CN203023046U - Axisymmetric cambered rotary variable displacement pump - Google Patents
Axisymmetric cambered rotary variable displacement pump Download PDFInfo
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- CN203023046U CN203023046U CN 201220650412 CN201220650412U CN203023046U CN 203023046 U CN203023046 U CN 203023046U CN 201220650412 CN201220650412 CN 201220650412 CN 201220650412 U CN201220650412 U CN 201220650412U CN 203023046 U CN203023046 U CN 203023046U
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Abstract
The utility model provides an axisymmetric cambered rotary variable displacement pump. Compared with the prior art, the variable displacement pump has the beneficial effects that protruding contact points in the middle of the end faces of slide dampers are moved to the sides, closer to high pressure areas, of the end faces of the slide dampers, thus eliminating or reducing the stressed planes on the high pressure area sides of the end faces of the slide dampers, farthest reducing the back pressures of high pressure fluid on the end faces of the slide dampers, ensuring that the slide dampers can not be pressed back by the high pressure fluid and cause axial compression and intermittent separation, overcoming the defect that the end faces of the slide dampers in the prior art have stressed planes, thus causing momentary separation between the dampers and cambered surfaces of turntables, especially the critical defect of short actual service lives and being capable of ensuring that the efficiency of the rotary variable displacement pump is not reduced in the case of long-time running.
Description
Technical field
Model utility is the improvement to axisymmetric curved surface rotary volume-variable pump, relate in particular to a kind ofly can guarantee that the rotary volume-variable pump efficiency is high, noise is low, vibrations are little, the axisymmetric curved surface rotary volume-variable pump of slide damper and curved surface rotating disk long service life.
Background technique
Axisymmetric curved surface rotary volume-variable pump is a kind of newtype rotating displacement pump, its working efficiency is very high, and pumping efficiency exceeds 30～40% left and right up to 70 ~ 80% than Ordinary Centrifugal Pumps efficient, especially use in small flow, high pressure operating mode, efficient can exceed 40% left and right than centrifugal pump.Flow 20 ~ 30m for example
3/ h, the centrifugal pump of lift 0.8MPa, general efficient only has 35 ~ 40%, and carries the axisymmetric curved surface rotary volume-variable pump of same flow and lift, and its efficient is up to 75% left and right.In addition, also because being that volume gradual change compression realizes pumping, in pump, liquid linear velocity is lower, and is less to the wearing and tearing of pump erosion for this pump, thus at transfer of highly viscous liquid, contain the solid-phase material slurry and have original advantage.For example use at the various lots of petroleum crude oil of China and carry, existing Crude Oil Transportation multistage centrifugal pump power can be saved more than 35%, is a kind of comparatively ideal Crude Oil Transportation pump.And this pump can just/counterrotating work.
Chinese patent 200620116360.9 discloses a kind of curved surface rotary volume-variable pump, basic structure such as Fig. 1, 2, the assembling type pump cover 2.1 and 2.2 that comprises the cylindrical circular pump case 3 of inner chamber and two supports rotating shaft, the pump chamber axially fixedly separator disc 5 at middle part is divided into two chambeies, left and right with pump, the rotating shaft 1 of passing separator disc with the pump chamber dead in line, the opposed liquid entering hole 7 in pump case separator disc position and liquid outlet 6, be communicated with the drain groove 5.1 and 5.2 of both sides on the thickness face of separator disc liquid in-out mouth position, separator disc both sides and pump chamber side face are rotatably assorted, curved surface relatively and 180 degree that are staggered, be fixed on the axisymmetric curved surface rotating disk 4 in rotating shaft, axial slide is arranged in the middle of separator disc liquid in-out mouth, but the baffle plate assembly 8 that the interpolation axial reciprocating slides.Wherein baffle plate assembly is comprised of left baffle 8.1 and 8.2, middle guide pad 8.3 and spring 8.4, makes left baffle be the elasticity Collapsible structure.Working principle: separator disc two N-Side surfs in opposite directions, the axisymmetric curved surface rotating disk synchronous rotaries of curved surface dislocation 180 degree, produce respectively volume reducing (discharge) and volume in slide damper both sides and increase (suction), the left and right has 2 and discharges active chamber, 2 suck active chamber, externally discharge and suck fluid by drain groove on separator disc, thus realize pump row, inhale continuously and carry.Slide damper to-and-fro motion in the separator disc axial slide is by the curved surface rotating disk curved surface promotion of opposed 180 degree that are staggered of synchronous rotary.yet this structure has just proposed a kind of imagination of axisymmetric curved surface rotary volume-variable pump, consider owing to lacking engineering operation, make the displacement pump that designs and produces by this, lack actual application value in engineering, particularly working life is short, usually effectively work is no more than 20 days, thereby cause the actual model utility of this displacement pump for many years, just rest on theory stage, so far do not have and reach the pump that satisfies Practical Project operation needs and put goods on the market, so market is this pump physical presence not, report is not arranged on the pump project handbook yet, the Crude Oil in China transfer pump still adopts the lower multistage centrifugal pump of efficient so far.
