CN2310183Y

CN2310183Y - Teeth type end face exhausting blower

Info

Publication number: CN2310183Y
Application number: CN 97239700
Authority: CN
Inventors: 彭学院; 束鹏程
Original assignee: Xian Jiaotong University
Current assignee: Xian Jiaotong University
Priority date: 1997-06-17
Filing date: 1997-06-17
Publication date: 1999-03-10
Anticipated expiration: 2007-06-17

Abstract

The utility model relates to a teeth type end face exhausting blower, belonging to a gas power mechanism. Both ends of a rotor are provided with cover plates to increase the through-flow area of the opening of an exhausting hole to be corresponding to the utility model. The cover plates of the driving rotor, the driven rotor and both ends of the rotor are respectively composed of straight lines which are connected each other, envelope lines of the straight lines, circular arcs, the envelope lines of the circular arcs, point gearing cycloids, etc. The utility model has the advantages of low flow velocity for exhaust, small flow resistance, low power consumption and wide flow-rate range.

Description

A kind of tooth-like blower of end face exhaust

The utility model relates to a kind of tooth-like blower of end face exhaust, belongs to aerodynamic machinery.

Tooth-like blower has interior compression process, the Roots blower that holds compression is energy-conservation than waiting, it keeps simple in structure, the reliable advantage of Roots blower again simultaneously, thereby be the energy-conservation substitute products of a kind of more satisfactory Roots blower, in addition, tooth-like blower is as a kind of rotary compressor, can be widely used in the field that general rotary compressor is suitable for, existing tooth-like blower all adopts the end face exhaust structure, the exhaust flow area that this structure has is little, exhaust airstream speed is big, thereby wasted work is many, limits it and develops to big direction of the traffic.

The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, proposes a kind of tooth-like blower of end face exhaust, by improving existing tooth-like blower end face exhaust structure, increase the vent ports flow area, reduce exhaust resistance, reduce the power consumption of machine, expand its flow using scope.

The technical solution of the utility model is: have casing, left side wallboard, right wallboard, the tooth-like blower of the end face exhaust of gear-box and bearing housing, on casing, have radial suction, left side wallboard and right wallboard lay respectively at the left side of casing, right both sides, wallboard left side, a left side is a gear-box, right wallboard right side is a bearing housing, two intermeshing synchromesh gears in the gear-box, be installed in respectively on active rotating shaft and the driven spindle, two rotating shafts are respectively by the bearing supporting that is contained on left wallboard and the right wallboard, near chassis end sealing gland is housed all in left side wallboard and the right wallboard, between sealing gland and the bearing oil sealing is housed, intermeshing power rotor and driven rotor are arranged in the casing, connect with active rotating shaft and driven spindle respectively, two ends of rotor respectively has a pair of intermeshing power rotor cover plate and driven rotor cover plate, the rotating inertia force that rotor and cover plate off-centre cause is by the equilibrium block at rotating shaft two ends balance in addition, on left wallboard and right wallboard, with driven rotor cover plate adjacent portion, the exhaust cavity of offering effigurate end face vent ports and communicating with vent ports, a left side, exhaust cavity on the right wallboard communicates with the exhaust passage on the casing, meet at the exhaust outlet on the casing then, active rotating shaft is protruding from the through hole on the bearing housing, can coupling or belt pulley be installed on outrigger shaft by key connecting, the through hole is equipped with oil sealing on the bearing housing.

Technique effect of the present utility model is: because the engagement of rotor, by casing, a rotor and a left side, the variation of the element volume generating period that right wallboard constitutes, gas entered in the element volume from the air-breathing aperture on the housing when element volume increased, gas was compressed when element volume reduced, when pressure equals the needed exhaust pressure of user, gas is discharged to exhaust cavity from the end face vent ports in the element volume, enter the exhaust passage on the housing then, exhaust outlet from the housing is discharged at last, what same tooth-like blower in the past was different is, this model utility has increased cover plate in the rotor both sides, because the driven rotor cover plate is bigger than driven rotor, thereby has bigger flow area than vent ports by the decision of driven rotor size by the vent ports of driven rotor cover plate size decision, this model utility has low exhaust resistance and low power consumption as a result, produces energy-saving effect.

