CN103615388B - A kind of reciprocating pump rotary core type circumference flow distribution apparatus - Google Patents
A kind of reciprocating pump rotary core type circumference flow distribution apparatus Download PDFInfo
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- CN103615388B CN103615388B CN201310706752.5A CN201310706752A CN103615388B CN 103615388 B CN103615388 B CN 103615388B CN 201310706752 A CN201310706752 A CN 201310706752A CN 103615388 B CN103615388 B CN 103615388B
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Abstract
The invention belongs to hydraulic power transmission and output unit technical field, relate to a kind of reciprocating pump rotary core type circumference flow distribution apparatus; Plunger is fixedly mounted in the cavity of the pump housing, and sliding sleeve is arranged in the pump housing, and open above the inner chamber of plunger and be shaped with pore, the madial wall of plunger is shaped with radial hole, radial hole is equipped with holddown spring and follower pin; Spool is arranged on below sliding sleeve, the outside of spool is spool perisporium, the annular cavity formed between spool axis and spool perisporium and plunger lower end surface form pump chamber, the lower end surface of spool is shaped with spool bore, spool axis is shaped with cam path, spool perisporium is shaped with assignment hole, and the right side of spool perisporium is liquid entrance, and the left side is liquid outlet; Cam path, follower pin and plunger on spool, spool axis periphery form modification direct acting cylinder channel cam mechanism; Its compact structure, volumetric efficiency is high, stable performance, and the pressure loss is little, and good energy-conserving effect is widely used, and industrialization prospect is wide.
Description
Technical field:
The invention belongs to hydraulic power transmission and output unit technical field, relate to a kind of reciprocating pump rotary core type circumference flow distribution apparatus.
Background technique:
Pump industry about consumes 20% electric energy, and be the second largest mechanical and electrical industry being only second to automobile in the world, wherein reciprocating pump is applied very general in fluid engine, crude oil transportation, gas station, pumping plant, mechanically moving and solid mechanical.At present, the most serious problem of reciprocating pump is that flow system architecture is loose huge, efficiency is low, unstable properties, existing distributing construction has disc type flow and valve type flow two kinds, disc type flow is mainly used in inclined disc type with on oblique axis type hydraulic motor or oil hydraulic pump, reciprocating pump does not adopt disc type flow, disc type flow utilizes between swash plate and plunger and relatively rotates to regulate the opening and closing into and out of liquid mouth, this flow mode can occur because of swash plate wearing and tearing at work leaking, and causes volumetric efficiency to reduce; Reciprocating pump, gear pump etc. mainly adopt valve type flow, valve type flow mainly contains one-way valve flow and switch valve flow two kinds, and these two kinds of flow modes have many drawbacks: one is that one-way valve and switch valve volume are large, needs pipe joint to connect, the size of pipe joint is also comparatively large, and easily leaks; Two is that the bore of one-way valve and switch valve is less, and have part throttle effect, the pressure loss is large; Three is the dispersions of flow system architecture, and fixed installation and inconvenience strengthen it and loading the layout difficulty on object; Four is flowing states of an oil hydraulic pump and the multiple hydrovalve together whole hydraulic system liquid of regulable control, and especially as the hydrovalve of HYDRAULIC CONTROL SYSTEM element, due to complex structure, required precision is higher, causes manufacture cost high, expensive; The many valves of single pump make the moving line of liquid extend, and build-up of pressure loses, although pump and valve are high precision components, also there is error, the flow link of the many valves of single pump, whole distributing construction number of components is increased, and cumulative error increases; Five is that the volumetric efficiency of valve is comparatively large by the operating frequency influences of pump, once depart from its declared working condition, volumetric efficiency significantly reduces.Therefore, the reciprocating pump rotary core type circumference flow distribution apparatus seeking a kind of compact structure, volumetric efficiency high has great importance.