For example: contact the slide damper end of separating the height nip with the axisymmetric curved surface rotating disk, long-time and curved surface rotating disk curved surface sliding friction, contact abrasion for alleviating with the curved surface rotating disk, employing is offered circular hole in the end, place circular roller or roller (following general designation roller), in the middle part of making the slide damper end face, the roller cylindrical contacts with the line that the curved surface rotating disk is the surface of contact minimum, reduce slide damper end face and curved surface rotating disk surface friction drag and reduce wearing and tearing with this, extend slide damper and/or curved surface rotating disk working life.Yet because being only considers from alleviating sliding friction, be arranged on roller 10 diameters of slide damper end face much smaller than Weir Plate Thickness (end face exposes seldom circular arc), make slide damper end rollers both sides existence larger plane of constraint 11 (Fig. 3).and this pump slide damper both sides high-low pressure is poor larger, usually up to more than 1MPa, the high-pressure liquid that compression forms can produce axial pushing tow compression to this plane, especially when moving to the high point of curved surface section A (Fig. 4), the plane that the end rollers both sides are larger, also can cause wide roller low pressure area side of baffle plate end and curved surface contact (Fig. 3), cause the baffle plate end rollers to separate with curved surface rotating disk moment, slide damper end face and curved surface turntable clearance are increased, end face and highly pressurised liquid area of contact have been strengthened, and then increased the back-pressure thrust of pressure fluid to slide damper, causing slide damper end and curved surface rotating disk to produce intermittence separates.Separate with the curved surface turntable intermittent slide damper end: the one, and cause high-pressure liquid to leak to the channelling of baffle plate opposite side low pressure suction area, reduce the actual output quantity of pump (reducing pump work efficient), and efficient increases with outlet pressure and reduces, the theoretical efficiency value significantly descends, and the highlyest lowers efficiency 15 ~ 20%; And along with extend working time, slide damper medi-spring 8.4 is because repeatedly significantly being compressed, produce the fatigability flexibility decrease, baffle plate end face and curved surface rotating disk interface pressure are reduced, and then further channelling is leaked in increase, cause at actual motion after 10 ~ 20 days, pump duty and outlet pressure significantly descend, two indexs generally will descend 15 ~ 20% simultaneously, carry in the above high pressure of 1MPa, efficient only has 65 ~ 70%, especially when conveying contains solid-phase material crude oil, generally is difficult to working life over 10 days.The 2nd, the intermittent separation of slide damper high frequency (800 rev/mins of left and right of rotating speed), making slide damper and curved surface turntable surface produce high frequency clashes into, not only very easily cause the wearing and tearing of baffle plate end face roller impact, shortened baffle plate working life, the engineering operation baffle plate only has 10 ~ 15 days actual life, also can cause simultaneously the curved surface disc surfaces to produce local damage, surperficial crudeization because impacting, slide damper and curved surface friction resistance increase, and cause the pump power consumption to increase; And the high-frequency pulse formula is clashed into, (during operation, outlet does not have noise, vibration without pressure for noise when also having increased pump operation and vibrations, as long as pump discharge one has pressure, noise, vibration are just amplified, and pressure is higher, noise, vibrations are larger), vibrations cause bearing and shaft sealing obviously to shorten working life.Although can deal with the high-pressure liquid back pressure by increasing the slide damper inner spring intensity of pressure in theory, but causing having increased between baffle plate and curved