CN202531418U

CN202531418U - Seal compensating three-space rotor pump for pressure airbag

Info

Publication number: CN202531418U
Application number: CN2012201816174U
Authority: CN
Inventors: 张意立
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-18
Filing date: 2012-04-18
Publication date: 2012-11-14
Anticipated expiration: 2022-04-18

Abstract

The utility model provides a seal compensating three-space rotor pump for a pressure airbag, comprising a pump body, a rotor shaft arranged on a center through hole of the pump body, and a driven rotor arranged on an eccentric semi-hole of the pump body, wherein the work inner end faces of the two rotors are adhered to the bottom plane of the eccentric semi-hole, the work outer end faces of the two rotors are further adhered to the positive plane of a compensating disc, the outer end face of a work region of the eccentric semi-hole is provided with an eccentric end cover which is fixed by at least three bolts in a sealing way, an eccentric distance t exists between the central axis O2 of the rotor shaft and the central axis O1 of the driven rotor, three contact points are synchronously generated between three equal cambered surface work sections of the rotor shaft and four equal cambered surfaces of the driven rotor, a cross-contact point forms into three axially-extended seal strips, in combination with the bottom surface of the eccentric semi-hole and the positive plane of the compensating disc, three dynamic spaces such as A, B and C can be formed, and a positioning pin and the pressure airbag are arranged between the back side of the compensating disc and the eccentric end cover, so that the seal compensation for the wear of the end face can be carried out.

Description

A kind of pressure air bag compensation sealing three Space Rotor pumps

Technical field

The utility model belongs to mechanical engineering field, relate to a kind of with mechanical energy convert into fluid pressure can the transformation of energy displacement pump, be meant a kind of pressure air bag compensation sealing three Space Rotor pumps especially.

Background technique

Known displacement pump main structure form has: plunger pump, screw pump, Roots pump and sliding vane pump.Have the high advantage of efficient as displacement pump, but all exist its efficient of long-time running wearing and tearing back obviously to reduce, cause the main cause of above-mentioned defective to be that movable isolation of end face between hyperbaric chamber and the low pressure chamber fail to play effective sealing.The undersized easy heat expansion of end face fit tolerance is stuck firmly; The end face fit tolerance is oversize then fails to play effective sealing; And long-time running wearing and tearing back sealing effect is poorer, and the production line of having to stop is changed pumping unit, causes very big direct waste and indirect loss.

Summary of the invention

The purpose of the utility model provides a kind of pressure air bag compensation sealing three Space Rotor pumps; The technology that possesses end wear sealing compensation and gauge wear sealing compensation simultaneously; To realize being in good movable isolating seal state for a long time between hyperbaric chamber and the low pressure chamber; Remedy the deficiency of existing technology, fill up the technological gap that displacement pump possesses end wear sealing compensation and gauge wear sealing compensation simultaneously.To achieve these goals, the utility model provides following technological scheme:

A kind of pressure air bag compensation sealing three Space Rotor pumps; Comprise the pump housing and be installed on rotor shaft and off-centre half hole that is installed in the pump housing on the central through bore of the pump housing from rotor; The work inner end of two rotors is pasting the bottom plane in eccentric half hole; The horizontal frontal plane of compensating disc is also being pasted in the work exterior edge face of two rotors, and the exterior edge face, working area in eccentric half hole has eccentric end cap next airtight fixing with at least three screw; Be with " O " type ring recess in the central through bore on the pump housing; Has eccentric distance t between the central axis O2 of central through bore and the eccentric axis O1 in eccentric half hole; A crescent shape suction inlet UNICOM on the bottom surface, eccentric half hole import; Another crescent shape row mouthful UNICOM outlet, and the exterior edge face, working area in eccentric half hole has at least three screws to be connected with screw, and screw is branch layouts such as the center of circle with eccentric axis O1; Rotor shaft comprises three five equilibrium cambered surface active sections and does not have the keyway shaft part and the shaft with keyway section; The inner end of three five equilibrium cambered surface active sections is pasting bottom surface, eccentric half hole; The exterior edge face of three five equilibrium cambered surface active sections is being pasted by the horizontal frontal plane of compensating disc; From rotor complete section of four five equilibrium cambered surfaces are arranged, the size equal uniform of the width of full section both ends of the surface and the both ends of the surface width of three five equilibrium cambered surface active sections; The band that eccentric end covers " O " type ring recess through hole is coaxial with central axis O2; Band " O " type ring recess through hole is slidingly matched with no keyway shaft part; Outer circular edge along eccentric end cap has three unthreaded holes that can pass screw at least; Unthreaded hole is branch layouts such as the center of circle with eccentric axis O1, and locating stud is fastened on the inboard face of eccentric end cap; Have eccentric distance t between the eccentric axis O1 of the central axis O2 of the band on the compensating disc " O " type ring recess through hole and band " O " type ring recess cylindrical, hold a pressure air bag in the back side re-entrant angle of compensating disc, the eccentric positioning hole and the locating stud of compensating disc are slidingly matched; The central axis O2 of rotor shaft and between the eccentric axis O1 of rotor, have eccentric distance t; Three five equilibrium cambered surface active sections of rotor shaft and from three point of contact of synchronized generation between four five equilibrium cambered surfaces of rotor; Cross point of contact and form three axially extended sealing strips,, constitute A, B and three dynamic spaces of C in conjunction with the horizontal frontal plane of eccentric bottom surface, half hole and compensating disc; Locating stud and pressure air bag are arranged between the back side of described compensating disc and the eccentric end cap, and this pressure air bag presents ring-type.

The beneficial effect of the utility model is: have locating stud and pressure air bag to play the effect of end wear sealing compensation between the back side of compensating disc and the eccentric end cap; Can guarantee that still three axially extended sealing strips form synchronously after the long-term use of the experience uniform wear, three axially extended sealing strips of synchronized generation guarantee that radially sliding of three dynamic spaces is in effective sealing all the time.Possess end wear sealing compensation and gauge wear sealing compensation simultaneously, realized being in for a long time between hyperbaric chamber and the low pressure chamber good movable isolating seal state.

Description of drawings

Fig. 1 is the sectional drawing of the utility model integral body through axis;

Fig. 2 is the sectional drawing in W-W cross section among Fig. 1;

Fig. 3 is the relative position relation of inner rotor shaft 1 with respect to three dynamic spaces of synchronized generation that are in operation from rotor 2;

Fig. 4 is with respect to Fig. 3, and rotor shaft 1 is rotated counterclockwise 40 degree around central axis O2, from the relative position relation of rotor 2 after eccentric axis O1 is rotated counterclockwise 30 degree;

Fig. 5 is with respect to Fig. 3, and rotor shaft 1 is rotated counterclockwise 80 degree around central axis O2, from the relative position relation of rotor 2 after eccentric axis O1 is rotated counterclockwise 60 degree;

Fig. 6 is with respect to Fig. 3, and rotor shaft 1 is rotated counterclockwise 120 degree around central axis O2, from the relative position relation of rotor 2 after eccentric axis O1 is rotated counterclockwise 90 degree;

Fig. 7 is with respect to Fig. 3, and rotor shaft 1 is rotated counterclockwise 180 degree around central axis O2, from the relative position relation of rotor 2 after eccentric axis O1 is rotated counterclockwise 135 degree;

Fig. 8 is with respect to Fig. 3, and rotor shaft 1 is rotated counterclockwise 240 degree around central axis O2, from the relative position relation of rotor 2 after eccentric axis O1 is rotated counterclockwise 180 degree;

Fig. 9 is with respect to Fig. 3, and rotor shaft 1 is rotated counterclockwise 360 degree around central axis O2, from the relative position relation of rotor 2 after eccentric axis O1 is rotated counterclockwise 270 degree;

Figure 10 is with respect to Fig. 3, and rotor shaft 1 is rotated counterclockwise 480 degree around central axis O2, from the relative position relation of rotor 2 after eccentric axis O1 is rotated counterclockwise 360 degree.

