CN101737322A - Design method of double-rotor internal-rotation constant pressure pump - Google Patents
Design method of double-rotor internal-rotation constant pressure pump Download PDFInfo
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- CN101737322A CN101737322A CN200810232246A CN200810232246A CN101737322A CN 101737322 A CN101737322 A CN 101737322A CN 200810232246 A CN200810232246 A CN 200810232246A CN 200810232246 A CN200810232246 A CN 200810232246A CN 101737322 A CN101737322 A CN 101737322A
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Abstract
The invention relates to a design method of a double-rotor internal-rotation constant pressure pump, which is characterized in that the inner surface of a pump body (1) is provided with two groups of spiral grooves with opposite rotary directions, the normal sections of the spiral grooves are rectangular, and two eccentric sleeves (4) with opposite eccentric directions are sleeved on the axial surface of an eccentric shaft (5); two groups of spiral groove bodies (2) with opposite rotary directions are sleeved between the pump body (1) and the eccentric shaft (5), and two circular tracks (6) are respectively fixed on end covers at the outer end faces of the two groups of spiral groove bodies (2) with opposite rotary directions; a liquid inlet is respectively arranged at both ends of the pump body (1) and a liquid outlet is arranged at the middle part of the pump body (1) between the two groups of spiral groove bodies (2); and the inner surfaces of the spiral groove bodies (2) and the outer surface of the eccentric sleeve (4) are connected by arcs, the eccentric shaft (5) is connected with an end cover body of the pump body (1) by a bearing, and a liquid inlet and a liquid outlet are arranged at both ends of the pump body (1) or on the end cover body. The invention has high output pressure, good internal sealing effect, small volume, low noise and low energy consumption, can change the flow rate at constant pressure and can carry out the mixed output of liquid and gas.
Description
Technical field
The invention belongs to the design method of a kind of design method of displacement pump, particularly a kind of double-rotor internal-rotation constant pressure pump.
Background technique
Along with the develop rapidly of China's modern industry, a kind of energy-saving and environmental protection of demand in a lot of fields, high-lift, pump product that delivery pressure is constant.It is the energy saving and environment friendly water pump of constant voltage that the variable flow amount again can be high-lift that the city high-floor feedwater is badly in need of; Advanced oil-gas multi-phase mixed delivering pump more is badly in need of in oil field, particularly offshore oilfield.Yet existing pump can't satisfy above requirement.
Reciprocating pump:, because complex structure and the pulsation of the height that back and forth causes, must cause that noise is big, mass flow discrepancy even, manufacture cost is high though easily realize high-liftly.
Centrifugal pump: because can't low cruise, pump housing clumsiness, higher and very difficult control flow rate consumes energy.
Screw pump: though the constant advantage of delivery pressure is arranged.But in let out big, volume is big, accuracy of manufacturing is higher.
Helical rotor pump: though advantages such as delivery pressure is constant, volume is less are arranged, rubber sleeve defeated high temperature media easy to wear, difficult and the difficult high pressure of realizing.
Gear pump: though low cost of manufacture, be widely used, noise is big, the life-span is short, be difficult for defeated high temperature media and the difficult high pressure of realizing.
Vane pump: complex structure, cost height.
Vortex pump: the cost height, have pulsation, discharge capacity little.
The double rotor volute pump is to be embedded in the main rotor cavity with the external diameter spiral spring identical with the power rotor internal diameter, is slidingly matched by the spiral chute on spiral spring and the driven rotor and works.The import of liquid and outlet are divided into the two ends of power rotor, and its lift only is 300 meters (about 3Mpa).Its main deficiency is: 1. this pump main rotor is a housing, and a spiral spring is embedded in the main rotor, is a minute body structure, and this structure is difficult to bear high pressure; 2. the sealing difficult problem between 300 meters explanations of lift spiral is solved as yet at all.
Summary of the invention
The design method that the purpose of this invention is to provide a kind of double-rotor internal-rotation constant pressure pump, its delivery pressure height, but fixed-voltage altering-current amount can liquid, gas mixes output, good seal and volume is little, noise is low, energy consumption is low, low cost of manufacture, applied range in its.
The object of the present invention is achieved like this, design a kind of design method of double-rotor internal-rotation constant pressure pump, this pump comprises the pump housing, eccentric shaft, end cap, seal ring, oil sealing, bearing, it is characterized in that: pump housing internal surface has two groups of spiral chutes that rotation direction is opposite, the spiral fluted Normal section is a rectangle, be with two eccentric bushings on the axial plane of eccentric shaft, eccentric direction is opposite; At the pump housing be with between the eccentric shaft of eccentric bushing and be with two groups of spiral cell bodies that rotation direction is opposite, the left-handed spiral chute on the pump housing internal surface of left side is identical with the external spiral groove shape of left side spiral cell body, and size matches and is meshing with each other, for left-handed to; Spiral chute on the pump housing internal surface of right side is identical with the external spiral groove shape of right-hand screw cell body, and size matches and is meshing with each other, for dextrorotation to; Two ring tracks are separately fixed on the end cap of the opposite external end face of spiral chute of two groups of rotation directions; Liquid-inlet is divided into the two ends of the pump housing, and liquid outlet is pump housing middle part between two groups of spiral cell bodies; The internal surface of spiral cell body and the outer surface of eccentric bushing are being slidingly connected of cooperating of camber line, eccentric shaft is connected with the end cover body of the pump housing by bearing, when eccentric shaft and eccentric bushing rotate, drive the spiral cell body and do planetary motion, thereby turn between the spiral chute on pump housing spiral chute and the spiral chute external surface being cooperated liquid boosted pumps.
The internal surface of the spiral cell body that described two groups of rotation directions are opposite is cylindrical, the outer surface of eccentric bushing is that the circular arc of projection or the internal surface of spiral cell body are the circular arc of projection, the outer surface of eccentric bushing is cylindrical, and the internal surface of spiral cell body and the outer surface of eccentric bushing are being slidingly connected of cooperating of camber line like this.
The spiral cell body internal surface that described two groups of rotation directions are opposite is fixedly connected with universal rotation set.
Described two groups of opposite eccentric bushings of eccentric direction respectively separately be to be threaded between the eccentric shaft, or key connects, or integrative-structure, eccentric bushing can be realized self-regulated, satisfies the track requirement that the spiral cell body is done planetary motion.
Described end cover body is to be made of the ring track that connects on the end cap interior edge face.
Double-rotor internal-rotation constant pressure pump structure of the present invention has caught rectangular coil line, groove to cooperate the rule of sliding, not only solve in the rectangle helical and the pump housing this difficult problem that becomes one structure, and fundamentally solved a sealing difficult problem that cooperates between rectangular coil line and rectangular coil groove.Eliminated the inertial force that axial force and eccentric motion are produced simultaneously.
Double-rotor internal-rotation constant pressure pump main feature of the present invention is:
1. this pump is owing to be spiral motion, and its formed Seal cage is heterogeneous type Seal cage, so the pressure pulsating movement free of output is stably all the time.
2. this pump is because inner vortex body and pump case are one, and these characteristics of its structure can satisfy the very-high-lift requirement, and delivery pressure can reach 30Mpa above (lift is more than 3000 meters).
3. this pump guarantees that the spiral seal line is in the optimum state all the time in the work owing to revolve body and have universally from conditioning function, thus in let out very little.Its structures shape it can be when carrying general liquid at pressure constant state by changing rotating speed unsteady flow amount, but and liquid, gas mix defeated.
4. this pump adds that Sealing adopts high temperature resistant, so can carry high temperature media because internal structure is metalwork.
5. this pump is because simple in structure, and no valve member, inner piece are and rotatablely move, so noise is low, energy consumption is low.
6. this pump does not have the inertial force that axial force and eccentric motion are produced, and high speed rotating is more steady.
7. this pump displacement has increased one times than singly revolving.
Description of drawings
The present invention will be further described below in conjunction with embodiment's accompanying drawing.
Fig. 1 is embodiment's 1 structural representation.
Among the figure: 1, the pump housing; 2, spiral cell body; 3, universal rotation set; 4, eccentric bushing; 5, eccentric shaft; 6, ring track; 7, bearing; 8, oil sealing; 9, saturating end cap; 10, vexed end cap.
Embodiment
Embodiment as shown in Figure 1, the bispin displacement pump is to be connected and composed by the pump housing 1, spiral cell body 2, universal rotation set 3, eccentric bushing 4, eccentric shaft 5, ring track 6, bearing 7, oil sealing 8, saturating end cap 9, vexed end cap 10, seal ring, except that seal ring, remaining part all is a rigid material.Fixed cover is connected to two eccentric bushings 4 that eccentric direction is opposite on the axial plane of eccentric shaft 5, between eccentric bushing 4 and the eccentric shaft 5 is to be threaded, or key connects, it also can be integrative-structure, because eccentric bushing 4 is easily damaged partss, divides body structure only need change eccentric bushing 4 accessories and get final product, 5 working lifes of prolongation eccentric shaft, and eccentric bushing 4 can realize self-regulated, satisfies the track requirement that spiral cell body 2 is done planetary motion.The pump housing 1 outer surface is a cylindrical shape, on the pump housing 1 internal surface spiral chute is arranged, the spiral fluted Normal section is a rectangle, at the pump housing 1 be with between the eccentric shaft 5 of eccentric bushing 4 and be with two groups of spiral cell bodies 2 that rotation direction is opposite, spiral cell body 2 is that internal surface is columniform hollow cavity, it is identical with the spiral chute shape of the pump housing 1 internal surface that the outer surface of spiral cell body 2 has, the spiral chute that size matches, the internal surface of spiral cell body 2 and the outer surface of eccentric bushing 4 are being slidingly connected of cooperating of camber line, the outer surface of the eccentric bushing 4 of spiral cell body 2 is that the circular arc of projection or the internal surface of spiral cell body 2 are the circular arc of projection, the outer surface of eccentric bushing 4 is cylindrical, and the internal surface of spiral cell body 2 and the outer surface of eccentric bushing 4 are being slidingly connected of cooperating of camber line like this.
Left-handed spiral chute on the pump housing 1 internal surface of left side is identical with the external spiral groove shape of left side spiral cell body 2, and size matches and is meshing with each other, for left-handed to; Spiral chute on the right side pump housing 1 internal surface is identical with the external spiral groove shape of right-hand screw cell body 2, and size matches and is meshing with each other, for dextrorotation to; The internal surface of spiral cell body 2 and the outer surface of eccentric bushing 4 are being slidingly connected of cooperating of camber line, and eccentric shaft 5 is connected by the end cover body of bearing with the pump housing 1.
Spiral cell body 2 internal surfaces are fixedly connected with universal rotation set 3, can not want universal rotation set 3 yet, but there is universal rotation set 3 can increase working life, universal rotation set 3 can be used as accessory and changes, and when the internal surface of spiral cell body 2 be the circular arc of projection, the circular arc that universal rotation set 3 is processed into projection is more easy to process than the circular arc that directly internal surface of spiral cell body 2 is processed into projection.Eccentric shaft 5 is connected with the end cover body of the pump housing 1 by bearing 7, oil sealing 8 successively, and end cover body is to constitute by be connected with ring track 6 on the end cap interior edge face, and two ring tracks 6 are separately fixed on the end cap of opposite spiral cell body 2 exterior edge faces of two groups of rotation directions; Liquid-inlet is divided into the two ends of the pump housing 1, and liquid outlet is the pump housing 1 middle part between two groups of spiral cell bodies 2; Ring track 6 is annulars, and its effect is to provide the axial motion track for spiral cell body 2.When eccentric shaft 5 and eccentric bushing 4 rotate, drive spiral cell body 2 and do planetary motion, thereby turn between the spiral chute on the pump housing 1 internal surface spiral chute and spiral cell body 2 outer surfaces is cooperated make two spiral chutes mesh formed heterogeneous Seal cage constantly from import one end to outlet one end motion, thereby liquid is boosted liquid from the outlet discharge from the import suction, it is constant that the hydraulic pressure value of output keeps, not pulsation.It is adapted to, and flow is big, the requirement of high speed operation.
During installation, two groups of opposite spiral cell bodies 2 that universal rotation set 3 is housed of rotation direction are contained in the pump housing 1, make the pump housing 1 spiral chute place the screw channel of spiral cell body 2; The eccentric shaft 5 that the opposite eccentric bushing 4 of two groups of eccentric directions is housed is contained in the universal rotation set 3; Two ring track 6 usefulness screws are solid respectively on saturating end cap 9 and vexed end cap 10, and bearing 7, oil sealing 8 are divided on end cap 9 and the vexed end cap 10.Vexed end cap 10 is contained in the outlet end bolt of the pump housing 1.Saturating end cap 9 is contained in the entrance point bolt of the pump housing 1.By the rotation of eccentric shaft 5, the liquid-inlet at the two ends of liquid from the pump housing 1 enters, and discharges from the middle part liquid outlet of the pump housing 1 between two groups of spiral cell bodies 2.
The double-rotor internal-rotation constant pressure pump working principle is: the pump housing 1 maintains static, and drives screw channel by the rotation of eccentric shaft 5 and revolves body 2 and do planetary motion along pump housing inner spiral groove and ring track 6.The formed heterogeneous Seal cage of two spiral chutes constantly moves from the Way out of each end to the centre of two imports, thereby the import of liquid from two ends sucked and discharge from outlet with the pressure of steady state value.
Need to prove that it is all identical with the prior art structure that the present invention does not make the detailed descriptionthe part to pump structure, be described in detail is identical with known pump as the mounting point of seal ring.All at needs sealing positions such as end caps.
Claims (5)
1. the design method of a double-rotor internal-rotation constant pressure pump, this pump comprises the pump housing (1), eccentric shaft (5), end cap, seal ring, oil sealing (8), bearing (7), it is characterized in that: the pump housing (1) internal surface has two groups of spiral chutes that rotation direction is opposite, the spiral fluted Normal section is a rectangle, be with two eccentric bushings (4) on the axial plane of eccentric shaft (5), eccentric direction is opposite; At the pump housing (1) be with between the eccentric shaft (5) of eccentric bushing (4) and be with two groups of spiral cell bodies (2) that rotation direction is opposite, left-handed spiral chute on the pump housing (1) internal surface of left side is identical with the external spiral groove shape of left side spiral cell body (2), size matches and is meshing with each other, for left-handed to; Spiral chute on the right side pump housing (1) internal surface is identical with the external spiral groove shape of right-hand screw cell body (2), and size matches and is meshing with each other, for dextrorotation to; Two ring tracks (6) are separately fixed on the end cap of opposite spiral cell body (2) exterior edge face of two groups of rotation directions; Liquid-inlet is divided into the two ends of the pump housing (1), and liquid outlet is the pump housing (1) middle part between two groups of spiral cell bodies (2); The internal surface of spiral cell body (2) and the outer surface of eccentric bushing (4) are being slidingly connected of cooperating of camber line, and eccentric shaft (5) is connected with the end cover body of the pump housing (1) by bearing (7); When eccentric shaft (5) and eccentric bushing (4) when rotating, drive spiral cell body (2) and do planetary motion, thereby turn between the spiral chute on the pump housing (1) spiral chute and spiral cell body (2) outer surface being cooperated liquid boosted pumps.
2. the design method of a kind of double-rotor internal-rotation constant pressure pump according to claim 1, it is characterized in that: the internal surface of the spiral cell body (2) that described two groups of rotation directions are opposite is cylindrical, the outer surface of eccentric bushing (4) is that the circular arc of projection or the internal surface of spiral cell body (2) are the circular arc of projection, the outer surface of eccentric bushing (4) is cylindrical, and the internal surface of spiral cell body (2) and the outer surface of eccentric bushing (4) are being slidingly connected of cooperating of camber line like this.
3. the design method of a kind of double-rotor internal-rotation constant pressure pump according to claim 1, it is characterized in that: spiral cell body (2) internal surface that described two groups of rotation directions are opposite is fixedly connected with universal rotation set (3).
4. the design method of a kind of double-rotor internal-rotation constant pressure pump according to claim 1, it is characterized in that: described two groups of opposite eccentric bushings of eccentric direction (4) respectively separately be to be threaded between the eccentric shaft (5), or key connects, or integrative-structure, eccentric bushing (4) can be realized self-regulated, satisfies the track requirement that spiral cell body (2) is done planetary motion.
5. the design method of a kind of double-rotor internal-rotation constant pressure pump according to claim 1, it is characterized in that: described end cover body is to be made of the ring track that connects on the end cap interior edge face (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810232246A CN101737322A (en) | 2008-11-13 | 2008-11-13 | Design method of double-rotor internal-rotation constant pressure pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810232246A CN101737322A (en) | 2008-11-13 | 2008-11-13 | Design method of double-rotor internal-rotation constant pressure pump |
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| CN101737322A true CN101737322A (en) | 2010-06-16 |
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| CN200810232246A Pending CN101737322A (en) | 2008-11-13 | 2008-11-13 | Design method of double-rotor internal-rotation constant pressure pump |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216443A (en) * | 2013-03-27 | 2013-07-24 | 蚌埠市正大压缩机有限公司 | Right-handed oil pump formed by improving left-handed shaft end oil pump of compressor |
| CN107923394A (en) * | 2015-08-14 | 2018-04-17 | Itt制造企业有限责任公司 | Determine the apparatus and method of the pump discharge in twin-screw positive-displacement pump |
| CN109973379A (en) * | 2019-03-22 | 2019-07-05 | 重庆大学 | A kind of three screw rod mixing delivery pumps |
| US10451471B2 (en) | 2012-04-12 | 2019-10-22 | Itt Manufacturing Enterprises Llc | Method of determining pump flow in twin screw positive displacement pumps |
-
2008
- 2008-11-13 CN CN200810232246A patent/CN101737322A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10451471B2 (en) | 2012-04-12 | 2019-10-22 | Itt Manufacturing Enterprises Llc | Method of determining pump flow in twin screw positive displacement pumps |
| CN103216443A (en) * | 2013-03-27 | 2013-07-24 | 蚌埠市正大压缩机有限公司 | Right-handed oil pump formed by improving left-handed shaft end oil pump of compressor |
| CN107923394A (en) * | 2015-08-14 | 2018-04-17 | Itt制造企业有限责任公司 | Determine the apparatus and method of the pump discharge in twin-screw positive-displacement pump |
| CN109973379A (en) * | 2019-03-22 | 2019-07-05 | 重庆大学 | A kind of three screw rod mixing delivery pumps |
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Open date: 20100616 |