surface rotating disk, increase spring pressure intensity results weares and teares, cause equally baffle plate and the shortening in working life of curved surface rotating disk, the spring pressure strength increase also causes the pump power consumption to increase simultaneously, increases operation energy consumption.In addition, slide damper high-frequency pulse formula like this is clashed into, also limited the selection of roller material, usually can only adopt metal to make roller, and the common metal roller, its wear resistance is relatively poor, and this is also to cause a short major reason of actual life, and Metal Contact Rollers has also limited it and can not be used for using with granule medium.Although all good nonmetallic material of some Economy, wear resistance and processability are arranged in engineering, such as silicon carbide, aluminium oxide ceramics, zirconium oxide, sytull etc., due to the large weakness of himself intrinsic fragility, high-frequency pulse formula shock is easy to cause cracked, thereby can't be used for the baffle plate end rollers.Use the serious rated flow of short-term (10 ~ 15 days) internal leakage to reduce, decrease in efficiency, pump power increases, noise, vibrations are large, and baffle plate and curved surface rotating disk large shortcoming in working lifes short five are difficult to overcome, become the impassable obstacle of pump input engineering operation for this reason, fail for a long time to solve.
In addition, existing axisymmetric curved surface rotary volume-variable pump, the pump liquid entering hole is identical with the design of fluid oral pore sectional area, and is high due to the liquid outlet hydrodynamic pressure, flow velocity is fast, for example when discharge pressure is 0.8MPa, 10 ~ 15 meters of stream scooter per seconds; And the liquid sucting port negative suction is lower, and under aforementioned delivery pressure, negative suction is only-0.02MPa that flow velocity can only reach 4 ~ 6 meters.So at one time, flow by the liquid in-out mouth produces very large difference, cause suction port feed liquor flow to be significantly less than the liquid outlet output flow, the consequence that produces will reduce pump real work efficient equally, and can be little because of the liquid sucting port latus rectum, cause fluid to run out of, and then produce cavitation erosion and cavitation erosion property noise.
Above-mentioned deficiency still has is worth improved place.
Summary of the invention
The model utility purpose is to overcome above-mentioned the deficiencies in the prior art, provides a kind of and can guarantee that the rotary volume-variable pump efficiency is high, noise is low, vibrations are little, the axisymmetric curved surface rotary volume-variable pump of slide damper and curved surface rotating disk long service life.
The utility model is for solving the problems of the technologies described above, provide following technological scheme: model utility axisymmetric curved surface rotary volume-variable pump, comprise the cylindrical circular pump case of inner chamber, the axial middle part of pump chamber is separated pump chamber and is fixed in the separator disc of the pump housing, the opposed liquid entering hole in pump case side face separator disc position and liquid outlet, the separator disc both sides are rotatably assorted with the pump chamber side face, curved surface is relative and 180 degree that are staggered, be fixed on the axisymmetric curved surface rotating disk in rotating shaft, axial slide in the middle of separator disc liquid in-out mouth, interpolation is the slide damper assembly in axial sliding.The slide damper assembly is comprised of the baffle plate that horizontally slips, middle guide block and spring, makes slide damper comply with middle guide block and is the elasticity Collapsible structure.It is characterized in that the slide damper end face is provided with and the contacted raised line of curved surface rotating disk, described raised line is positioned at slide damper end face zone of high pressure one side, 1/3 of raised line thickness≤Weir Plate Thickness, and described raised line and slide damper end face can be formed in one.