Figure 11 is the perspective view of rotor shaft 1.

Figure 12 is a rotor shaft 1 and from the cambered surface line construction drawing of rotor 2.

Embodiment

In conjunction with accompanying drawing and embodiment, further structure and the working principle to the utility model elaborates.

A kind of pressure air bag compensation sealing three Space Rotor pumps; Comprise the pump housing 4 and be installed on rotor shaft 1 and off-centre half hole 42 that is installed in the pump housing 4 on the central through bore 41 of the pump housing 4 from rotor 2; The work inner end of two rotors is pasting the bottom plane 40 in eccentric half hole 42; The horizontal frontal plane of compensating disc 6 is also being pasted in the work exterior edge face of two rotors, and the exterior edge face, working area in eccentric half hole 42 has the screw 8 of at least three of eccentric end cap 5 usefulness airtight fixing; Central through bore on the pump housing 4 is with " O " type ring recess for 41 li; Has eccentric distance t between the eccentric axis O1 in the central axis O2 of central through bore 41 and eccentric half hole 42; Crescent shape suction inlet 47 UNICOMs on the bottom surface, eccentric half hole 40 import 46; Another crescent shape row mouthful 48 UNICOMs outlet 49, and the exterior edge face, working area in eccentric half hole 42 has at least three screws 45 to be fixedly connected with screw 8, and screw 45 is branch layouts such as the center of circle with eccentric axis O1; Rotor shaft 1 comprises three five equilibrium cambered surface active sections 13 and does not have keyway shaft part 11 and shaft with keyway section 12; The inner end of three five equilibrium cambered surface active sections 13 is pasting bottom surface, eccentric half hole 40; The exterior edge face of three five equilibrium cambered surface active sections 13 is being pasted by the horizontal frontal plane of compensating disc 6; From rotor 2 complete section of four five equilibrium cambered surfaces are arranged, the size equal uniform of the width of full section both ends of the surface and the both ends of the surface width of three five equilibrium cambered surface active sections 13; Band " O " type ring recess through hole 51 on the eccentric end cap 5 is coaxial with central axis O2; Band " O " type ring recess through hole 51 is slidingly matched with no keyway shaft part 11; Outer circular edge along eccentric end cap 5 has three unthreaded holes 55 that can pass screw 8 at least; Unthreaded hole 55 is branch layouts such as the center of circle with eccentric axis O1, and locating stud 7 is fastened on the eccentric end cap 5 inboard faces; Has eccentric distance t between the eccentric axis O1 of the central axis O2 of the band on the compensating disc 6 " O " type ring recess through hole 61 and band " O " type ring recess cylindrical 62; Hold a pressure air bag 9 in the back side re-entrant angle 69 of compensating disc 6, the eccentric positioning hole 67 and the locating stud 7 of compensating disc 6 are slidingly matched; The central axis O2 of rotor shaft 1 and between the eccentric axis O1 of rotor 2, have eccentric distance t; Three five equilibrium cambered surface active sections 13 of rotor shaft 1 and from three point of contact of synchronized generation between four five equilibrium cambered surfaces of rotor 2; Cross point of contact and form three axially extended sealing strips; Horizontal frontal plane in conjunction with bottom surface, eccentric half hole 40 and compensating disc 6; Constitute A, B and three dynamic spaces of C, locating stud 7 and pressure air bag 9 are arranged between the back side of described compensating disc 6 and the eccentric end cap 5, this pressure air bag 9 presents ring-type.