Summary of the invention:
The object of the invention is mainly to overcome the reciprocating pump shortcoming that traditional flow system volume efficiency is low, the pressure loss is large, volume is large, cost is high, seek that a kind of cost is low, compact structure, the pressure loss are little, volumetric efficiency is high, the reciprocating pump rotary core type of stable performance circumference flow distribution apparatus, realize mechanical energy to hydraulic pressure transformation of energy and output.
In order to realize foregoing invention object, the present invention makes full use of the to-and-fro motion of plunger, the ingenious continuous unidirectional rotary motion utilizing modification direct acting cylinder channel cam mechanism the linear reciprocating motion of plunger to be converted into spool, the continuous unidirectional rotary motion of recycling spool realize plunger up time pump chamber and the liquid entrance UNICOM of its side face suck liquid, plunger descending time pump chamber and the liquid of its side face export UNICOM and extrude liquid, complete liquid and transport and pump liquid process.
Agent structure of the present invention comprises the pump housing, liquid entrance, holddown spring, follower pin, sliding sleeve, plunger, spool, liquid outlet and pump chamber, and wherein spool comprises spool axis, spool perisporium, cam path, spool bore and assignment hole; Rise and to support and Environmental Conditions residing for the pump housing of the shape of the pump housing of connection function and equipment Requirement design; The plunger of hollow cylindrical structure is fixedly mounted in the cavity of the pump housing, and the sliding sleeve installation by adhering that wear-resisting or self lubricating material is made, in the pump housing, play the guiding role to plunger; Sliding sleeve and plunger fit tightly, and plunger moves back and forth vertically under external force in sliding sleeve; Open the pore being shaped with and communicating with outside atmosphere above the round cavity of plunger, when plunger is up, outside atmosphere enters round cavity by pore, and when plunger is descending, the gas of round cavity is discharged by pore; The madial wall of plunger is shaped with radial hole, radial hole is equipped with holddown spring and follower pin, holddown spring cover is in follower pin, holddown spring is helical spring, follower pin is straight pin, and follower pin and radial hole Spielpassung, when follower pin moves back and forth up and down with plunger, follower pin, under the effect of holddown spring, is pressed against in the cam path of spool; Spool is arranged on below sliding sleeve, spool in the cavity of the pump housing with pump housing inwall Spielpassung, be subject to the limitation and restriction of sliding sleeve lower end surface during spool displacement vertically, only can be rotated about axis; The centre of spool is spool axis, the round cavity Spielpassung of spool axis and plunger; The outside of spool is spool perisporium, and the annular cavity formed between spool axis and spool perisporium and plunger lower end surface form pump chamber, and when plunger moves up and down, pump chamber becomes large or diminishes, the corresponding process sucking or pump liquid; The lower end surface of spool is shaped with one by the spool bore of spool bottom surface and pump chamber UNICOM, and liquid is guided to spool bottom surface and pump housing contact friction face by spool bore, plays Cooling and Lubricator effect; Spool axis is shaped with cam path, cam path closes around the three-sixth turn of spool axis, realize the unidirectional continuous rotation of spool, the cam path degree of depth is everywhere different, when plunger is up with follower pin, half cycle cam path corresponding on spool axis shoals gradually from bottom to the top degree of depth, deepens suddenly to during the top, now follower pin press against under the effect of holddown spring depth of cam groove place cannot repeat when plunger commutates before the half cycle cam path circuit of passing by; When plunger is descending with follower pin, the cam path of another half cycle corresponding on spool axis is from also shoaling gradually to bottom above, suddenly deepen to time bottom, now follower pin press against under the effect of holddown spring depth of cam groove place cannot repeat when plunger commutates before the half cycle cam path circuit of passing by; Circulation like this constantly realizes spool along with plunger reciprocates and does unidirectional continuous rotation; Spool perisporium is shaped with assignment hole, and