By the roller height is put to the gradient that forms between the slide damper low spot, greater than the maximum slope on curved surface rotating disk inclined-plane, eliminate like this or reduce Weir Plate Thickness end face plane of constraint.Concrete improvement is protrusion roller or the raised line that will contact with the rotating disk curved surface in the middle part of the slide damper end face, change into raised line is arranged on slide damper end face zone of high pressure one side, 1/3 of raised line thickness≤Weir Plate Thickness, make slide damper end face and rotating disk curved surface point of contact in the zone of high pressure one side, reduce or eliminate slide damper end face zone of high pressure side plane of constraint with this, thereby overcome the deficiencies in the prior art, realize the utility model purpose.
For guaranteeing that slide damper is in any position of curved surface rotating disk curved surface; baffle plate end face low pressure area avris not with the curved surface contact; avoid the hyperbaric chamber fluid to enter the slide damper end face; slide damper is produced axial compression, and a kind of is better to make the gradient of the high point of slide damper biasing raised line and baffle plate low pressure area side greater than the maximum inclined-plane of curved surface rotating disk.The raised line of described slide damper end face is positioned at slide damper end face zone of high pressure avris.Slide damper end face raised line width and pump size, working pressure are proportionate.
Further improve as the utility model, raised line top with the slide damper end face low voltage side discrepancy in elevation greater than the maximum inclined-plane of curved surface rotating disk curved surface, like this during the curved surface turntable rotation, slide damper end face low pressure area side not can with the curved surface contact, cause and back down slide damper.
For improving slide damper end raised line wear resistance, increase the service life, adopt when a kind of more preferably baffle plate end face raised line is positioned at slide damper end face zone of high pressure avris and inlay wear-resisting abaculus structure, alleviate slide damper and/or the wearing and tearing of curved surface rotating disk with this, further increase the service life, and adapt to the conveying that contains the granule medium slip.Inlaid material can be: the wear-resistant plastics such as modified ultra-high molecular polyethylene, modified Teflon, and the wear-resistant ceramics such as silicon carbide, aluminium oxide, zirconium oxide, a kind of in sytull.
The raised line of slide damper end face and curved surface rotating disk material interworking, a kind of is better to join firmly or firmly join the soft-principle interworking by soft, namely by material nonhomogeneous hardness interworking.For example the curved surface rotating disk is the metal rigid material, and the inlaid material of baffle plate end can be selected the flexible materials such as wear-resistant plastic, graphite, or higher cemented carbide, the silicon carbide of hardness; If the curved surface rotating disk adopts the flexible materials such as engineering plastics, rubber, the inlaid material of baffle plate end can be selected the hard materials such as pottery, metal, sytull.The soft or hard interworking, can wear and tear by the decrease attrition surface like this, the working life that is conducive to improve slide damper and curved surface rotating disk, thereby the working life of effective elevator pump.
In addition, for reducing or eliminating the reduction that liquid in-out mouth flow difference causes pump efficiency, a kind of is better to make feed liquor oral pore sectional area greater than fluid oral pore sectional area (the higher liquid entering hole of delivery pressure cross section is larger), with balance liquid entering hole and liquid outlet actual flow, guarantee the theoretical efficiency (or making decrease in efficiency to minimum) of pump.
