranged on an upper flow distribution plate 1 between the oil absorption window 5 and the pressure oil window 6, the two micro unit body texture areas 8 are arranged in total, the cross section of each micro unit body texture area 8 is fan-shaped, the micro unit body texture area 8 is formed by uniformly distributing a plurality of micro bosses 9, the upper surface shapes of the micro bosses 9 are quadrilateral, and the sum of the upper surface areas of the micro unit body texture areas is 50-80% of the plane area of. When the plunger pump absorbs and presses oil, the upper valve plate can float under the action of the O-shaped sealing ring, so that the pressure change is adapted, the oil film is kept to have a certain thickness, and the adverse effect of eccentric load on the valve plate is overcome; the vibration reduction grooves are arranged, and three vibration reduction grooves with different lengths and depths and triangular cross sections are added before entering the oil pressing port and the oil suction port, so that the flow can be gradually increased when entering the oil pressing window, and vibration reduction and noise reduction are facilitated; the transition plane between the oil suction and pressure windows of the upper valve plate is provided with a micro boss surface texture which is quadrilateral, so that the lubricating performance is improved, and the friction is reduced; the upper valve plate is made of polytetrafluoroethylene, the contact plane of the cylinder body and the upper valve plate does not need to be plated with a copper welding material, and the cylinder body is directly made of the material, so that the processing time and the cost are saved; the product has the advantages of small friction force, less unbalance loading abrasion, leakage reduction, high volume efficiency, convenient replacement, low cost, light weight and wide application range.

The present invention provides a thought and a method, and a method and a way for implementing the technical scheme are many, the above is only a preferred embodiment of the present invention, it should be noted that, for a person skilled in the art, a plurality of improvements and modifications can be made without departing from the principle of the present invention, and the improvements and modifications should be regarded as the protection scope of the present invention, and each component not explicitly described in the embodiment can be implemented by the prior art.