CN201344113Y

CN201344113Y - Novel flow divider shaft of radial plunger pump

Info

Publication number: CN201344113Y
Application number: CNU2008201440507U
Authority: CN
Inventors: 董桂敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-12-09
Filing date: 2008-12-09
Publication date: 2009-11-11
Anticipated expiration: 2018-12-09

Abstract

The utility model relates to a novel flow divider shaft of a radial plunger pump. The radial plunger pump comprises a pump cover, a pump body, a valve body, a valve core, a plunger, a big control plunger, a small control plunger, a big slide block, a small slide block, a connecting rod, a stator, a rotor, a transmission shaft, a flow divider shaft, a coupling and a return stroke ring, wherein, a flow divider window is formed on the flow divider shaft; a flow divider hole in a low-pressure area provides low-pressure oil to the oil-pumping of the plunger; a flow divider hole in a high-pressure area outputs high-pressure hydraulic oil; unequally spaced ring channels and small oil storage holes are formed on the outer surface of the shaft body in the axial direction; the ring channels adopt two all-pass launders; the ten small oil storage holes are distributed on two side surfaces of the shaft body uniformly; and a V-shaped groove is formed on the flow divider window. As none sloping cam plate swing is adopted, the utility model has the advantages of small sliding friction, less heat production and lower correlated energy consumption; an oil film is generated between the rotor and the flow divider shaft; the surface of the inner hole of the rotor is treated by special means and high pressure is released via the V-shaped groove slowly, thereby avoiding dead extrusion and shaft-braking between the rotor and the flow divider shaft.

Description

The novel pintle of radial plunger pump

Technical field

The utility model belongs to hydraulicdriven dynamical element, particularly a kind of novel pintle of radial plunger pump.

Background technique

At present, both at home and abroad the oil hydraulic pump overwhelming majority that uses of high-pressure high flux hydraulic power system is axial piston pump, and its life-span is short, volume is big, noise is big, seepage is big, fragile; And radial plunger pump becomes global problem because of the easy scaling loss seize of pintle.What traditional axial pump used is thrust plate, oblique disk structure.During work, the thrust plate swing is big, sliding friction is big, it is big to produce heat, and corresponding energy consumption is bigger, inefficiency.

Summary of the invention

Problem to be solved in the utility model is, overcome the deficiencies in the prior art, a kind of novel pintle of radial plunger pump is provided, this pump hydraulic oil enters the pump housing from inlet, hole flow on pintle, when rotor high-speed turns round, produce oil film between rotor and pintle, add that the rotor inner hole special surface is handled to increase work efficiency.

The utility model solves its technical problem and takes following technological scheme to realize:

The novel pintle of a kind of radial plunger pump that provides according to the utility model, comprise pump cover 1, the pump housing 2, valve body 3, spool 4, plunger 5, size control plunger 6,7, big small slide block 8,9, connecting rod 10, stator 11, rotor 12, transmission shaft 13, pintle 14, shaft coupling 15 and backhaul ring 16, have on the described pintle 14 flow window 17,17 ', low pressure area assignment hole 18,18 ' wherein for the plunger oil suction provides low pressure oil, zone of high pressure assignment hole 19,19 ' output high-pressure and hydraulic oil; The axis body outer surface has circular groove 20 and the oil storage aperture 21 that distance does not wait vertically; Have V-shaped groove 22 on the flow window.

It is to take following technological scheme further to realize that the utility model solves its technical problem:

Aforesaid circular groove 20 is a twice all-pass chute.

Aforesaid oil storage aperture 21 has ten, is evenly distributed on the bi-side of axis body.

The utility model compared with prior art has significant advantage and beneficial effect:

Because model utility adopts no swash plate swing, sliding friction is little, the generation heat is little, and corresponding energy consumption is less, produces oil film between rotor and pintle, add that the rotor inner hole special surface is handled and V-shaped groove slowly discharges high pressure, avoided rotor and joined pintle asphyxia by external pressure on the chest and abdomen or seize.

Embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.