the beneficial effects of the utility model: the utility model axisymmetric curved surface rotary volume-variable pump, with respect to prior art, owing to moving to higher nip one side of slide damper end face by point of contact is protruded at slide damper end face middle part, thereby eliminate or reduced slide damper end face zone of high pressure side plane of constraint, reduced to greatest extent high-pressure liquid to slide damper end face back pressure, guarantee that slide damper can not produced axial compression by the high-pressure liquid back-pressure, and the generation intermittence is separated, overcome prior art slide damper end face and had plane of constraint, cause baffle plate and rotating disk curved surface moment to separate the shortcoming of bringing, particularly actual life short critical defect, can guarantee that the long-time running of rotary volume-variable pump efficiency does not reduce, the liquid entering hole cross section is greater than the liquid outlet Cross section Design, also can further reduce the decline of pump real work efficient, the operation power consumption does not increase, eliminate intermittence and clashed into noise and the vibrations that produce, also extended the working life of slide damper, curved surface rotating disk and pump, thereby made the rotary volume-variable pump have the Practical Project operation value.Secondly, clash into owing to having eliminated slide damper high-frequency pulse formula, make baffle plate zone of high pressure one side contacts raised line, can inlay some Economy, processability and wear resistance all gets well and the large material (wear-resistant ceramics such as silicon carbide, aluminium oxide, zirconium oxide of fragility, the wear-resistant plastics such as modified ultra-high molecular polyethylene, modified Teflon, impregnated graphite, sytull), so more can increase substantially slide damper end and curved surface rotating disk working life, and enlarged pump Applicable scope, for example can be used for containing the conveying of granule medium.
Description of drawings
Fig. 1 is prior art axisymmetric curved surface rotary volume-variable pump structure schematic diagram.
Fig. 2 is that Figure 1A-A cuts open structural representation.
Fig. 3 is slide damper end and the curved surface rotating disk stressed schematic diagram that contacts when height point in Fig. 1.
Fig. 4 is the open and flat schematic diagram of Fig. 1 axisymmetric curved surface rotating disk.
Fig. 5 is that a kind of raised line of model utility slide damper end face contacts schematic diagram with the rotating disk curved surface.
Fig. 6 is that the another kind of raised line of model utility slide damper end face contacts schematic diagram with the rotating disk curved surface.
Fig. 7 arranges roller on another raised line of slide damper end face of model utility to contact schematic diagram with the rotating disk curved surface.
Fig. 8 is a kind of wear-resisting cord tissue schematic diagram of inlaying.
Fig. 9 is that another kind is inlayed wear-resisting cord tissue schematic diagram.
Figure 10 inlays wear-resisting cord tissue schematic diagram for another.
Figure 11 inlays wear-resisting cord tissue schematic diagram for also a kind of.
Embodiment
Below in conjunction with some specific embodiments; model utility essence is further understood in exemplary illustration and help; but embodiment's detail is only for model utility is described; do not represent the lower whole technological schemes of model utility design; therefore should not be construed as the total technological scheme of model utility is limited; some are In the view of the technician; the unsubstantiality that does not depart from the model utility design increases and/or changes; for example change or replace so that technical characteristics with same or similar technique effect is simple, all truely using novel protected scope.
Axisymmetric curved surface rotary volume-variable pump, comprise the cylindrical circular pump case 3 of inner chamber, the axial middle part of pump chamber is separated pump chamber and is fixed in the separator disc 5 of the pump housing, the pump case 3 opposed liquid entering hole 7 in side face separator disc position and liquid outlets 6, separator disc 5 both sides are rotatably assorted with the pump chamber side face, curved surface is relative and 180 degree that are staggered, be fixed on the axisymmetric curved surface rotating disk 4 in rotating shaft, axial slide in the middle of separator disc 5 liquid in-out mouths (7,6), interpolation is slide damper assembly 8 in axial sliding.Slide damper assembly 8 is comprised of the baffle plate 8.1 and 8.2 that horizontally slips, middle guide block 8.3 and spring 8.4, makes slide damper (8.1,8.2) be the elasticity Collapsible structure according to middle guide block.Slide damper (8.1,8.2) end face is provided with and the contacted raised line 12 of curved surface rotating disk 4, and described raised line 12 is positioned at slide damper end face zone of high pressure one side, 1/3 of raised line thickness≤Weir Plate Thickness.described raised line 12 and slide damper (8.1, 8.2) end face is one-body molded, described slide damper (8.1, 8.2) raised line 12 of end face is positioned at slide damper (8.1, 8.2) end face zone of high pressure avris, preferred described slide damper (8.1, 8.2) raised line 12 of end face is for inlaying high-abrasive material, can be provided with roller 10 on described raised line 12, described raised line 12 width and pump size, working pressure is proportionate, described raised line 12 tops and slide damper (8.1, 8.2) the end face downside discrepancy in elevation is greater than curved surface rotating disk 4 curved surfaces maximum inclined-planes, liquid entering hole 7 hole sectional areas are preferably designed for greater than liquid outlet 6 hole sectional areas, slide damper (8.1, 8.2) end face raised line 12 and curved surface rotating disk material preferably join firmly or firmly join the soft-principle interworking by soft.