the width of the circumferencial direction of assignment hole can not make liquid entrance and liquid export UNICOM, otherwise cannot transport and pump pressure liquid; The length of assignment hole axis to the upper limb of perisporium, can make the resistance that circulation area is maximum, liquid passes in and out pump chamber of liquid turnover pump chamber minimum, makes the volumetric efficiency of whole flow distribution apparatus the highest from the lower edge of valve element circle toroidal cavity is upwards maximum; Spool perisporium coordinates with pump housing high-precision gap, and the right side of spool perisporium is liquid entrance, and the left side is liquid outlet, and liquid entrance and liquid export the width being greater than assignment hole circumference in the distance of circumferencial direction; Along with piston reciprocation moves the rotation with spool, assignment hole when plunger is up with circumference liquid entrance UNICOM, pump chamber become suck liquid greatly; Assignment hole exports UNICOM when plunger is descending with the liquid of circumference, and pump chamber diminishes extrusion liquid, realizes transporting and supercharging of liquid; Cam path, follower pin and plunger on spool, spool axis periphery form modification direct acting cylinder channel cam mechanism, this modification direct acting cylinder channel cam mechanism is utilized the linear reciprocating motion of plunger to be converted into the continuous unidirectional rotary motion of spool, the continuous unidirectional rotary motion of recycling spool realize plunger up time pump chamber and the liquid entrance UNICOM of its side face suck liquid, plunger descending time pump chamber and the liquid of its side face export UNICOM and extrude liquid, complete liquid and transport and pump liquid process.
The present invention is when reciprocating plunger pump work, external force drives plunger reciprocates, plunger drives holddown spring and the motion of follower pin synchronous reciprocating, and follower pin is pressed against in cam path under holddown spring effect, when plunger is up, follower pin is stirred spool by cam path and is turned right, now assignment hole and liquid entrance UNICOM, liquid enters pump chamber by liquid entrance, because the degree of depth of cam path shoals gradually, the length of follower pin in cam path diminishes, and the active force by holddown spring is increasing; When plunger motion is to top dead center, valve core rotation 180 degree, follower pin is to the upper end of cam path, and now cam path deepens suddenly appearance step, and follower pin is overhanging suddenly under the effect of holddown spring presses against cam path depths, when plunger is descending, follower pin stops by cam path step, cannot get back to and repeat the half cycle cam path of just having passed by, can only move along another half cycle cam path, promoting spool and rotate continuously in the same way, assignment hole and liquid export UNICOM, and liquid is extruded by plunger by liquid outlet; The degree of depth due to cam path when plunger is descending shoals gradually, and the length of follower pin in cam path diminishes, and the active force by holddown spring is increasing; When plunger motion is to lower dead center, spool is rotated further 180 degree, follower pin just in time arrives the lower end of cam path, and now cam path deepens suddenly appearance step, and follower pin is overhanging suddenly under the effect of holddown spring presses against cam path depths, when plunger is up again, follower pin stops by cam path step, cannot get back to and repeat the half cycle cam path of just having passed by, can only move along another half cycle cam path, promoting spool and rotate continuously in the same way, circulation like this is continuous, realizes liquid and transports and Output pressure.
The present invention compared with prior art, achieve the flow function of reciprocating pump, working medium can be the various fluids such as oil, water and gas, its compact structure, and volumetric efficiency is high, stable performance, not by the impact of pump work frequency, the pressure loss is little, good energy-conserving effect, be widely used, industrialization prospect is wide.
Accompanying drawing illustrates:
Fig. 1 is agent structure principle schematic of the present invention.
Fig. 2 is section plan structure principle schematic of the present invention.
Fig. 3 is the valve core structure principle schematic that the present invention relates to.
Embodiment:
Also be described further by reference to the accompanying drawings below by embodiment.