Description of drawings

Fig. 1 is a sectional structure schematic representation of the present utility model;

Fig. 2 is the left-hand sectional structure schematic representation of Fig. 1;

Fig. 3 is a structural representation of the present utility model;

Fig. 4 is the left-hand sectional structure schematic representation of the utility model Fig. 3;

Wherein: 1, pump cover 2, the pump housing 3, valve body 4, spool 5, plunger 6, greatly control plunger 7, little control plunger 8, big slide block, 9, small slide block 10, connecting rod 11, stator 12, rotor 13, transmission shaft 14, pintle 15, shaft coupling 16, backhaul ring 17, flow window 18,18 ', low pressure area assignment hole 19,19 ', zone of high pressure assignment hole 20, circular groove 21, oil storage aperture 22, V-shaped groove

Embodiment

Below in conjunction with accompanying drawing and preferred embodiment, embodiment, structure, feature and effect thereof that foundation the utility model is provided, describe in detail as after.

The novel pintle of a kind of radial plunger pump shown in Fig. 1～4 comprises pump cover 1, the pump housing 2, valve body 3, spool 4, plunger 5, size control plunger 6,7, big small slide block 8,9, connecting rod 10, stator 11, rotor 12, transmission shaft 13, pintle 14, shaft coupling 15 and backhaul ring 16; Pump cover 1 is connected with the pump housing 2 usefulness screws 20, spool 4 is packed in the center hole of valve body 3, size control plunger 6,7 is contained in respectively in the big or small plunger hole of the pump housing 2 and with big small slide block 8,9 spheres and joins, another cambered surface and the stator of big small slide block 8,9 join, plunger 5 links to each other with connecting rod 10 and packs in the plunger hole of rotor 12, connecting rod 10 outer arced surface and stator 11 form friction pair, intrados and backhaul ring 16 form friction pair, rotor 12 is contained on the pintle 14, high speed rotating under transmission shaft 13, shaft coupling 15 drive utilizes the eccentric high pressure that produces.Have on the described pintle 14 flow window 17,17 ', low pressure area assignment hole 18,18 ' wherein, zone of high pressure assignment hole 19,19 ' output high-pressure and hydraulic oil for the plunger oil suction provides low pressure oil; The axis body outer surface has circular groove 20 and the oil storage aperture 21 that distance does not wait vertically; Circular groove 20 is a twice all-pass chute, and oil storage aperture 21 has ten, is evenly distributed on the bi-side of axis body, has V-shaped groove 22 on the flow window.

Working principle:

During work, hydraulic oil enters the pump housing from inlet, low pressure assignment hole on joining pintle sucks in the plunger hole, at this moment, the ascending oil-absorbing process of finishing of the stroke of plunger and plunger hole, when the stroke of plunger and plunger hole is descending, extruding hydraulic oil and when forming high pressure oil, by through joining the low pressure assignment hole on the pintle, finish the oil extraction process; Joining has assignment hole on the pintle, wherein the low pressure area assignment hole provides low pressure oil for the plunger oil suction, in addition at the zone of high pressure assignment hole, and when plunger is pressed oil, output high-pressure and hydraulic oil.The outer surface of joining pintle has vertically apart from circular groove that does not wait and oil storage aperture and provides oil storage for lubricating, when rotor high-speed turns round, rotor and join and produce oil film between pintle, add that the rotor inner hole special surface is handled and V-shaped groove slowly discharges high pressure, thereby guaranteed rotor and joined pintle to run well.

Claims

1. the novel pintle of a radial plunger pump, comprise pump cover (1), the pump housing (2), valve body (3), spool (4), plunger (5), size control plunger (6,7), big small slide block (8,9), connecting rod (10), stator (11), rotor (12), transmission shaft (13), pintle (14), shaft coupling (15) and backhaul ring (16), it is characterized in that: described pintle has flow window (17 on (14), 17 '), wherein the low pressure area assignment hole (18,18 ') for the plunger oil suction provides low pressure oil, zone of high pressure assignment hole (19,19 ') output high-pressure and hydraulic oil; The axis body outer surface has circular groove (20) and the oil storage aperture (21) that distance does not wait vertically; Have V-shaped groove (22) on the flow window.

2. the novel pintle of radial plunger pump according to claim 1, it is characterized in that: described circular groove (20) is a twice all-pass chute.

3. the novel pintle of radial plunger pump according to claim 1, it is characterized in that: described oil storage aperture (21) has ten, is evenly distributed on the bi-side of axis body.