Be more than basic embodiment of the present utility model, below introduce in detail specific embodiment of the utility model:
embodiment 1: referring to Fig. 1, 2, 5, model utility axisymmetric curved surface rotary volume-variable pump, the assembling type pump cover 2.1 and 2.2 that comprises the cylindrical circular pump case 3 of inner chamber and two supports rotating shaft, rotating shaft 1 with the pump chamber dead in line, pump chamber is the fixing separator disc 5 of separating the chamber, left and right in middle part axially, the opposed liquid entering hole 7 in pump case separator disc position and liquid outlet 6, separator disc 5 liquid in-out mouths (7, 6) the drain groove 5.1 and 5.2 of opposed connection both sides on position thickness face, separator disc 5 both sides and pump chamber inner peripheral surface are rotatably assorted, curved surface relatively and 180 degree that are staggered, be fixed on the axisymmetric curved surface rotating disk 4 in rotating shaft 1, separator disc 5 liquid in-out mouths (7, 6) neutral position has axial slide, interpolation is slide damper assembly 8 in axial sliding.Wherein slide damper assembly 8 is comprised of the baffle plate 8.1 and 8.2 that horizontally slips, middle guide block 8.3 and spring 8.4, makes slide damper (8.1,8.2) be the elasticity Collapsible structure according to middle guide block; There is the perforation notch 9 that slide damper is installed pump case slide damper position, and from then on slide damper assembly 8 inserts in the separator disc axial slide in notch.Two slide dampers 8.1 in left and right and 8.2 zone of high pressure, exterior edge face avris have triangle inclined-plane raised line 12, raised line 12 tops and slide damper (8.1,8.2) the end face low voltage side discrepancy in elevation are greater than the maximum inclined-plane of curved surface rotating disk curved surface, when curved surface rotating disk 4 rotates like this, slide damper (8.1,8.2) end face low pressure area side not can with the curved surface contact, cause and back down slide damper (8.1,8.2).And raised line 12 width and pump size, working pressure are proportionate.
Embodiment 2: referring to Fig. 6, as embodiment 1, wherein slide damper (8.1,8.2) end face raised line is ledge structure 13.
Embodiment 3: referring to Fig. 7, as embodiment 1, wherein be provided with roller 10 on slide damper (8.1,8.2) end face raised line.
Embodiment 4: referring to figure: 8 ~ 11, as aforementioned, slide damper (8.1,8.2) end face raised line 12 is for inlaying high-abrasive material 14, inlaying high-abrasive material 14 can be the wear-resistant ceramics such as silicon carbide, aluminium oxide, zirconium oxide, the wear-resistant plastics such as modified ultra-high molecular polyethylene, modified Teflon, impregnated graphite, sytull etc.; Inlaying head can be that circular arc, triangle, ledge structure etc. are multiple.
Embodiment 5: as aforementioned, liquid entering hole 7 hole sectional areas are designed to greater than liquid outlet 6 hole sectional areas, preferred liquid entering hole 7 hole sectional areas are greater than liquid outlet 6 hole sectional areas 10% or 50%.
to those skilled in the art, under this patent design and specific embodiment enlightenment, some distortion that can directly derive or associate from this patent disclosure and general knowledge, those of ordinary skills will recognize also can adopt additive method, or the substituting of known technology commonly used in prior art, and the equivalence of feature changes or modifies, mutual various combination between feature, the for example change of slide damper end face raised line shape, etc. unsubstantiality change, can be employed equally, can realize this patent representation function and effect, launch for example no longer one by one to describe in detail, all belong to this patent protection domain.