Embodiment:
The agent structure pump housing 1 of the present embodiment, liquid entrance 2, holddown spring 3, follower pin 4, sliding sleeve 5, plunger 6, spool 7, liquid export 8 and pump chamber 9, and wherein spool 7 comprises spool axis 10, spool perisporium 11, cam path 12, spool bore 13 and assignment hole 14; Rise and to support and environment residing for the pump housing 1 of the shape of the pump housing 1 of connection function and equipment Requirement design; The plunger 6 of hollow cylindrical structure is fixedly mounted in the cavity of the pump housing 1, and sliding sleeve 5 installation by adhering that wear-resisting or self lubricating material is made, in the pump housing 1, play the guiding role to plunger 6; Sliding sleeve 5 and plunger 6 fit tightly, and plunger 6 moves back and forth vertically under external force in sliding sleeve 5; Open the pore being shaped with and communicating with outside atmosphere above the round cavity of plunger 6, when plunger 6 is up, outside atmosphere enters round cavity by pore, and when plunger 6 is descending, the gas of round cavity is discharged by pore; The madial wall of plunger 6 is shaped with radial hole, radial hole is equipped with holddown spring 3 and follower pin 4, holddown spring 3 overlaps in follower pin 4, holddown spring 3 is helical spring, and follower pin 4 is straight pin, follower pin 4 and radial hole Spielpassung, as shown in Figure 1, radial hole overlaps with follower pin 4, therefore, does not indicate radial hole in Fig. 1; When follower pin 4 moves back and forth up and down with plunger 6, follower pin 4, under the effect of holddown spring 3, is pressed against in the cam path 12 of spool 7; Spool 7 is arranged on below sliding sleeve 5, spool 7 in the cavity of the pump housing 1 with the pump housing 1 inwall Spielpassung, be subject to the limitation and restriction of sliding sleeve 5 lower end surface during spool 7 displacement vertically, only can be rotated about axis; The centre of spool 7 is spool axis 10, the round cavity Spielpassung of spool axis 10 and plunger 6; The outside of spool 7 is spool perisporium 11, and the annular cavity formed between spool axis 10 and spool perisporium 11 and plunger 6 lower end surface form pump chamber 9, and when plunger 6 moves up and down, pump chamber 9 becomes large or diminishes, the corresponding process sucking or pump liquid; The lower end surface of spool 7 is shaped with one by the spool bore 13 of spool 7 bottom surface and pump chamber 9 UNICOM, and liquid is guided to spool 7 bottom surface and the pump housing 1 contact friction face by spool bore 13, plays Cooling and Lubricator effect; Spool axis 10 is shaped with cam path 12, cam path 12 closes around spool axis 10 three-sixth turn, realize the unidirectional continuous rotation of spool 7, cam path 12 degree of depth is everywhere different, when plunger 6 is up with follower pin 4, half cycle cam path 12 corresponding on spool axis 10 shoals gradually from bottom to the top degree of depth, suddenly deepen to time topmost, now follower pin 4 press against under the effect of holddown spring 3 cam path 12 depths cannot repeat when plunger 6 commutates before half cycle cam path 12 circuit of passing by; When plunger 6 is descending with follower pin 4, the cam path 12 of another half cycle corresponding on spool axis 10 is from also shoaling gradually to bottom above, suddenly deepen to time bottom, now follower pin 4 press against under the effect of holddown spring 3 cam path 12 depths cannot repeat when plunger 6 commutates before half cycle cam path 12 circuit of passing by; Circulation like this constantly realizes spool 7 along with plunger 6 to-and-fro motion and does unidirectional continuous rotation; Spool 7 perisporium is shaped with assignment hole 14, and the width of the circumferencial direction of assignment hole 14 can not make liquid entrance 2 and liquid export 8 UNICOMs, otherwise cannot transport