CN108266373B - Elastic composite spiral axial pump - Google Patents

Elastic composite spiral axial pump Download PDF

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Publication number
CN108266373B
CN108266373B CN201711381510.8A CN201711381510A CN108266373B CN 108266373 B CN108266373 B CN 108266373B CN 201711381510 A CN201711381510 A CN 201711381510A CN 108266373 B CN108266373 B CN 108266373B
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China
Prior art keywords
transmission shaft
shaft
arc
driven
inner ring
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CN201711381510.8A
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Chinese (zh)
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CN108266373A (en
Inventor
许静
连加俤
范少超
刘国栋
倪敬
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Hangzhou Dianzi University
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Hangzhou Dianzi University
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00Rotary-piston machines or pumps
    • F04C2/08Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/16Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00Components
    • F04C2240/20Rotors

Abstract

The invention discloses an elastic composite spiral axial pump, which comprises a driving transmission shaft, a driven transmission shaft, a third transmission shaft, a shell, a wear-resistant inner ring and supporting ribs, wherein the driving transmission shaft is connected with the third transmission shaft; a driving transmission shaft, a driven transmission shaft and a third transmission shaft are rotatably arranged in the shell, a first driving gear on the driving transmission shaft is meshed with a first driven gear on the driven transmission shaft, and a second driving gear on the driven transmission shaft is meshed with a second driven gear on the third transmission shaft; the third transmission shaft is provided with a first spiral blade shaft, the driven transmission shaft is provided with a second spiral blade shaft, and the first spiral blade shaft is mutually matched with the second spiral blade shaft; sealing devices are arranged on the driven transmission shaft and the third transmission shaft to divide the inner cavity of the shell into a transmission cavity and a liquid conveying cavity; the invention has simple structure, good abrasion resistance effect and high conveying efficiency, and can be widely popularized and applied.

Description

Elastic composite spiral axial pump
Technical Field
The invention relates to the technical field of spiral axial pumps, in particular to the technical field of elastomer composite spiral axial pumps.
Background
The spiral axial pump is characterized in that the clearance between a pump shell and blades is small, the water flow loss is small, the pump efficiency is high, the lift is high, and the like, so that the spiral axial pump is widely applied in industry, but the blade molded lines of the traditional spiral pump have sharp corners, the transition is not smooth, the conjugation mode is dotted line conjugation, the sharp corners are easy to abrade in transmission application, so that the sealing effect is poor, the water or liquid loss is more, the pump efficiency is very low, the conveying pressure is reduced, meanwhile, the pump body is easy to vibrate strongly in the working process, the instability of the pump is increased, the use of people is seriously influenced, and the spiral axial pump is required to be improved and designed aiming at the problems existing in the spiral axial pump, so that the spiral axial pump not only can ensure the good blade clearance, but also can ensure good stability.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides an elastic composite spiral axial pump which can ensure that the spiral axial pump has better sealing performance, less abrasion of blades, high conveying pressure and good trafficability.
In order to achieve the above purpose, the invention provides an elastic composite helical axial pump, which comprises a driving transmission shaft, a driven transmission shaft, a third transmission shaft, a casing, a wear-resistant inner ring and supporting ribs; a driving transmission shaft, a driven transmission shaft and a third transmission shaft are rotatably arranged in the shell, a first driving gear on the driving transmission shaft is meshed with a first driven gear on the driven transmission shaft, and a second driving gear on the driven transmission shaft is meshed with a second driven gear on the third transmission shaft; the third transmission shaft is provided with a first spiral blade shaft, the driven transmission shaft is provided with a second spiral blade shaft, and the first spiral blade shaft is mutually matched with the second spiral blade shaft; sealing devices are arranged on the driven transmission shaft and the third transmission shaft to divide the inner cavity of the shell into a transmission cavity and a liquid conveying cavity;
the side view molded line of the first spiral blade shaft is symmetrical about the horizontal central line of the first spiral blade shaft, and the molded line at the lower side of the horizontal central line sequentially comprises an arc HA, a cycloid AB, a cycloid BC, an arc CD, an arc DE, an arc EF and an arc FG, and adjacent molded lines are tangent; the side view molded line of the second spiral blade shaft is symmetrical about the horizontal central line, and the molded line at the lower side of the horizontal central line is sequentially formed by an arc H 'A', a cycloid A 'B', a cycloid B 'C', an arc C 'D', an arc D 'E', an arc E 'F' and an arc F 'G', and adjacent molded lines are tangent; the cycloid AB is conjugated with an arc E 'F', the cycloid BC is conjugated with an arc D 'E', the arc DE is conjugated with a cycloid B 'C', the arc EF is conjugated with a cycloid A 'B', the arc FG is conjugated with an arc H 'A', and the arc F 'G' is conjugated with an arc HA;
the radius of the framework fillet on the supporting framework of the first spiral vane shaft and the second spiral vane shaft is 1.5mm-3.5mm, the outer side of the supporting framework is covered with a rubber layer, the thickness of the rubber layer is 4.6mm-15.8mm, and the radius of the rubber fillet on the rubber layer is 0.1-0.4mm.
Preferably, the inner side wall of the shell is further provided with a wear-resistant inner ring, the wear-resistant inner ring is coated on the outer sides of the first spiral blade shaft and the second spiral blade shaft, the inner wall of the wear-resistant inner ring is in contact with the outer side walls of the first spiral blade shaft and the second spiral blade shaft, the wear-resistant inner ring comprises an upper inner ring and a lower inner ring, and the upper inner ring is fixedly connected with the lower inner ring through supporting ribs.
Preferably, the first helical blade shaft, the second helical blade shaft and the wear-resistant inner ring are positioned inside the liquid conveying cavity; the first driving gear, the first driven gear, the second driving gear and the second driven gear are positioned in the transmission cavity; and a liquid inlet and a liquid outlet are formed in the outer side wall of the conveying cavity.
Preferably, the driving transmission shaft, the driven transmission shaft and the third transmission shaft are rotatably installed inside the casing through bearings, one end of the driving transmission shaft extends out of the casing, and a transmission key groove is formed in one end of the driving transmission shaft.
The invention has the beneficial effects that: according to the invention, the blade molded lines on the first spiral blade shaft and the second spiral blade shaft are formed by a plurality of sections of circular arcs or cycloids, and conjugate relations exist between the corresponding circular arcs or cycloids, so that the defect that the blade molded lines are not smooth is well avoided, and the wear-resisting effect of the blades is improved; the outer side of the supporting framework is covered with a rubber layer, the thickness of the rubber layer is 4.6mm-15.8mm, the radius of a rubber fillet on the rubber layer is 0.1-0.4mm, good sealing performance and conveying efficiency can be ensured when liquid transportation is carried out, and the liquid loss rate is greatly reduced; the invention has simple structure, good abrasion resistance effect and high conveying efficiency, and can be widely popularized and applied.
The features and advantages of the present invention will be described in detail by way of example with reference to the accompanying drawings.
Drawings
FIG. 1 is a front cross-sectional view of an elastic compound helical axial pump of the present invention;
FIG. 2 is a schematic view of the first and second helical vane shaft profiles of an elastic compound helical axial pump of the present invention;
FIG. 3 is a schematic side cross-sectional view of an elastic compound screw axial pump of the present invention;
FIG. 4 is a schematic perspective view of a first helical lobed shaft, a second helical lobed shaft, a wear-resistant inner ring and a support rib of an elastic compound helical axial pump of the present invention;
FIG. 5 is a schematic cross-sectional view of a first helical lobed shaft and a second helical lobed shaft of an elastic compound helical axial pump of the present invention in meshed drive;
FIG. 6 is an enlarged schematic view of a first helical lobed shaft and a second helical lobed shaft of an elastic compound helical axial pump of the present invention in partial cross section.
In the figure: 1-driving transmission shaft, 2-first driving gear, 3-driven transmission shaft, 4-first driven gear, 5-second driving gear, 6-third transmission shaft, 7-second driven gear, 8-first helical blade shaft, 9-second helical blade shaft, 10-sealing device, 11-transmission cavity, 12-liquid delivery cavity, 13-casing, 14-liquid inlet, 15-liquid outlet, 16-arc HA, 17-cycloid AB, 18-cycloid BC, 19-arc CD, 20-arc DE, 21-arc EF, 22-arc FG, 23-arc H 'A', 24-cycloid A 'B', 25-cycloid B 'C', 26-arc C 'D', 27-arc D 'E', 28-arc E 'F', 29-arc F 'G', 30-wear-resistant inner ring, 31-supporting rib, 32-supporting framework, 33-framework fillet, 34-rubber fillet, 35-rubber layer.
Detailed Description
Referring to fig. 1-6, the elastic composite helical axial pump of the invention comprises a driving transmission shaft 1, a driven transmission shaft 3, a third transmission shaft 6, a casing 13, a wear-resistant inner ring 30 and supporting ribs 31; the driving transmission shaft 1, the driven transmission shaft 3 and the third transmission shaft 6 are rotatably arranged in the casing 13, a first driving gear 2 on the driving transmission shaft 1 is meshed with a first driven gear 4 on the driven transmission shaft 3, and a second driving gear 5 on the driven transmission shaft 3 is meshed with a second driven gear 7 on the third transmission shaft 6; the third transmission shaft 6 is provided with a first spiral blade shaft 8, the driven transmission shaft 3 is provided with a second spiral blade shaft 9, and the first spiral blade shaft 8 and the second spiral blade shaft 9 are mutually matched; the driven transmission shaft 3 and the third transmission shaft 6 are provided with a sealing device 10 which divides the inner cavity of the shell 13 into a transmission cavity 11 and a liquid conveying cavity 12; the side view molded line of the first spiral vane shaft 8 is symmetrical about the horizontal central line, and the molded line at the lower side of the horizontal central line sequentially comprises an arc HA16, a cycloid AB17, a cycloid BC18, an arc CD19, an arc DE20, an arc EF21 and an arc FG22, and adjacent molded lines are tangent; the side view molded line of the second helical blade shaft 9 is symmetrical about the horizontal central line, and the molded line at the lower side of the horizontal central line sequentially consists of an arc H 'A'23, a cycloid A 'B'24, a cycloid B 'C'25, an arc C 'D'26, an arc D 'E'27, an arc E 'F'28 and an arc F 'G'29, and the adjacent molded lines are tangent; the cycloid AB17 is conjugated with an arc E 'F'28, the cycloid BC18 is conjugated with an arc D 'E'27, the arc DE20 is conjugated with a cycloid B 'C'25, the arc EF21 is conjugated with a cycloid A 'B'24, the arc FG22 is conjugated with an arc H 'A'23, and the arc F 'G'29 is conjugated with an arc HA 16; the radius of a framework fillet 33 on a supporting framework 32 of the first spiral vane shaft 8 and the second spiral vane shaft 9 is 1.5mm-3.5mm, a rubber layer 35 is covered on the outer side of the supporting framework 32, the thickness of the rubber layer 35 is 4.6mm-15.8mm, and the radius of a rubber fillet 34 on the rubber layer 35 is 0.1-0.4mm; the inner side wall of the shell 13 is also provided with a wear-resistant inner ring 30, the wear-resistant inner ring 30 is coated on the outer sides of the first spiral vane shaft 8 and the second spiral vane shaft 9, the inner wall of the wear-resistant inner ring 30 is contacted with the outer side walls of the first spiral vane shaft 8 and the second spiral vane shaft 9, the wear-resistant inner ring 30 comprises an upper inner ring and a lower inner ring, and the upper inner ring and the lower inner ring are fixedly connected through a supporting rib 31; the first spiral vane shaft 8, the second spiral vane shaft 9 and the wear-resistant inner ring 30 are positioned inside the liquid conveying cavity 12; the first driving gear 2, the first driven gear 4, the second driving gear 5 and the second driven gear 7 are positioned in the transmission cavity 11; a liquid inlet 14 and a liquid outlet 15 are arranged on the outer side wall of the conveying cavity 12; the driving transmission shaft 1, the driven transmission shaft 3 and the third transmission shaft 6 are rotatably installed inside the casing 13 through bearings, one end of the driving transmission shaft 1 extends out of the casing 13, and a transmission key groove is formed in one end of the driving transmission shaft 1.
The working process of the invention comprises the following steps:
in the working process of the elastic composite spiral axial pump, one end of the driving transmission shaft 1 and the transmission motor are transmitted through key transmission, the driving transmission shaft 1 rotates the driven transmission shaft 3 and the third transmission shaft 6 through the first driving gear 2, the first driven gear 4, the second driving gear 5 and the second driven gear, so that the first spiral vane shaft 8 and the second spiral vane shaft 9 rotate, liquid to be conveyed enters through the liquid inlet 14, and then is discharged from the liquid outlet 15 through the action of the first spiral vane shaft 8 and the second spiral vane shaft 9, and the conveying of the liquid is realized.
According to the invention, the blade molded lines on the first spiral blade shaft 8 and the second spiral blade shaft 9 are formed by a plurality of sections of circular arcs or cycloids, and conjugate relations exist between the corresponding circular arcs or cycloids, so that the defect that the blade molded lines are not smooth is well avoided, and the wear-resisting effect of the blades is improved; the outer side of the supporting framework 32 is covered with a rubber layer 35, the thickness of the rubber layer 35 is 4.6mm-15.8mm, the radius of a rubber fillet 34 on the rubber layer 35 is 0.1-0.4mm, good sealing performance and conveying efficiency can be ensured when liquid transportation is carried out, and the liquid loss rate is greatly reduced; the invention has simple structure, good abrasion resistance effect and high conveying efficiency, and can be widely popularized and applied.
The above embodiments are illustrative of the present invention, and not limiting, and any simple modifications of the present invention fall within the scope of the present invention.

Claims (3)

1. An elastic composite helical axial pump, characterized in that: the novel anti-abrasion transmission device comprises a driving transmission shaft (1), a driven transmission shaft (3), a third transmission shaft (6), a machine shell (13), an abrasion-resistant inner ring (30) and supporting ribs (31), wherein the driving transmission shaft (1), the driven transmission shaft (3) and the third transmission shaft (6) are rotatably arranged in the machine shell (13), a first driving gear (2) on the driving transmission shaft (1) is meshed with a first driven gear (4) on the driven transmission shaft (3), and a second driving gear (5) on the driven transmission shaft (3) is meshed with a second driven gear (7) on the third transmission shaft (6); the third transmission shaft (6) is provided with a first spiral blade shaft (8), the driven transmission shaft (3) is provided with a second spiral blade shaft (9), and the first spiral blade shaft (8) is mutually matched with the second spiral blade shaft (9); the driven transmission shaft (3) and the third transmission shaft (6) are provided with sealing devices (10) for dividing the inner cavity of the shell (13) into a transmission cavity (11) and a liquid conveying cavity (12);
the side view molded line of the first spiral vane shaft (8) is symmetrical about a horizontal central line of the first spiral vane shaft, and the molded line at the lower side of the horizontal central line sequentially comprises an arc HA (16), a cycloid AB (17), a cycloid BC (18), an arc CD (19), an arc DE (20), an arc EF (21) and an arc FG (22), and adjacent molded lines are tangent; the side view molded line of the second spiral vane shaft (9) is symmetrical about the horizontal center line, and the molded line at the lower side of the horizontal center line sequentially comprises an arc H 'A' (23), a cycloid A 'B' (24), a cycloid B 'C' (25), an arc C 'D' (26), an arc D 'E' (27), an arc E 'F' (28) and an arc F 'G' (29), and adjacent molded lines are tangent; the cycloid AB (17) is conjugated with an arc E 'F' (28), the cycloid BC (18) is conjugated with an arc D 'E' (27), the arc DE (20) is conjugated with a cycloid B 'C' (25), the arc EF (21) is conjugated with a cycloid A 'B' (24), the arc FG (22) is conjugated with an arc H 'A' (23), and the F 'G' (29) is conjugated with an arc HA (16);
the radius of a framework fillet (33) on a supporting framework (32) of the first spiral blade shaft (8) and the second spiral blade shaft (9) is 1.5mm-3.5mm, a rubber layer (35) is covered on the outer side of the supporting framework (32), the thickness of the rubber layer (35) is 4.6mm-15.8mm, and the radius of a rubber fillet (34) on the rubber layer (35) is 0.1-0.4mm;
the inner side wall of the shell (13) is further provided with a wear-resistant inner ring (30), the wear-resistant inner ring (30) is coated on the outer sides of the first spiral blade shaft (8) and the second spiral blade shaft (9), the inner wall of the wear-resistant inner ring (30) is contacted with the outer side walls of the first spiral blade shaft (8) and the second spiral blade shaft (9), the wear-resistant inner ring (30) comprises an upper inner ring and a lower inner ring, and the upper inner ring and the lower inner ring are fixedly connected through supporting ribs (31).
2. An elastic compound screw axial pump according to claim 1, characterized in that: the first spiral vane shaft (8), the second spiral vane shaft (9) and the wear-resistant inner ring (30) are positioned in the liquid conveying cavity (12); the first driving gear (2), the first driven gear (4), the second driving gear (5) and the second driven gear (7) are positioned in the transmission cavity (11); the outer side wall of the conveying cavity (12) is provided with a liquid inlet (14) and a liquid outlet (15).
3. An elastic compound screw axial pump according to claim 1, characterized in that: the driving transmission shaft (1), the driven transmission shaft (3) and the third transmission shaft (6) are rotatably installed inside the casing (13) through bearings, one end of the driving transmission shaft (1) extends out of the casing (13), and a transmission key groove is formed in one end of the driving transmission shaft (1).
CN201711381510.8A 2017-12-20 2017-12-20 Elastic composite spiral axial pump Active CN108266373B (en)

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Application Number Priority Date Filing Date Title
CN201711381510.8A CN108266373B (en) 2017-12-20 2017-12-20 Elastic composite spiral axial pump

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Application Number Priority Date Filing Date Title
CN201711381510.8A CN108266373B (en) 2017-12-20 2017-12-20 Elastic composite spiral axial pump

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CN108266373A CN108266373A (en) 2018-07-10
CN108266373B true CN108266373B (en) 2023-06-30

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1751408A1 (en) * 1990-03-17 1992-07-30 Производственное Объединение Гидравлических Машин "Ливгидромаш" Им.60-Летия Союза Сср Positive-displacement rotary machine
RU2113622C1 (en) * 1996-03-17 1998-06-20 Акционерное общество "Ливгидромаш" Revolving rotor machine
CN103388580A (en) * 2013-08-02 2013-11-13 浙江大学 Split type mechanical seal and double-screw pump with same
CN203308712U (en) * 2013-06-07 2013-11-27 淄博瑞莱特真空设备有限公司 Variable-pitch double-thread screw vacuum pump
CN107023480A (en) * 2017-05-12 2017-08-08 中国石油大学(华东) A kind of complete smooth twin-screw liquid pump screw rotor
CN207583624U (en) * 2017-12-20 2018-07-06 杭州电子科技大学 A kind of elastic composite spiral axial pump

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1751408A1 (en) * 1990-03-17 1992-07-30 Производственное Объединение Гидравлических Машин "Ливгидромаш" Им.60-Летия Союза Сср Positive-displacement rotary machine
RU2113622C1 (en) * 1996-03-17 1998-06-20 Акционерное общество "Ливгидромаш" Revolving rotor machine
CN203308712U (en) * 2013-06-07 2013-11-27 淄博瑞莱特真空设备有限公司 Variable-pitch double-thread screw vacuum pump
CN103388580A (en) * 2013-08-02 2013-11-13 浙江大学 Split type mechanical seal and double-screw pump with same
CN107023480A (en) * 2017-05-12 2017-08-08 中国石油大学(华东) A kind of complete smooth twin-screw liquid pump screw rotor
CN207583624U (en) * 2017-12-20 2018-07-06 杭州电子科技大学 A kind of elastic composite spiral axial pump

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