Below in conjunction with accompanying drawing this model utility is described in detail.

Fig. 1 is the sectional view of the tooth-like blower of end face exhaust along Fig. 2 A-A line;

Fig. 2 is the sectional view of the tooth-like blower of end face exhaust along Figure 1B-B line;

Fig. 3 is the face type line chart of power rotor and driven rotor among Fig. 1 and Fig. 2;

Fig. 4 is the face type line chart of power rotor cover plate and driven rotor cover plate among Fig. 1 and Fig. 2.

Casing 13 and left wallboard 8, between the right wallboard 16, and between left wallboard 8 and the gear-box 3, between right wallboard 16 and the bearing housing 18, utilize two locating stud location respectively, and connect fastening with the circumferential equally distributed bolt in some edges, respectively adorn a roller bearing that axially can move about 1 in two bearing supports on the wallboard 8 of a left side, respectively adorn a ball bearing 17 that axial restraint is motionless in two bearing supports on the right wallboard 16, active rotating shaft 20 and driven spindle 21 are bearing in pair of bearings 1 separately, in 17, and employing transition fit and bearing 1,17 inner rings connect, sidepiece near casing 13 in left side wallboard 8 and the right wallboard 16 has sealing gland 10, sealing gland 10 is simple and easy labyrinth seal, leave slight radial clearance between sealing gland 10 inner rings and active rotating shaft 20 or the driven spindle 21, the outer ring is at wallboard 8, utilize transition fit to be connected and fixed in 16, sealing gland 10 is by the end face and the wallboard 8 of casing 13 1 sides, the end face of 16 homonymies, at wallboard 8, sealing gland 10 and bearing 1 in 16, between 17, utilize transition fit that oil sealing 9 is installed, oil sealing 9 and rotating shaft 20, leave slight radial clearance between 21, on active rotating shaft 20 and driven spindle 21, near the left side of roller bearing 1 and the right side of ball bearing 17, equilibrium block 7 all is housed, equilibrium block 7 is by key connecting and rotating shaft 20, do circumferentially location and fixing between 21, synchromesh gear 6 right-hand members are near equilibrium block 7, left end is done circumferentially location and fixing by ringfeder 5, compress ringfeder 5 by round nut 4 again and make axial restraint, in bearing housing 18, equilibrium block 7 directly utilizes round nut 4 to make axial restraint, by being close to the realization axially locating with bearing 17, in the middle of driven spindle 21 right-hand members have two round nuts 4, clamp one and get rid of oily sheet 22, get rid of oily sheet 22 with driven rotating shaft 21 rotations, oil in the bearing housing 18 can be thrown away, thereby lubricated ball bearing 17, in the gear-

box

3,2/3rds of synchromesh gear 6 about tooth depths are immersed in the oil, lubricant oil is stirred Castor Oil himself and roller bearing 1, an oil ga(u)ge 2 respectively is housed with oil level in the inspection box on gear-box 3 and the bearing housing 18, casing 13, gear-box 3 and bearing housing 18 all adopt double-wall structure, outer field waterway is connected with circulating water and can cools off pressurized gas and lubricant oil, cooling water enters from gear-box 3 bottoms, flow out from bearing housing 18 tops, on left side wallboard 8 and the right wallboard 16 water channel is arranged all, with the waterway of gear-box 3 and the waterway of casing 13, and the waterway of casing 13 is communicated with the waterway of bearing housing 18, at left wallboard 8 and right wallboard 16 by on the end face of housing 13 1 sides, have circular row gas opening 23, wherein, the interior ring 31 of vent ports 23, outer shroud 30 all is to be the circular arc in the center of circle with driven spindle 21 centers, the root radius 35 big 4～10mm of the radius ratio driven rotor cover plate 11 of interior ring 31, the Outside radius 34 little 3～6mm of the radius ratio driven rotor cover plate 11 of outer shroud 30, the initial line 29 that rises of vent ports 23 be a radial alignment, and with exhaust initial angle 28 its positions of sign, the size of this angle changes in 150～300 degree scopes according to the difference of the required pressure of user, stopping limit 32 is one section circular arc, the center of circle is active rotating shaft 20 centers, and radius equals the Outside radius 34 of power rotor cover plate 12, at wallboard 8, there is exhaust cavity 24 to communicate in 16 with vent ports 23, exhaust cavity 24 is through smooth turnover transition, communicate with the exhaust passage 25 on the casing 13, converge at exhaust outlet 26 places again, intermeshing power rotor 14 and driven rotor 15 are arranged in casing 13, connect with active rotating shaft 20 and driven spindle 21 respectively, rotor 14, respectively there are a pair of intermeshing power rotor cover plate 12 and driven rotor cover plate 11 in 15 two ends, and cover plate shape in the same rotating shaft and size are identical,