and pump pressure liquid; The length of assignment hole 14 axis to the upper limb of perisporium, can make the resistance that circulation area is maximum, liquid passes in and out pump chamber 9 of liquid turnover pump chamber 9 minimum, makes the volumetric efficiency of whole flow distribution apparatus the highest from the lower edge of spool 7 annular cavity is upwards maximum; Spool perisporium 11 coordinates with the pump housing 1 high-precision gap, and the right side of spool perisporium 11 is liquid entrance 2, and the left side is liquid outlet 8, and liquid entrance 2 and liquid export 8 to be greater than assignment hole 13 circumference width in the distance of circumferencial direction; Along with plunger 6 moves back and forth the rotation with spool 7, assignment hole 13 when plunger 6 is up with liquid entrance 2 UNICOM of circumference, pump chamber 9 becomes and sucks liquid greatly; Assignment hole 13 exports 8 UNICOMs when plunger 6 is descending with the liquid of circumference, and pump chamber 9 diminishes extrusion liquid, realizes transporting and supercharging of liquid; Cam path 12, follower pin 4 and plunger 6 on spool 7, spool axis 10 periphery form modification direct acting cylinder channel cam mechanism, this modification direct acting cylinder channel cam mechanism is utilized the linear reciprocating motion of plunger 6 to be converted into the continuous unidirectional rotary motion of spool 7, the continuous unidirectional rotary motion of recycling spool 7 realize plunger 6 up time pump chamber 9 and liquid entrance 2 UNICOM of its side face sucks liquid, plunger 6 descending time pump chamber 9 and the liquid of its side face export 8 UNICOMs and extrude liquid, complete liquid and transport and pump liquid process.
The present embodiment is when reciprocating plunger 6 pump work, external force drives plunger 6 to-and-fro motion, plunger 6 drives holddown spring 3 and the motion of follower pin 4 synchronous reciprocating, follower pin 4 is pressed against in cam path 12 under holddown spring 3 acts on, when plunger 6 is up, follower pin 4 is stirred spool 7 by cam path 12 and is turned right (rotating counterclockwise when Fig. 1 overlooks), now assignment hole and liquid entrance 2 UNICOM, liquid enters pump chamber 9 by liquid entrance 2, because the degree of depth of cam path 12 shoals gradually, the length of follower pin 4 in cam path 12 diminishes, active force by holddown spring 3 is increasing, when plunger 6 moves to top dead center, spool 7 rotates 180 degree, follower pin 4 is to the upper end of cam path 12, now cam path 12 deepens suddenly appearance step, follower pin 4 is overhanging suddenly under the effect of holddown spring 3 presses against cam path 12 depths, when plunger 6 is descending, follower pin 4 stops by cam path 12 step, cannot get back to and repeat the half cycle cam path 12 of just having passed by, can only move along another half cycle cam path 12, promote spool 7 to rotate continuously in the same way, assignment hole and liquid export 8 UNICOMs, and liquid is extruded by plunger 6 by liquid outlet 8, because the degree of depth of cam path 12 shoals gradually when plunger 6 is descending, the length of follower pin 4 in cam path 12 diminishes, and the active force by holddown spring 3 is increasing, when plunger 6 moves to lower dead center, spool 7 is rotated further 180 degree, follower pin 4 just in time arrives the lower end of cam path 12, now cam path 12 deepens suddenly appearance step, follower pin 4 is overhanging suddenly under the effect of holddown spring 3 presses against cam path 12 depths, when plunger 6 is up again, follower pin 4 stops by cam path 12 step, cannot get back to and repeat the half cycle cam path 12 of just having passed by, can only move along another half cycle cam path 12, promote spool 7 to rotate continuously in the same way, circulation like this is continuous, realizes liquid and transports and Output pressure.
Claims (2)
1. a reciprocating pump rotary core type circumference flow distribution apparatus, it is characterized in that agent structure comprises the pump housing, liquid entrance, holddown spring, follower pin, sliding sleeve, plunger, spool, liquid outlet and pump chamber, wherein spool comprises spool axis, spool perisporium, cam path, spool bore and assignment hole; Rise and to support and Environmental Conditions residing for the pump housing of the shape of the pump housing of connection function and equipment Requirement design; The plunger of hollow cylindrical structure is fixedly mounted in the cavity of the pump housing, and the sliding sleeve installation by adhering that wear-resisting or self lubricating material is made, in the pump housing, play the guiding role to plunger; Sliding sleeve and plunger fit tightly, and plunger moves back and forth vertically under external force in sliding sleeve; Open the pore being shaped with and communicating with outside atmosphere above the round cavity of plunger, when plunger is up, outside atmosphere enters round cavity by pore, and when plunger is descending, the gas of round cavity is discharged by pore; The madial wall of plunger is shaped with radial hole, radial hole is equipped with holddown spring and follower pin, holddown spring cover is in follower pin, holddown spring is helical spring, follower pin is straight pin, and follower pin and radial hole Spielpassung, when follower pin moves back and forth up and down with plunger, follower pin, under the effect of holddown spring, is pressed against in the cam path of spool; Spool is arranged on below sliding sleeve, spool in the cavity of the pump housing with pump housing inwall Spielpassung, be subject to the limitation and restriction of sliding sleeve lower end surface during spool displacement vertically, only can be rotated about axis; The centre of spool is spool axis, the round cavity Spielpassung of spool axis and plunger; The outside of spool is spool perisporium, and the annular cavity formed between spool axis and spool perisporium and plunger lower end surface form pump chamber, and when plunger moves up and down, pump chamber becomes large or diminishes, the corresponding process sucking or pump liquid; The lower end surface of spool is shaped with one by the spool bore of spool bottom surface and pump chamber UNICOM, and liquid is guided to spool bottom surface and pump housing contact friction face by spool bore, plays Cooling and Lubricator effect; Spool axis is shaped with cam path, cam path closes around the three-sixth turn of spool axis, realize the unidirectional continuous rotation of spool, the cam path degree of depth is everywhere different, when plunger is up with follower pin, half cycle cam path corresponding on spool axis shoals gradually from bottom to the top degree of depth, deepens suddenly to during the top, now follower pin press against under the effect of holddown spring depth of cam groove place cannot repeat when plunger commutates before the half cycle cam path circuit of passing by; When plunger is descending with follower pin, the cam path of another half cycle corresponding on spool axis is from shoaling gradually to bottom above, suddenly deepen to time bottom, now follower pin press against under the effect of holddown spring depth of cam groove place cannot repeat when plunger commutates before the half cycle cam path circuit of passing by; Circulation like this constantly realizes spool along with plunger reciprocates and does unidirectional continuous rotation; Spool perisporium is shaped with assignment hole, and the width restriction liquid entrance of the circumferencial direction of assignment hole and liquid export UNICOM, realize transporting and pump pressure liquid; The length of assignment hole axis, from upper limb upward to perisporium of the lower edge of valve element circle toroidal cavity, makes liquid pass in and out the circulation area resistance that is maximum, liquid turnover pump chamber of pump chamber minimum, makes the volumetric efficiency of whole flow distribution apparatus the highest; Spool perisporium coordinates with pump housing high-precision gap, and the right side of spool perisporium is liquid entrance, and the left side is liquid outlet, and liquid entrance and liquid export the width being greater than assignment hole circumference in the distance of circumferencial direction; Along with piston reciprocation moves the rotation with spool, assignment hole when plunger is up with circumference liquid entrance UNICOM, pump chamber become suck liquid greatly; Assignment hole exports UNICOM when plunger is descending with the liquid of circumference, and pump chamber diminishes extrusion liquid, realizes transporting and supercharging of liquid; Cam path, follower pin and plunger on spool, spool axis periphery form modification direct acting cylinder channel cam mechanism, this modification direct acting cylinder channel cam mechanism is utilized the linear reciprocating motion of plunger to be converted into the continuous unidirectional rotary motion of spool, the continuous unidirectional rotary motion of recycling spool realize plunger up time pump chamber and the liquid entrance UNICOM of its side face suck liquid, plunger descending time pump chamber and the liquid of its side face export UNICOM and extrude liquid, complete liquid and transport and pump liquid process.
