CN1016522B

CN1016522B - Positive-displacement rotor pump with cavity of spiral curved surface

Info

Publication number: CN1016522B
Application number: CN 90105075
Authority: CN
Inventors: 白明
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-03-31
Filing date: 1990-03-31
Publication date: 1992-05-06
Also published as: CN1045444A

Abstract

Positive-displacement rotor pump with cavity of spiral curved surface belongs to a kind of of volume rotor pump, by the pump housing, end cap, bearing, bearing pin, rotor shaft, rotor sheet, seal ring, parts such as oil sealing constitute, it is characterized in that having on the rotor shaft of this pump one with the parallel slot of axle median plane symmetry, rotor sheet is packed into bearing pin in the parallel slot, it more than 3 or 3 is the arc surface of radius with R that the round Φ of rotor sheet goes up uniform, cavity of spiral curved surface in the stator on the hole is the compound motion done of rotor sheet relative stator and creating, the principle uniqueness, simple in structure, pressure and pulsation are little, noise is low, the volumetric efficiency height, processing and fabricating is easy, can be widely used in lathe, engineering machinery, light industry, metallurgical equipment, in the hydraulic system of boats and ships.

Description

Positive-displacement rotor pump with cavity of spiral curved surface

The invention belongs to a kind of of volume type rotor pump, can be widely used in the hydraulic system of lathe, engineering machinery, boats and ships, die casting machine, injection molding machine of plastic and metallurgical equipment etc.

Domestic and international normally used volume type rotor pump mainly contains following three kinds at present: 1) gear pump, its shortcoming are that flow and pressure pulsation are big, and noise is big; 2) screw pump, its shortcoming are that pulsation is big, longer dimension to axial, and the manufacturing difficulty, cost is higher; 3) vane pump, shortcoming are complex structures, processing difficulties, and also working life is shorter.

The objective of the invention is provides a kind of principle uniqueness in order to overcome the above-mentioned shortcoming of existing three kinds of displacement pumps, and simple in structure, pressure pulsation is little, and noise is little, the volumetric efficiency height, and manufacturing is easy to positive-displacement rotor pump with cavity of spiral curved surface.

The objective of the invention is to finish like this, the end cap 2 usefulness screws 1 of this rotor pump with cavity of spiral curved surface are fixed on the pump housing 10, seal ring 3 is installed in the seal groove of end cap 2, play the axial seal effect, bearing 4 is contained in the bearing hole of the mandrel of end cap 2 and rotor shaft 13, seal ring 6 is packed in the seal groove of stator 8, stator 8 is contained in the pump housing 10 holes, seal ring 9 is contained in the bottom of the pump housing 10, bearing 11 is contained in the bearing hole of rotor shaft 13 and stator 8, play supporting axle, oil sealing 12 is contained on the output terminal axle of rotor shaft 13, pack in the pump housing 10 oil sealing holes in its outer ring, oil sealing 12 cooperates with the output terminal of rotor shaft 13, its improvement is: 1) have on this rotor shaft 13 one with the parallel slot S of axle median plane symmetry, this median plane is perpendicular to the axle median plane of axis, on the position of distance axis e, have pin-and-hole hole V, rotor sheet 5 usefulness bearing pins 7 are packed in the center parallel slot S of rotor shaft 13, uniform on the round φ of rotor sheet 5 is the circular arc camber W of radius with R more than 3 or 3, G, K, after rotor sheet 5 and rotor shaft 13 are combined integrated, rotor sheet 5 relative rotor shafts 13 rotate around the O point, and the revolution of rotor sheet 5 equates with the revolution of rotor shaft 13; 2) track of cavity of spiral curved surface is on 8 li holes of stator: 8 li holes of rotor sheet 5 and rotor shaft 13 assemblying bodys and stator cooperate, rotor sheet 5 rotates around the O point in parallel slot S, simultaneously with rotor shaft 13 around rotational, the compound motion that rotor sheet 5 relative stator 8 are done and cavity of spiral curved surface I, II, the III created, the centre symmetry line P of this die cavity ₁P ₂, P ₃P ₄, P ₅P ₆Be that lift angle equates three helixes that length is identical.

The present invention can make simply connected, single-acting pump or motor, also can make duplex, double-acting pump or motor, and can utilize its principle to make fluid compression engine.

The present invention compares with existing volume type rotor pump has the principle uniqueness, simple in structure, and pressure and pulsation are little, noise is low, the volumetric efficiency height, characteristics such as manufacturing is easy can be widely used in the hydraulic system of lathe, engineering machinery, light equipment, metallurgical equipment, boats and ships etc.

Description of drawings:

Fig. 1 is the positive-displacement rotor pump with cavity of spiral curved surface structural drawing

Fig. 2 is this pump rotor axle

Fig. 3 is the rotor sheet of this pump

Fig. 4 launches and sectional drawing for this pump stator;

Mark among the figure: 1-screw, 2-end cap, 3,6, the 9-seal ring, 4,11-bearing, 5-rotor sheet, 7-bearing pin, the 8-stator, the 10-pump housing, 12-oil sealing, the 13-rotor shaft, parallel slot on the S-rotor shaft, V-pin-and-hole, W, G, K-rotor sheet circle φ go up three uniform circular arc cambers, I, II, III-cavity of spiral curved surface, F-inlet port, M-oil drain out.

Embodiment of the present invention such as Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, after the assemblying body of rotor shaft 13 and rotor sheet 5 and stator 8 cooperate, on stator 8 hole bodies, promptly form three separate sealing cavity of spiral curved surface I, II, III, when the assemblying body of rotor shaft 13 and rotor sheet 5 by 0 ° of beginning of initial position, when clockwise rotating, simultaneously rotor sheet 5 relative rotor shafts 13 rotate counterclockwise around the O point, and at this moment rotor sheet 5 is that arc surface W and this die cavity I of radius is cut in P with R ₁Point (oil absorbing end), simultaneously a part of arc on the arc surface K is just and on the die cavity III curved surface Overlap, along with rotor shaft 13 rotates, rotor sheet 5 circular arc W begin to enter interior slip of die cavity I of its correspondence, and increase gradually, the beginning oil suction, circular arc K continues to slide in its corresponding die cavity simultaneously, and reduces gradually, oil extraction on one side, oil suction on one side, when rotor shaft turned over β °, the also relative rotor shaft 13 of rotor sheet 5 was when the O point turns over β °, at this moment the circular arc K of rotor sheet 5 has finished oil extraction and oil-absorbing process in the die cavity III of its correspondence, is tangential on P ₆Point (oil extraction end), circular arc K all enter in the rotor shaft 13 parallel slot S, on circular arc W on the while rotor sheet 5 and the die cavity I

Tangent coincidence, and in the die cavity I of its correspondence, continue sliding, on one side oil suction, oil extraction on one side becomes maximum when rotor shaft 13 forwards the circular arc W of (20 °+β °)/2 in the die cavity I to, with on the die cavity I

Tangent coincidence, its arc length be π R along with rotor shaft 13 is rotated further, the oil suction district in the die cavity I is increasing, the oil extraction district is more and more littler, when rotor shaft 13 forwarded 120 ° to, the circular arc G of rotor sheet 5 began the die cavity II P corresponding with it ₃Point (oil absorbing end) is tangent, begins to enter the die cavity II, when rotor shaft 13 forwards 120 °+β ° to, circular arc W just with P ₂Point (oil extraction end) is tangent, in the die cavity I of its correspondence, slide and finish, finish an oil suction and oil extraction process, circular arc W all enters in the parallel slot S on the rotor shaft 13, and along with the rotation of rotor shaft 13, the circular arc G of rotor sheet 5 continues to slide in its corresponding die cavity II, oil suction district in the die cavity II increases gradually, the oil extraction district reduces gradually, and when rotor shaft 13 forwarded 240 ° to, the circular arc K on the rotor sheet 5 began again to enter in the die cavity III of its correspondence and is tangential on P ₅When point (oil absorbing end), rotor shaft continued to forward to 240 °+β °, circular arc G had finished oil-absorbing process and oil extraction process in the die cavity II of its correspondence, and is tangential on P ₄Point (oil extraction end) all enters in the parallel slot S on the rotor shaft 13 simultaneously; Along with the rotation of rotor shaft 13, circular arc K continues to slide in the die cavity III, and the oil suction district in the die cavity III increases gradually, and the oil extraction district reduces gradually, circular arc K gets back to initial position just when rotor shaft 13 forwards 360 ° to, with on the die cavity III Tangent coincidence, simultaneously the circular arc W on the rotor sheet 5 again with P ₁The point beginning is tangent, enters in the die cavity I of its correspondence.Constantly repeat above-mentioned working procedure subsequently.P ₁, P ₃, P ₅Be communicated with P for oil absorbing end is corresponding with inlet port F ₂, P ₄, P ₆Be oil extraction end and oil drain out M flow, make pump realize continuous operation.

Claims

1, a kind of positive-displacement rotor pump with cavity of spiral curved surface, the end cap 2 usefulness screws 1 of this pump are fixed on the pump housing 10, seal ring 3 is installed in the seal groove of end cap 2, bearing 4 is contained in the bearing hole of the mandrel of end cap 2 and rotor shaft 13, seal ring 6 is packed in the seal groove of stator 8, stator 8 is contained in the pump housing 10 holes, seal ring 9 is contained in the bottom of the pump housing, bearing 11 is contained in the bearing hole of rotor shaft 13 and stator 8, oil sealing 12 is contained on the output terminal axle of rotor shaft, pack in the pump housing 10 oil sealing holes in its outer ring, oil sealing 12 cooperates with the output of rotor shaft 13, it is characterized in that described rotor pump also comprises:

Have on a, its rotor shaft 13 one with the parallel slot S of axle median plane symmetry, this median plane is perpendicular to the axle median plane of axis, on the position of distance axis e, have pin-and-hole V, rotor sheet 5 usefulness bearing pins 7 are packed in the parallel slot S of rotor shaft 13, uniform on the round Φ of rotor sheet 5 is the circular arc camber WGK of radius with R more than 3 or 3, after rotor sheet 5 and rotor shaft 13 are combined integrated, rotor sheet 5 relative rotor shafts 13 rotate around 0, and the revolution of rotor sheet 5 equates with the revolution of rotor shaft 13;

The track of cavity of spiral curved surface is on b, 8 li holes of stator: 8 li holes of rotor sheet 5 and rotor shaft 13 assemblying bodys and stator cooperate, rotor sheet 5 rotates around 0 in the parallel slot S of rotor shaft 13, simultaneously with rotor shaft 13 around rotational, the compound motion that rotor sheet 5 relative stator 8 are done and cavity of spiral curved surface I, II, the III created, the centre symmetry line P1 of this die cavity, P2, P3P4, P5P6 is that lift angle equates three helixes that length is identical;

2, according to the described rotor pump of claim 1, it is characterized in that P ₁, P ₃, P ₅Be connected P for oil absorbing end is corresponding with inlet port F ₂, P ₄, P ₆Be oil extraction end and oil drain out M flow, make pump realize continuous operation.