rotor

14,15 and

rotor cover plate

12,11 respectively are made of their end face molded lines some specific curves.

The end face molded lines of power rotor 14 and driven rotor 15 is made up of straight line, lines enveloping line, circular arc, arc envelope line and point gearing cycloid.Power rotor 14 has identical Pitch radius 36 with driven rotor 15, Outside radius 34 and root radius 35, the ratio of Outside radius 34 and Pitch radius 36 sizes is for 1.2～1.4, both sums equal centre distance 33, on the power rotor 14 is 0.7～0.8 to round as a ball arc radius 37 with the ratio to round as a ball arc radius 38 sizes on the driven rotor 15, both sums equal centre distance 33, line segment 47 on the power rotor 14 is one section circular arc, its radius equals round as a ball arc radius 37, line segment 39 on the driven rotor 15 is one section circular arc with circular arc 47 conjugation, its radius equals round as a ball arc radius 38, line segment 54 on the power rotor 14 is a straight line, its end and circular arc 47 are tangent, line segment 40 with its conjugation on the driven rotor 15 is lines enveloping lines, one end and the circular arc 39 of line segment 40 are tangent, straight line 54 the other ends and a straight line envelope 53 on the power rotor 14 are tangent, straight line 41 conjugation on lines enveloping line 53 and the driven rotor 15, straight line 41 on the driven rotor 15 is tangent with lines enveloping line 40, lines enveloping line 53 the other ends and circular arc 52 are tangent on the power rotor 14, with the line segment of circular arc 52 conjugation are circular arcs 42 on the driven rotor 15, line segment 50 on the power rotor 14 is one section point gearing cycloid, cycloid 50 is with passing through transition arc 51 smooth connections between the circular arc 52, line segment 43 on the driven rotor 15 is the arc envelope lines that formed by transition arc 51 envelopes, between line segment 43 and the circular arc 45 by 44 smooth connections of transition arc, line segment 49 on the power rotor 14 is one section circular arc, 48 smooth connections of transition arc that equate by two sections radiuses between circular arc 49 and the circular arc 47, circular arc 45 and circular arc 39 are by 46 smooth connections of straight line on the driven rotor 15, circular arc 52 all equals Outside radius 34 with circular arc 45 radiuses, and circular arc 49 all equals root radius 35 with circular arc 42 radiuses.

Line segment 61 equals the circular arc of root radius 35 on the power rotor cover plate 12 for radius, line segment 60 equals the circular arc of Outside radius 34 on the driven rotor cover plate 11 for radius, circular arc 61 is made pure rolling with circular arc 60 in engagement process, line segment 66 is a straight line on the power rotor cover plate 12, its end and circular arc 61 are tangent, its the other end and lines enveloping line 65 are tangent, line segment 55 is a straight line envelope on the driven rotor cover plate 11, straight line 66 mutual conjugation on it and the power rotor cover plate 12, one end and the circular arc 60 of line segment 55 are tangent, the other end and straight line 56 are tangent, line segment 64 equals the circular arc of Outside radius 34 on the power rotor cover plate 12 for radius, radius equals the circular arc 57 mutual conjugation of root radius 35 on it and the driven rotor cover plate 11, line segment 62 is one section point gearing cycloid on the power rotor cover plate 12, it with circular arc 64 between by 63 smooth connections of transition arc, its the other end and circular arc 61 are tangent, line segment 58 is the arc envelope lines that formed by circular arc 63 envelopes on the driven rotor cover plate 11, its end and circular arc 57 are tangent, and the other end is by

transition arc

59 and 60 smooth connections of circular arc.