Figure 12 is in order to illustrate rotor shaft 1 and from the cambered surface line working process of rotor 2:

Elder generation setting-out X and vertical with it line Y1 and line Y2, intersection point is respectively O1, O2, and O1 and O2 have eccentric distance t. apart to set eccentric distance t here are 6mm;

With O1 is the center of circle, and R1 is that radius is made basic circle R1.Here getting the R1 radius is 60mm;

An intersection point with basic circle R1 and line X is the center of circle, and R2 is that radius is made arc section R2, is the center of circle again with O1, and arc section R2 is displayed around O1 trisection annular.Here getting the R2 radius is 40mm;

The distance that is extended to R3 with the intersection point of arc section R2 and line X is the center of circle, is that the intersection point that radius is crossed arc section R2 and line X is made arc section R3 with R3, is the center of circle again with O2, with arc section R3 around O2 trisection annular display.Here getting the R3 radius is 120mm;

Choose two arc section R3 and an arc section R2 respectively, the three-way tangent arc section R4 that does gets the R4 radius here and is approximately 4.7mm;

With R5 is that radius is made two adjacent arc section R2 of arc section R5 connection respectively, and the R5 radius is 32mm here.

Article three, arc section R4 alternately with three point of contact of three arc section R2 synchronized generation, cross point of contact and form three axially extended sealing strips, constitute A, B and three dynamic spaces of C.Experience is long-term use uniform wear after, three point of contact of synchronized generation form three axially extended sealing strips can guarantee that still three axially extended sealing strips form synchronously, that guarantees three dynamic spaces radially is in effective sealing all the time.

The both ends of the surface width of three five equilibrium cambered surface active sections 13 of rotor shaft 1 and size equal uniform from the both ends of the surface width of rotor 2; Here getting the both ends of the surface width all is 50mm; The inner end of two rotors is all pasting bottom surface, eccentric half hole 40, and the horizontal frontal plane of compensating disc 6 is pasting the exterior edge face of two rotors simultaneously.Lean against the rebounding force that on the inboard face of eccentric end cap 5, produces by means of pressure air bag 9; The horizontal frontal plane of compensating disc 6 is close to the exterior edge face of two rotors all the time; Then force the inner end of two rotors also to be close to bottom surface, eccentric half hole 40, guarantee that the end face slip of three dynamic spaces is in effective sealing all the time.

Installation steps and working principle:

The shaft with keyway section 12 of rotor shaft 1 is 40 1 sides from bottom surface, off-centre half hole, pass central through bore 41 and are slidingly matched with it, and the inner end of three five equilibrium cambered surface active sections 13 is pasting bottom surface, eccentric half hole 40.Be placed in eccentric half hole 42 from rotor 2 and be slidingly matched, also pasting bottom surface, eccentric half hole 40 from the inner end of rotor 2;

The horizontal frontal plane of compensating disc 6 inwardly; Band " O " type ring recess through hole 61 is inserted in from no keyway shaft part 11 1 ends of rotor shaft 1 and is slidingly matched; Band " O " type ring recess cylindrical 62 is slidingly matched with eccentric half hole 42; The horizontal frontal plane of compensating disc 6 is pasting the work exterior edge face of two rotors, and the inner ring of pressure air bag 9 is enclosed within on the back side re-entrant angle 69 of compensating disc 6.

The back side of compensating disc 6 has positioning hole 67 and locating stud 7 to be slidingly matched, and locating stud 7 is fastenedly connected with eccentric end cap 5, thereby compensating disc 6 can only be made axial slip with respect to eccentric end cap 5.

Band " O " type ring recess through hole 51 on the eccentric end cap 5 is inserted in from no keyway shaft part 11 1 ends of rotor shaft 1 and is slidingly matched, and makes locating stud 7 aim at eccentric positioning hole 67.Eight M6 screws 8 pass unthreaded hole 55, on the airtight screw 45 that is fixed on the pump housing 4 of eccentric end cap 5 shimmings 54.

" O " type circle in all " O " type ring recess plays the motive sealing effect at position of living in.

During work, external force drives rotor shaft 1 rotation through shaft with keyway section 12, stirs then from rotor 2 rotations.From both rotating center deviation distances of rotor 2 and rotor shaft 1 is 6 millimeters; Three five equilibrium cambered surface active sections 13 of rotor shaft 1 and from three axially extended sealing strips of synchronized generation between three five equilibrium cambered surfaces of rotor 2; Horizontal frontal plane in conjunction with bottom surface, eccentric half hole 40 and compensating disc 6 constitutes A, B and three dynamic spaces of C.During rotation, A, B and three dynamic spaces of C along with rotation will become a big side gradually and be crescent shape suction inlet 47, lead to import 46; One side that will diminish gradually along with rotation of A, B and three dynamic spaces of C is a crescent shape row mouth 48, leads to outlet 49.Rotor shaft 1 continuously rotation order about A, B and three dynamic spaces of C go round and begin again accomplish inhale, row's work.

Claims

1. pressure air bag compensation sealing three Space Rotor pumps; Comprise the pump housing (4) and be installed in the rotor shaft (1) on the central through bore (41) of the pump housing (4) and be installed on off-centre half hole (42) of the pump housing (4) from rotor (2); The work inner end of two rotors is pasting the bottom plane (40) in eccentric half hole (42); The horizontal frontal plane of compensating disc (6) is also being pasted in the work exterior edge face of two rotors, and the exterior edge face, working area in eccentric half hole (42) has eccentric end cap (5) next airtight fixing with at least three screw (8); " O " type ring recess, the central axis O of central through bore (41) are with in central through bore (41) lining on the pump housing (4) ₂Eccentric axis O with off-centre half hole (42) ₁Between have eccentric distance t; Crescent shape suction inlet (47) UNICOM on the eccentric bottom surface, half hole (40) import (46); Another crescent shape row mouthful (48) UNICOM outlet (49); And the exterior edge face, working area in eccentric half hole (42) has at least three screws (45) to be fixedly connected with screw (8), and screw (45) is branch layouts such as the center of circle with eccentric axis O1; Rotor shaft (1) comprises three five equilibrium cambered surface active sections (13) and does not have keyway shaft part (11) and shaft with keyway section (12); The inner end of three five equilibrium cambered surface active sections (13) is pasting bottom surface, eccentric half hole (40); The exterior edge face of three five equilibrium cambered surface active sections (13) is being pasted by the horizontal frontal plane of compensating disc (6); From rotor (2) complete section of four five equilibrium cambered surfaces are arranged, the size equal uniform of the width of full section both ends of the surface and the both ends of the surface width of three five equilibrium cambered surface active sections (13); Band " O " type ring recess through hole (51) on the eccentric end cap (5) and central axis O ₂Coaxial, band " O " type ring recess through hole (51) is slidingly matched with no keyway shaft part (11), has three unthreaded holes (55) that can pass screw (8) at least along the outer circular edge of eccentric end cap (5), and unthreaded hole (55) is with eccentric axis O ₁For branches such as the center of circle arrange that locating stud (7) is fastened on the inboard face of eccentric end cap (5); The central axis O of band " O " the type ring recess through hole (61) on the compensating disc (6) ₂Eccentric axis O with band " O " type ring recess cylindrical (62) ₁Between have eccentric distance t, hold a pressure air bag (9) in the back side re-entrant angle (69) of compensating disc (6), the eccentric positioning hole (67) of compensating disc (6) and locating stud (7) are slidingly matched; The central axis O of rotor shaft (1) ₂With eccentric axis O from rotor (2) ₁Between have eccentric distance t; Three five equilibrium cambered surface active sections (13) of rotor shaft (1) and from three point of contact of synchronized generation between four five equilibrium cambered surfaces of rotor (2); Cross point of contact and form three axially extended sealing strips,, constitute A, B and three dynamic spaces of C in conjunction with the horizontal frontal plane of bottom surface, eccentric half hole (40) and compensating disc (6); It is characterized in that: locating stud (7) and pressure air bag (9) are arranged between the back side of described compensating disc (6) and the eccentric end cap (5), and this pressure air bag (9) presents ring-type.