CN201496222U - Electric plunger piston pump - Google Patents
Electric plunger piston pump Download PDFInfo
- Publication number
- CN201496222U CN201496222U CN2009203076740U CN200920307674U CN201496222U CN 201496222 U CN201496222 U CN 201496222U CN 2009203076740 U CN2009203076740 U CN 2009203076740U CN 200920307674 U CN200920307674 U CN 200920307674U CN 201496222 U CN201496222 U CN 201496222U
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- plunger
- oil
- pump
- outlet
- pump housing
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Abstract
The utility model relates to a hydraulic pump, in particular to an electric plunger piston which uses an electric motor for controlling the rotation of an eccentric wheel to drive a plunger piston pump. A pump body is provided with an oil sucking hole and an oil outlet, a pump chamber is arranged in the pump body, the rotary shaft end of a speed reducing electric motor extends into the pump chamber, a plunger piston cylinder is arranged in the pump body and provided with an inlet communicated with the oil sucking hole and an outlet communicated with the oil outlet, a plunger piston chamber is between the inlet and the outlet, a plunger piston conducting or blocking the pipeline between the oil sucking hole and the oil outlet is arranged in the plunger piston chamber, an oil outlet one-way valve is arranged between the outlet and the oil outlet of the plunger piston chamber, and one end of the plunger piston extends into the pump chamber to be connected with an eccentric wheel fixed on the rotary shaft of the speed reducing electric motor. The cooperation of the speed reducing electric motor and the eccentric motor converts the rotary action into the movement of the plunger piston to complete oil suction or discharge. The utility model has simple whole structure, few parts and convenient assembly and processing.
Description
Technical field
The utility model relates to a kind of oil hydraulic pump, especially a kind of electrical plunger pump that adopts the rotation of Electric Machine Control eccentric wheel to drive plunger.
Background technique
Plunger pump is divided into axial piston pump and radial plunger pump, axial piston pump is that the volume-variation of utilizing plunger plunger cavity in the to-and-fro motion parallel with transmission shaft to be produced is carried out work, plunger and plunger cavity are circular pieces, adding the precision that can reach very high man-hour cooperates, so volumetric efficiency height, it is more steady to turn round, and discharge uniformity is better.The pump oil mechanism of plunger pump comprises two cover precision pairs: the plunger coupled parts that plunger and plunger cavity constitute; the delivery valve matching parts that outlet valve and delivery valve seat constitute; outlet valve is an one-way valve; under the spring pressure effect; the conical surface on the valve tightly cooperates with valve seat, and is when fuel cut-off, that high-pressure oil pipe and plunger upper end cavity is isolated; prevent to pour in down a chimney the protection oil pump.
Plunger pump commonly used has a swash plate, in the transmission shaft rotation, swash plate is rotation synchronously and then, compression simultaneously or expansion plunger cavity, carry out oil suction or oil extraction action, but responsive to the damage ratio of hydraulic oil, the structure more complicated, cost than higher, need power to drive transmission shaft rotation, the noise of formation is bigger.
Patent Office of the People's Republic of China has announced a CN2519100Y patent on October 30th, 2002, name is called the novel pneumatic oil feed pump, comprise the pump housing that refuels one-way valve, oil-storing barrel, Normally closed type two-position three way air operated reversing valve and be attached thereto, be provided with cylinder cap, cylinder barrel, piston, plunger, plunger hole in the pump housing, the safety overflow valve in oil extraction one-way valve, oil sucting one-way valve, valve body, pressure regulator valve, oil inlet hole, spill port, draining hole, this oil feed pump internal structure complexity, assembling and processing are all cumbersome.
Summary of the invention
The utility model the utility model relates to a kind of oil hydraulic pump, especially a kind of electrical plunger pump that adopts the rotation of Electric Machine Control eccentric wheel to drive plunger.Provide a kind of simple in structure, assemble electrical plunger pump easy to process.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of electrical plunger pump, comprise oil-storing barrel, the pump housing and reducing motor, reducing motor links to each other with the pump housing, the pump housing links to each other with oil-storing barrel, wherein, offer an oil-sucking hole and an oil outlet on the pump housing, be provided with a pump chamber in the pump housing, the rotating shaft end of reducing motor extend in the pump chamber, be provided with plunger case in the pump housing, offer on the plunger case and the oil-sucking hole inlet communicating, the outlet that communicates with oil outlet, between inlet and the outlet is plunger cavity, the plunger of the pipeline between conducting/blocking-up oil-sucking hole and the oil outlet is set in the plunger cavity, is provided with fuel-displaced one-way valve between the outlet of plunger cavity and the oil outlet, an end of plunger extend in the pump chamber be fixed on the reducing motor rotating shaft on eccentric wheel link to each other.The reducing motor rotation drives the rotating shaft rotation, and the eccentric wheel rotation in the rotating shaft drives plunger and does straight line motion, the oil suction of plunger expansion plunger cavity, and the chamber oil extraction of plunger compression plunger, fuel-displaced one-way valve prevents that pressure oil from pouring in down a chimney into plunger cavity, damages plunger case.
As preferably, be provided with horizontal connecting passage between the oil-sucking hole of the pump housing and the oil outlet, connecting passage is a shoulder hole, end diameter towards the pump housing outside is big, the large diameter end inwall place of connecting passage is provided with screw thread, oil-sucking hole is at the path place of connecting passage, and oil outlet is at the place, big footpath of connecting passage.Connecting passage is that shoulder hole can position plunger case, thereby guarantees the inlet aligning oil-sucking hole on the plunger casing wall.
As preferably, an end of plunger case is the convex edge, and plunger cavity is in the neutral position of plunger case, and inlet is arranged on the plunger cavity wall, and outlet is at the opening end of plunger cavity, and plunger case is with seal ring near the place, convex edge.Match with the reducing place of shoulder hole and position in the convex edge, and spin nut is fixed on plunger case.
As preferably, after being set in the pump housing, plunger case on the pump housing, is rotary with plug, plunger case is inserted into behind the connecting passage and extend in the pump chamber, convex edge on the plunger case is positioned by the reducing position at connecting passage place, be rotary with nut at the end place that plunger case stretches into pump chamber and fix plunger case, fuel-displaced one-way valve is placed between the outlet of plug and plunger case, and the axis position of plug is provided with the cylinder chamber of indent, the plug radial direction is provided with the through hole that connects plug, and through hole communicates with the oil outlet of the pump housing.Connecting passage needs to block with plug behind the assembling plunger case as auxiliary hole, and the outlet of plunger case simultaneously is provided with fuel-displaced one-way valve, and plug can be fixed the spring of fuel-displaced one-way valve simultaneously, guarantees the setting pressure that fuel-displaced one-way valve is fuel-displaced.
As preferably, fuel-displaced one-way valve comprises valve plate, valve ball and spring, and the outlet of valve plate and plunger case is joined, and is provided with valve port in the middle of the valve plate, and valve ball is placed on the valve port and by spring and withstands valve ball, and the other end of spring withstands the plug that is fixed on the pump housing.Valve plate is connected with plunger end, and the centre of valve plate is the valve port of projection, and the inboard of valve port is a cambered surface, and plug is fixed valve plate, considers the Security that is linked and packed simultaneously, is equipped with flexible valve pocket on the valve port of valve plate.
As preferably, offer overflow passage on the pump housing, overflow passage is communicated with oil-storing barrel and oil outlet, overflow passage is provided with relief valve, overflow passage be fixed on the pump housing on plug on through hole communicate.In the overpressure of oil outlet or after closing, lubricant oil can overflow back oil-storing barrel again by relief valve, reduce the pressure at oil outlet place, next oil extraction can be carried out smoothly.
As preferably, after plunger is inserted into plunger cavity, be fixed with land on the plunger of plunger cavity outside, the portion of external that plunger case extend in the pump chamber is equipped with piston spring, one end of piston spring withstands land, and the other end of piston spring withstands the nut that is spun on the plunger case.
As preferably, be provided with closed piston in the oil-storing barrel, the closed piston neutral position is connected with chain, and the other end of chain is connected on the position limit switch that is fixed on the oil-storing barrel top, and closed piston floats on the interior pasta of oil-storing barrel.Piston descends and descends along with pasta, drops to when setting the bottom,, signal is passed to computerized control system PLC or buzzer carry out oil starvation and report to the police, so that in time refuel the contacting in the dry reed-pipe in the switch lever by magnetic.
The beneficial effects of the utility model are: matched by reducing motor and eccentric wheel, convert spinning movement to the plunger moving movement, finish the action of oil suction and oil extraction, overall structure is simple, and parts are less, assembles and process more convenient.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model;
Fig. 2 is a kind of partial enlarged drawing of the utility model;
Among the figure: 1, position limit switch, 2, oil-storing barrel, 3, chain, 4, piston, 5, oil-sucking hole, 6, relief valve, 7, plug, 8, oil outlet, 9, nut, 10, plunger, 11, land, 12, plunger case, 13, piston spring, 14, pump chamber, 15, eccentric wheel, 16, reducing motor, 17, cylinder chamber, 18, spring, 19, through hole, 20, the convex edge, 21, seal ring, 22, valve plate, 23, valve pocket, 24, valve ball, 25, plunger cavity, 26, outlet.
Embodiment
Below by specific embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: a kind of electrical plunger pump (referring to accompanying drawing 1 accompanying drawing 2), comprise oil-storing barrel 2, the pump housing and reducing motor 16, reducing motor links to each other with the pump housing, the pump housing links to each other with oil-storing barrel, offer an oil-sucking hole 5 and an oil outlet 8 on the pump housing, be provided with a pump chamber 14 in the pump housing, pump chamber connects the rotating shaft end of reducing motor, be provided with horizontal connecting passage between the oil-sucking hole of the pump housing and the oil outlet, connecting passage is a shoulder hole, end diameter towards the pump housing outside is big, the large diameter end inwall place of connecting passage is provided with screw thread, oil-sucking hole is at the path place of connecting passage, oil outlet is at the place, big footpath of connecting passage, be provided with plunger case 12 in the pump housing, offer on the plunger case and the oil-sucking hole inlet communicating, the outlet 26 that communicates with oil outlet, between inlet and the outlet is plunger cavity 25, the plunger 10 of the pipeline between conducting/blocking-up oil-sucking hole and the oil outlet is set in the plunger cavity, be provided with fuel-displaced one-way valve between the outlet of plunger cavity and the oil outlet, an end of plunger extend in the pump chamber be fixed on the reducing motor rotating shaft on eccentric wheel 15 link to each other; One end of plunger case is convex edge 20, and plunger cavity is in the neutral position of plunger case, and inlet is arranged on the plunger cavity wall, and outlet is at the opening end of plunger cavity, and plunger case is with seal ring 21 near the place, convex edge; After being set in the pump housing, plunger case on the pump housing, is rotary with plug 7, plunger case is inserted into behind the connecting passage and extend in the pump chamber, convex edge on the plunger case is positioned by the reducing position at connecting passage place, be rotary with nut 9 at the end place that plunger case stretches into pump chamber and fix plunger case, fuel-displaced one-way valve is placed between the outlet of plug and plunger case, the axis position of plug is provided with the cylinder chamber 17 of indent, and the plug radial direction is provided with the through hole 19 that connects plug, and through hole communicates with the oil outlet of the pump housing; Fuel-displaced one-way valve comprises valve plate 22, valve pocket 23, valve ball 24 and spring 18, the outlet of valve plate and plunger case is joined, be provided with valve port in the middle of the valve plate, the valve port inwall is the cambered surface that matches with valve ball, valve port is equipped with flexible valve pocket outward, valve ball is placed on the valve port and by spring and withstands valve ball, and the other end of spring is put in the cylinder chamber of plug and withstood plug; After plunger is inserted into plunger cavity, be fixed with land 11 on the plunger of plunger cavity outside, the portion of external that plunger case extend in the pump chamber is equipped with piston spring 13, and an end of piston spring withstands land, and the other end of piston spring withstands the nut that is spun on the plunger case; Offer overflow passage on the pump housing, overflow passage is communicated with oil-storing barrel and oil outlet, and overflow passage is provided with relief valve 6, overflow passage be fixed on the pump housing on plug on through hole communicate; Be provided with closed piston 4 in the oil-storing barrel, the closed piston neutral position is connected with chain 3, and the other end of chain is connected on the position limit switch 1 that is fixed on the oil-storing barrel top, and closed piston floats on the interior pasta of oil-storing barrel.