2. reciprocating pump rotary core type circumference flow distribution apparatus according to claim 1, it is characterized in that when reciprocating plunger pump work, external force drives plunger reciprocates, plunger drives holddown spring and the motion of follower pin synchronous reciprocating, follower pin is pressed against in cam path under holddown spring effect, when plunger is up, follower pin is stirred spool by cam path and is turned right, now assignment hole and liquid entrance UNICOM, liquid enters pump chamber by liquid entrance, because the degree of depth of cam path shoals gradually, the length of follower pin in cam path diminishes, active force by holddown spring is increasing, when plunger motion is to top dead center, valve core rotation 180 degree, follower pin is to the upper end of cam path, and now cam path deepens suddenly appearance step, and follower pin is overhanging suddenly under the effect of holddown spring presses against cam path depths, when plunger is descending, follower pin stops by cam path step, cannot get back to and repeat the half cycle cam path of just having passed by, can only move along another half cycle cam path, promoting spool and rotate continuously in the same way, assignment hole and liquid export UNICOM, and liquid is extruded by plunger by liquid outlet, the degree of depth due to cam path when plunger is descending shoals gradually, and the length of follower pin in cam path diminishes, and the active force by holddown spring is increasing, when plunger motion is to lower dead center, spool is rotated further 180 degree, follower pin just in time arrives the lower end of cam path, and now cam path deepens suddenly appearance step, and follower pin is overhanging suddenly under the effect of holddown spring presses against cam path depths, when plunger is up again, follower pin stops by cam path step, cannot get back to and repeat the half cycle cam path of just having passed by, can only move along another half cycle cam path, promoting spool and rotate continuously in the same way, circulation like this is continuous, realizes liquid and transports and Output pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310706752.5A CN103615388B (en) | 2013-12-20 | 2013-12-20 | A kind of reciprocating pump rotary core type circumference flow distribution apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310706752.5A CN103615388B (en) | 2013-12-20 | 2013-12-20 | A kind of reciprocating pump rotary core type circumference flow distribution apparatus |
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| Publication Number | Publication Date |
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| CN103615388A CN103615388A (en) | 2014-03-05 |
| CN103615388B true CN103615388B (en) | 2016-02-17 |
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| CN201310706752.5A Expired - Fee Related CN103615388B (en) | 2013-12-20 | 2013-12-20 | A kind of reciprocating pump rotary core type circumference flow distribution apparatus |
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| CN107061212B (en) * | 2017-04-20 | 2019-04-30 | 太原理工大学 | A kind of four hydraulic fluid port shaft orientation plunger variable pump of low noise parallel connection distributing construction |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0840010A2 (en) * | 1996-10-29 | 1998-05-06 | Shimadzu Corporation | Plunger pump |
| CN101303009A (en) * | 2008-05-30 | 2008-11-12 | 吴杰 | Follow-up hydraulic pumps |
| CN102536789A (en) * | 2010-11-01 | 2012-07-04 | 哥特赫提Com有限公司 | Telescopic piston for pump |
| CN202659469U (en) * | 2012-06-11 | 2013-01-09 | 常州市冠腾石油装备有限公司 | Energy-saving motor oil-well pump |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201474885U (en) * | 2009-08-24 | 2010-05-19 | 台州市振兴加湿设备有限公司 | Plunger oil less high pressure pump |
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2013
- 2013-12-20 CN CN201310706752.5A patent/CN103615388B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0840010A2 (en) * | 1996-10-29 | 1998-05-06 | Shimadzu Corporation | Plunger pump |
| CN101303009A (en) * | 2008-05-30 | 2008-11-12 | 吴杰 | Follow-up hydraulic pumps |
| CN102536789A (en) * | 2010-11-01 | 2012-07-04 | 哥特赫提Com有限公司 | Telescopic piston for pump |
| CN202659469U (en) * | 2012-06-11 | 2013-01-09 | 常州市冠腾石油装备有限公司 | Energy-saving motor oil-well pump |
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Granted publication date: 20160217 Termination date: 20171220 |