Claims (9)
1. axisymmetric curved surface rotary volume-variable pump, comprise the cylindrical circular pump case of inner chamber, the axial middle part of pump chamber is separated pump chamber and is fixed in the separator disc of the pump housing, the opposed liquid entering hole in pump case side face separator disc position and liquid outlet, separator disc both sides and pump chamber side face are rotatably assorted, curved surface relatively and 180 degree that are staggered, be fixed on the axisymmetric curved surface rotating disk in rotating shaft, axial slide in the middle of separator disc liquid in-out mouth, interpolation is the slide damper assembly in axial sliding, the slide damper assembly is by the baffle plate that horizontally slips, middle guide block and spring form, make slide damper comply with middle guide block and be the elasticity Collapsible structure, it is characterized in that the slide damper end face is provided with and the contacted raised line of curved surface rotating disk, described raised line is positioned at slide damper end face zone of high pressure one side, 1/3 of raised line thickness≤Weir Plate Thickness.
2. axisymmetric curved surface rotary volume-variable pump according to claim 1, is characterized in that described raised line and slide damper end face are one-body molded.
3. axisymmetric curved surface rotary volume-variable pump according to claim 2, the raised line that it is characterized in that described slide damper end face are positioned at slide damper end face zone of high pressure avris.
4. axisymmetric curved surface rotary volume-variable pump according to claim 1, is characterized in that the raised line of described slide damper end face is for inlaying high-abrasive material.
5. one of according to claim 1 ~ 2 described axisymmetric curved surface rotary volume-variable pumps, is characterized in that being provided with roller on described raised line.
6. one of according to claim 1 ~ 3 described axisymmetric curved surface rotary volume-variable pumps, is characterized in that raised line width and pump size, working pressure are proportionate.
7. one of according to claim 1 ~ 4 described axisymmetric curved surface rotary volume-variable pumps, it is characterized in that the raised line top with the slide damper end face downside discrepancy in elevation greater than the maximum inclined-plane of curved surface rotating disk curved surface.
8. one of according to claim 1 ~ 4 described axisymmetric curved surface rotary volume-variable pumps, is characterized in that feed liquor oral pore sectional area is designed to greater than fluid oral pore sectional area.
9. axisymmetric curved surface rotary volume-variable pump according to claim 1 is characterized in that slide damper end face raised line and curved surface rotating disk material join firmly or firmly join the soft-principle interworking by soft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220650412 CN203023046U (en) | 2012-12-03 | 2012-12-03 | Axisymmetric cambered rotary variable displacement pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220650412 CN203023046U (en) | 2012-12-03 | 2012-12-03 | Axisymmetric cambered rotary variable displacement pump |
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| Publication Number | Publication Date |
|---|---|
| CN203023046U true CN203023046U (en) | 2013-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220650412 Withdrawn - After Issue CN203023046U (en) | 2012-12-03 | 2012-12-03 | Axisymmetric cambered rotary variable displacement pump |
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| CN (1) | CN203023046U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979723A (en) * | 2012-12-03 | 2013-03-20 | 宜兴市宙斯泵业有限公司 | Axisymmetric curved surface rotary variable displacement pump |
-
2012
- 2012-12-03 CN CN 201220650412 patent/CN203023046U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979723A (en) * | 2012-12-03 | 2013-03-20 | 宜兴市宙斯泵业有限公司 | Axisymmetric curved surface rotary variable displacement pump |
| CN102979723B (en) * | 2012-12-03 | 2016-01-06 | 宜兴市宙斯泵业有限公司 | Axisymmetric curved surface rotary volume-variable pump |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130626 Effective date of abandoning: 20160106 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |