CN101871450A - Small-flow high-lift radial piston pump - Google Patents

Small-flow high-lift radial piston pump Download PDF

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Publication number
CN101871450A
CN101871450A CN 201010202659 CN201010202659A CN101871450A CN 101871450 A CN101871450 A CN 101871450A CN 201010202659 CN201010202659 CN 201010202659 CN 201010202659 A CN201010202659 A CN 201010202659A CN 101871450 A CN101871450 A CN 101871450A
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China
Prior art keywords
rotor
radial
pump
cut water
lift
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CN 201010202659
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Chinese (zh)
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CN101871450B (en
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余文凌
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余文凌
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Publication of CN101871450A publication Critical patent/CN101871450A/en
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Publication of CN101871450B publication Critical patent/CN101871450B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention relates to a small-flow high-lift radial piston pump, which is mainly formed by a pump body, a pump cover, a piston, a rotor, an eccentric shaft and a motor. A rotor bushing is fixedly installed on the external circle of the rotor. A radial hole with smaller diameter which is coaxial with the radial through hole of the rotor is arranged on the rotor bushing. Narrow grooves which are communicated with the radial through hole are arranged on the two sides of the radial hole. A volute tongue bushing is installed in the pump body. A sealing compensation block is installed in the volute tongue of the volute tongue bushing. A discharge check valve is arranged in the sealing compensation block. The width of the volute tongue is larger than the width of a radial passage on the rotor bushing. By adopting the structure, the area and the length of the sealing surface of the clearance of the volute tongue are increased, the radial sealing clearance between the sealing compensation block and the rotor bushing is kept to be zero, the discharge pressure can be obviously improved and the goals of small flow and high lift are reached. Moreover, in combination with the advantages of an original rotor pump that the efficiency is high, the energy is saved, the self-absorption performance is superior, the runner is smooth and the pump can be used for delivering viscous liquid with fibrous or particle impurities and the like, and the application prospect of the small-flow high-lift radial piston pump is wide.

Description

Small-flow high-lift radial piston pump
Technical field
The present invention relates to a kind of displacement pump, particularly a kind of small-flow high-lift radial piston pump.
Background technique
Flow is less than 10M 3/ h, lift are subjected to extensive use greater than the small flow and high lift pump of 100M in space flight, chemical industry, pharmacy, metallurgy and light industry, and the type of pump has multistage centrifugal pump, high speed centrifugal pump, peripheral pump, reciprocating pump etc., and they respectively have pluses and minuses.
For centrifugal pump, the specific speed of this small flow and high lift pump belongs to the ultra-low specific speed pump all below 20, and efficient is very low, generally all below 30%, as the vertical stainless steel multistage centrifugal pump of QDLA type, when flow is 0.6M 3When/h lift is 100M, need 12 grades of impeller serials, when lift is 198M, need 24 grades of impeller serials, efficient has only 30%, and assembly process process is poor, the rigidity deficiency.
High speed centrifugal pump can be accomplished pump and motor direct connection, and volume is little, but its rotating speed is high, at 5000-16000rpm, what have reaches 20000rpm, needs to quicken by gear, and will adopt composite impeller and preposition inducer, complex structure, machining accuracy height, particularly high gear, high-speed bearing high speed machine seal request is all very high, process relative with maintenance cost higherly, and efficient is not high.
What the employing at present of low-flow high-lift water pump was more is peripheral pump, simple in structure because of it, easy to maintenance, volume is little, in light weight, price is low, vortex pump with open impeller also has self-priming performance, can carry out vapour, liquid mixes defeated, many departments in national economy are extensive use of, but no matter be closed peripheralpump, vortex pump with open impeller, centrifugal vortex pump, single suction peripheral pump or its disadvantage of multistage peripheral pump are that efficient is all extremely low, the highlyest be no more than 50%, most of peripheral pump efficient are at 20%-40%, what have has only tens percent, as patent ZL96203684.6 " axial entrance peripheral pump ", efficient has only 12-24%, be energy-consuming product, do not meet energy-conservation requirement, peripheral pump can not be used for pumping the bigger medium of viscosity in addition, also can only carry pure liquid, when containing particulate species impurity in the liquid, will cause axially and the increase in radially gap reduces pump performance because of wearing and tearing, or cause pump not work.
Small-sized piston pump or plunger pump such as metering pump, also can reach low-flow high-lift, possess efficient, self-priming, vapour-liquid mix defeated, can transporting viscous liquid etc. advantage, because valve arrangement is arranged, reciprocal time is very low, and generally all in 100 times/minute, the pulse of liquid stream is serious, following process is brought harmful effect, adds defectives such as vibration, noise.
The rotor pump of emerging valveless, caused people's attention, its self-priming performance is good, eliminated the retardation phenomenon of valve, simple in structure, volume is little, high and the energy transporting viscous liquid of reciprocal time, " rotor-type piston pump " as patent ZL021127763.8, ZL96228726.1 " double cylinder double acting rotopiston pump ", ZL00211851.3 " synchronous suction rotor pump " be, but it is can only small flow that all there is same general character defective in these rotor pumps, can not be high-lift, reason is the radial hole equal diameters of dress piston on cut water sealed width on the pump housing and the rotor, as shown in Figure 1, the pump housing 1 is arranged among the figure, rotor 2, piston 3, cut water 4, the isolation of this pump hyperbaric chamber and low-pressure cavity is to rely on the cut water 4 that on the pump housing inner chamber is divided into suction chamber and discharge side, it has played the seal action of valve, the length of its sealed width has determined the quality of performance of sealing and the height of head pressure, in operation process, when piston hole diameter during to last cut water 4 width, because both width equate, its seal length is instantaneous to be zero, produce the loss of liquid return and volumetric efficiency, therefore make the raising head pressure reach the high-lift severely restricts that are subjected to, limited it and in low-flow high-lift, used.
Summary of the invention
The objective of the invention is to: at the shortcoming of rotor pump and above-mentioned various pump and existence, propose that a kind of compact structure, liquid levelling are steady, good seal performance, small-flow high-lift radial piston pump that head pressure is high.
In order to achieve the above object, small-flow high-lift radial piston pump of the present invention, comprise the pump housing 1 that has suction port and exhaust port, this pump housing 1 inner chamber is equipped with the rotor 2 that has row's radial direction through hole vertically at least, be equipped with in the radial direction through hole of this rotor 2 by eccentric stiffener or camshaft mechanism and can produce pistons reciprocating 3, its special way is: the outer garden of described rotor 2 is fixed with rotor cover 6, this rotor cover 6 has radial hole coaxial and that diameter is less corresponding to rotor 2 radial direction through hole positions, these radial hole both sides have the narrow groove that is communicated with radial hole, form the radial passage; The described pump housing 1 garden cylindrical inner chamber is fixed with cut water cover 5, and the inner chamber of this cut water cover 5 is provided with a pair of wide and be symmetrical in the cut water 4 of center line, in this cut water 4 sealing compensation piece 8 is housed, and is provided with in the sealing compensation block 8 and discharges one-way valve 10; The width of the cut water 4 of described cut water cover 5 is greater than the width of radial passage on the rotor cover 6.
Be equipped with on the sealing compensation piece 8 described in the technical solution of the present invention sealing compensation piece 8 is pressed to the elasticity gland 9. that rotor overlaps 6 surfaces
Cut water 4 both sides of the cover of cut water described in the technical solution of the present invention 5 can be made into the passage of various difformities and size.
Discharge one-way valve 10 described in the technical solution of the present invention on the sealing compensation piece 8 can be ball check valve.
The outlet of discharging one-way valve 10 described in the technical solution of the present invention can communicate with the aperture 11 that cut water overlaps on 5.
The present invention focuses on the weak link that solves present rotor pump: promptly on the seal isolation of hyperbaric chamber and low-pressure cavity, behind the valve arrangement of rotor pump cancellation conventional reciprocating pump, the zone of high pressure of rotor pump and low pressure area are by the cut water seal isolation, present existing rotor pump all adopts the equal diameters of the radial direction through hole of the sealed width of cut water 4 and rotor, as shown in Figure 1, the pump housing 1 is wherein arranged, rotor 2, piston 3, cut water 4, the projection of graticule mesh presentation graphs 1 sealing surface among Fig. 2, as we know from the figure, when epitrochanterian radial direction through hole forwards the aligning cut water to, because two width equate, at this moment the sealing surface at maximum diameter place is instantaneous is zero, hyperbaric chamber and low-pressure cavity are instantaneous gangs up, liquid return, reduced volumetric efficiency, also having reduced head pressure. solution of the present invention is: when strengthening lengthening cut water sealing surface, it is zero that minimizing radial seal gap makes it, its measure is: add cut water cover 5 in the pump housing 1, rotor 2 outer gardens add rotor cover 6, as shown in Figure 3, the pump housing 1 is arranged among the figure, rotor 2, piston 3, cut water 4, cut water cover 5, rotor cover 6, eccentric shaft 7, sealing compensation piece 8, eccentric shaft 7, elasticity gland 9, discharge one-way valve 10, small channel 11 parts such as grade, this structure is made the both sides of cut water 4 on the cut water cover 5 and is changed from small to big, again passage from large to small; And the reduced of rotor being overlapped the coaxial radial hole at radial direction through hole position on 6 respective rotor 2, and be shaped on the narrow groove that is communicated with radial hole in the both sides of this radial hole, the width of cut water is arranged to overlap greater than rotor the width of 6 radial passages, the projection of the sealing surface after the improvement such as Fig. 4, the area and the length of its sealing all greatly increase, simultaneously, sealing compensation piece 8 is housed in cut water 4, utilize elasticity gland 9 that sealing compensation piece 8 is pressed to rotor and overlap 6 surfaces, making in this section, the gap of sealing surface is zero, consequently reduce backflow, improved head pressure.
The characteristics of small-flow high-lift radial piston pump of the present invention are piston " short stroke, high frequencies ", its reciprocal time is very high, but the flow of Shu Songing is little each time, therefore the radial hole diameter of rotor cover 6 can dwindle, and in addition, piston its unit time discharge amount in each suction cycle is also also unequal, piston is the discharge amount maximum when 90 degree positions, piston is when two limit positions, and the discharge capacity minimum is so the radial passage of the cover of the rotor when the piston limit position 6 can narrow down to into narrow groove.
In sealing compensation piece 8, be provided with among the present invention and discharge one-way valve 10, be when in the confined area of cut water 4, moving and produce vexed car phenomenon for fear of piston 3, enter the confined area of cut water width when piston 3 after, when piston moves on discharge opeing, liquid is eliminated the vexed car phenomenon of pump through discharging one-way valve and small channel 11 to the discharge side discharge opeing.
This motion principle that utilizes connecting rod, realize the rotor pump of the suction function of pump, hydraulic loss and volumetric loss are all little, efficient is very high, piston 3 is double-action work, each passes on twice of liquid, running up down, the steady no pulse of liquid stream output is owing to cancelled valve arrangement, therefore vibrate little, noise is low, after adopting structure of the present invention, its good effect is: because sealing area and length strengthen, the radial clearance between sealing compensation piece 8 and the rotor cover 6 is zero, can obviously improve head pressure, reach low-flow high-lift; Add rotor pump original energy-efficient, self-priming performance is superior, runner is unobstructed, can carry viscosity and the advantages such as liquid of fibrous or particulate contamination are arranged, and will obtain to use widely prospect.
Description of drawings
Fig. 1 is the structural drawing of existing rotor-type piston pump cut water sealing.
Fig. 2 is the projection drawing of sealing surface among Fig. 1.
Fig. 3 is the structural drawing that the present invention improves sealability.
Fig. 4 is the projection drawing of the sealing surface of Fig. 3.
Fig. 5 is embodiments of the invention.
Fig. 6 is the B-B sectional view of Fig. 5.
Embodiment
Fig. 5 is embodiments of the invention-have the radial piston pump of dual-supporting eccentric shaft 7 and double-piston 3, and Fig. 6 is the B-B sectional view of Fig. 5.
Show the pump housing 1, rotor 2, piston 3, cut water 4, cut water cover 5, rotor cover 6, eccentric shaft 7, sealing compensation piece 8, elasticity gland 9 among the figure, discharge one-way valve 10, small channel 11, pump cover 12, bearing 13, gland seal device 14, motor 15, rolling ring 16, eccentric wheel 17.
Adopt the eccentric shaft 7 of a rotatable dual-supporting in this example, one end bearing of this eccentric shaft 7 is on pump cover 12 in the eccentric opening, the other end passes piston 3 waist elongated slots and is bearing in the eccentric opening of eccentric wheel 17, these eccentric wheel 17 removable mountings are also coaxial with it at the inner chamber of rotor 2, and eccentric shaft 7 is equipped with rolling ring 16. with piston 3 waist elongated slot hinged places
When motor 15 drives rotor 2 rotations, piston 3 does relatively reciprocating motion around the radial direction through hole that eccentric shaft 7 rotates on the edge rotor 2 on one side, the to-and-fro motion of piston 3 produces volume-variation, suck liquid again from the discharge side drain from suction chamber, wherein cure process need be made in the surface of friction pair such as eccentric shaft 7, rolling ring 16, piston 3, sealing compensation piece 8.
This example has increased sealing area and length, and has utilized sealing compensation piece 8 to reduce the radial clearance of sealing surface by the ingenious combination of cut water cover 5 and rotor cover 6, and to make it be zero, can obviously improve head pressure, reaches low-flow high-lift; Add dual-piston structure, piston is mutually 90 degree, each piston double-action work, revolution transfusion four times, run up down at motor, the steady no pulse of liquid stream output, vibrate little, noise is low, the displacement pump principle of this volume-variation, hydraulic loss and volumetric loss are all little, and efficient is very high.

Claims (5)

1. small-flow high-lift radial piston pump, comprise the pump housing (1) that has suction port and exhaust port, this pump housing (1) inner chamber is equipped with the rotor (2) that has row's radial direction through hole vertically at least, be equipped with in the radial direction through hole of this rotor (2) by eccentric stiffener or camshaft mechanism and can produce pistons reciprocating (3), it is characterized in that: the outer garden of described rotor (2) is fixed with a rotor cover (6), this rotor cover (6) has radial hole coaxial and that diameter is less corresponding to rotor (2) radial direction through hole position, these radial hole both sides have the narrow groove that is communicated with radial hole, form the radial passage; The described pump housing (1) garden cylindrical inner chamber is fixed with a cut water cover (5), the inner chamber of this cut water cover (5) is provided with a pair of wide and be symmetrical in the cut water (4) of center line, sealing compensation piece (8) is housed in this cut water (4), is provided with in the sealing compensation block (8) and discharges one-way valve (10); The width of the cut water (4) of described cut water cover (5) is gone up the width of radial passage greater than rotor cover (6).
2. small-flow high-lift radial piston pump according to claim 1 is characterized in that: the elasticity gland (9) of sealing compensation piece (8) being pressed to rotor cover (6) surface is housed on the described sealing compensation piece (8).
3. small-flow high-lift radial piston pump according to claim 1 is characterized in that: cut water (4) both sides of described cut water cover (5) can be made into the passage of various difformities and size.
4. small-flow high-lift radial piston pump according to claim 1 is characterized in that: the discharge one-way valve (10) on the described sealing compensation piece (8) is a ball check valve.
5. small-flow high-lift radial piston pump according to claim 1 is characterized in that: the outlet of described discharge one-way valve (10) communicates with aperture (11) on the cut water cover (5).
CN2010102026597A 2010-06-08 2010-06-08 Small-flow high-lift radial piston pump Expired - Fee Related CN101871450B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010102026597A CN101871450B (en) 2010-06-08 2010-06-08 Small-flow high-lift radial piston pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010102026597A CN101871450B (en) 2010-06-08 2010-06-08 Small-flow high-lift radial piston pump

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CN101871450A true CN101871450A (en) 2010-10-27
CN101871450B CN101871450B (en) 2012-08-22

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103883496A (en) * 2014-03-27 2014-06-25 余文凌 Rotor type multistage pump
CN103939336A (en) * 2014-05-18 2014-07-23 余文凌 Portable fire pump
CN105863738A (en) * 2015-04-30 2016-08-17 熵零股份有限公司 Radial compensating mechanism and device applying same
CN105909313A (en) * 2015-04-30 2016-08-31 熵零股份有限公司 Sliding type radial compensation mechanism and device applying same
CN107461320A (en) * 2017-08-29 2017-12-12 海斯比得(武汉)石油科技有限公司 Positive displacement pump and extracting device of oil

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50111605A (en) * 1972-08-12 1975-09-02
GB1446852A (en) * 1972-08-12 1976-08-18 Anidyne Corp Rotary machines
CN1379180A (en) * 2002-03-15 2002-11-13 陈根生 Rotor-type piston pump
CN2541625Y (en) * 2002-01-28 2003-03-26 余文凌 Multi-cylinder dual-function rotor type radial reciprocating pump
CN2716539Y (en) * 2003-06-26 2005-08-10 邱佰昌 Liquid injection internal cooling rotor piston compressor
CN101718273A (en) * 2009-11-12 2010-06-02 陕西关中压缩机制造有限公司 Liquid pump of rotary cylinder piston

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50111605A (en) * 1972-08-12 1975-09-02
GB1446852A (en) * 1972-08-12 1976-08-18 Anidyne Corp Rotary machines
CN2541625Y (en) * 2002-01-28 2003-03-26 余文凌 Multi-cylinder dual-function rotor type radial reciprocating pump
CN1379180A (en) * 2002-03-15 2002-11-13 陈根生 Rotor-type piston pump
CN2716539Y (en) * 2003-06-26 2005-08-10 邱佰昌 Liquid injection internal cooling rotor piston compressor
CN101718273A (en) * 2009-11-12 2010-06-02 陕西关中压缩机制造有限公司 Liquid pump of rotary cylinder piston

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103883496A (en) * 2014-03-27 2014-06-25 余文凌 Rotor type multistage pump
CN103939336A (en) * 2014-05-18 2014-07-23 余文凌 Portable fire pump
CN105863738A (en) * 2015-04-30 2016-08-17 熵零股份有限公司 Radial compensating mechanism and device applying same
CN105909313A (en) * 2015-04-30 2016-08-31 熵零股份有限公司 Sliding type radial compensation mechanism and device applying same
CN107461320A (en) * 2017-08-29 2017-12-12 海斯比得(武汉)石油科技有限公司 Positive displacement pump and extracting device of oil

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