Claims

1, a kind of tooth-like blower of end face exhaust, comprise and have radial suction aperture 27 and exhaust passage 25, the casing 13 of exhaust outlet 26, the power rotor 14 and the power rotor cover plate 12 that match with active rotating shaft 20 in the casing 13, by synchromesh gear 6 and driven spindle 21 drive and with initiatively changeed 14 intermeshing driven rotors 15, and and power rotor cover plate 12 intermeshing driven rotor cover plates 11, supporting shaft 20,21 bearing 1,17, place bearing 1,17 and sealing gland 10, oil sealing 9 is also offered end face vent ports 23 and the left side of exhaust cavity 24, right wallboard 8,16, rotating shaft 20, the equilibrium block 7 that is used for balance rotating inertial force on 21, and left wallboard 8 left sides are used for the gear-box 3 of charge of oil, right wallboard 16 right sides are used for the bearing housing 18 of charge of oil, of the present utility model being characterised in that, said power rotor 14 is intermeshing conjugation straight-tooth rotors with driven rotor 15, power rotor cover plate 12 also is intermeshing conjugation straight-tooth rotor with driven rotor cover plate 11, the molded lines of rotor and cover plate has nothing in common with each other, but all by the straight line that is connected with each other, the lines enveloping line, circular arc, arc envelope line and point gearing cycloid are formed.

2, blower according to claim 1, it is characterized in that, the molded lines of said power rotor 14 comprises that a radius is the circular arc 47 to round as a ball arc radius 37, the straight line 54 tangent with circular arc 47, the other end of straight line and lines enveloping line 53 are tangent, it is tangent that the same radius of the other end of lines enveloping line 53 equals the circular arc 52 of Outside radius 34, between circular arc 52 and the point gearing cycloid 50 by 51 smooth connections of transition arc, it is tangent that the same radius of the other end of point gearing cycloid 50 equals the circular arc 49 of root radius 35, circular arc 49 with between the circular arc 47 by the 48 smooth connections of radius two equal segments transition arc.

3, blower according to claim 1, it is characterized in that, the molded lines of said driven rotor 15 comprises that a radius is the circular arc 39 to round as a ball arc radius 38, the lines enveloping line 40 tangent with circular arc 39, the other end of lines enveloping line 40 and straight line 41 are tangent, it is tangent that the other end of straight line 41 and radius equal the circular arc 42 of root radius 35, the other end of circular arc 42 and arc envelope line 43 are tangent, arc envelope line 43 equals with radius between the circular arc 45 of Outside radius 34 by transition arc 44 smooth connections, circular arc 45 with between the circular arc 39 by straight line 46 smooth connections.

4, blower according to claim 1, it is characterized in that, the molded lines of said power rotor cover plate 12 comprises that a radius equals the circular arc 61 of root radius 35, the straight line 66 tangent with circular arc 61, the other end of straight line 66 and lines enveloping line 65 are tangent, it is tangent that the same radius of the other end of lines enveloping line 65 equals the circular arc 64 of Outside radius 34, and by 63 smooth connections of transition arc, the other end of point gearing cycloid 62 is tangent with circular arc 61 between circular arc 64 and the point gearing cycloid 62.

5, blower according to claim 1, it is characterized in that, the molded lines of said driven rotor cover plate 11 comprises that a radius equals the circular arc 60 of Outside radius 34, the lines enveloping line 55 tangent with circular arc 60, the other end of lines enveloping line 55 and straight line 56 are tangent, the other end of straight line 56 is tangent with the circular arc 57 that equals root radius 35 with radius, and the other end of circular arc 57 and arc envelope line 58 are tangent, and arc envelope line 58 is with passing through transition arc 59 smooth connections between the circular arc 60.