The rotation of reducing motor rotating band movable eccentric wheel, eccentric wheel moves the straight line that spinning movement converts plunger to, plunger moves to right and discharges the interior air of plunger cavity, plunger moves to left to make and forms negative pressure in the plunger cavity and suck lubricant oil by oil-sucking hole in oil-storing barrel, plunger moves to right, lubricant oil backs down the valve ball of fuel-displaced one-way valve and discharges from oil outlet, the plunger oil suction again that moves to left; If the overpressure of oil outlet, lubricant oil backs down relief valve, overflows back oil-storing barrel from relief valve; The interior lubricant oil volume of oil-storing barrel reduces, and the piston that floats on pasta descends simultaneously, drops to chain shake-up position limit switch when setting the bottom, and signal is passed to computerized control system PLC with position limit switch or buzzer carries out the oil starvation warning.
Above-described embodiment is a kind of preferred version of the present utility model, is not the utility model is done any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technological scheme that claim puts down in writing.
Claims (8)
1. electrical plunger pump, comprise oil-storing barrel (2), the pump housing and reducing motor (16), reducing motor links to each other with the pump housing, the pump housing links to each other with oil-storing barrel, it is characterized in that offering on the pump housing oil-sucking hole (5) and an oil outlet (8), be provided with a pump chamber (14) in the pump housing, the rotating shaft end of reducing motor extend in the pump chamber, be provided with plunger case (12) in the pump housing, offer on the plunger case and the oil-sucking hole inlet communicating, the outlet that communicates with oil outlet, between inlet and the outlet is plunger cavity, the plunger (10) of the pipeline between conducting/blocking-up oil-sucking hole and the oil outlet is set in the plunger cavity, be provided with fuel-displaced one-way valve between the outlet of plunger cavity and the oil outlet, an end of plunger extend in the pump chamber be fixed on the reducing motor rotating shaft on eccentric wheel (15) link to each other.
2. electrical plunger pump according to claim 1, it is characterized in that being provided with horizontal connecting passage between the oil-sucking hole of the pump housing and the oil outlet, connecting passage is a shoulder hole, end diameter towards the pump housing outside is big, the large diameter end inwall place of connecting passage is provided with screw thread, oil-sucking hole is at the path place of connecting passage, and oil outlet is at the place, big footpath of connecting passage.
3. electrical plunger pump according to claim 1, an end that it is characterized in that plunger case is convex edge (20), and plunger cavity is in the neutral position of plunger case, and inlet is arranged on the plunger cavity wall, outlet is at the opening end of plunger cavity, and plunger case is with seal ring (21) near the place, convex edge.
4. according to claim 1 or 2 or 3 described electrical plunger pumps, on the pump housing, be rotary with plug (7) after it is characterized in that being provided with in the pump housing plunger case, plunger case is inserted into behind the connecting passage and extend in the pump chamber, convex edge on the plunger case is positioned by the reducing position at connecting passage place, be rotary with nut at the end place that plunger case stretches into pump chamber and fix plunger case, fuel-displaced one-way valve is placed between the outlet of plug and plunger case, the axis position of plug is provided with the cylinder chamber (17) of indent, the plug radial direction is provided with the through hole (19) that connects plug, and through hole communicates with the oil outlet of the pump housing.
5. electrical plunger pump according to claim 1, it is characterized in that fuel-displaced one-way valve comprises valve plate (22), valve ball (24) and spring (18), the outlet of valve plate and plunger case is joined, be provided with valve port in the middle of the valve plate, valve ball is placed on the valve port and by spring and withstands valve ball, and the other end of spring withstands the plug that is fixed on the pump housing.
6. according to claim 1 or 2 or 3 or 5 described electrical plunger pumps, it is characterized in that offering on the pump housing overflow passage, overflow passage is communicated with oil-storing barrel and oil outlet, and overflow passage is provided with relief valve (6), overflow passage be fixed on the pump housing on plug on through hole communicate.
7. electrical plunger pump according to claim 1, after it is characterized in that plunger is inserted into plunger cavity, be fixed with land (11) on the plunger of plunger cavity outside, the portion of external that plunger case extend in the pump chamber is equipped with piston spring (13), one end of piston spring withstands land, and the other end of piston spring withstands the nut (9) that is spun on the plunger case.
8. electrical plunger pump according to claim 1, it is characterized in that being provided with in the oil-storing barrel closed piston (4), the closed piston neutral position is connected with chain (3), and the other end of chain is connected on the position limit switch (1) that is fixed on the oil-storing barrel top, and closed piston floats on the interior pasta of oil-storing barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203076740U CN201496222U (en) | 2009-08-10 | 2009-08-10 | Electric plunger piston pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203076740U CN201496222U (en) | 2009-08-10 | 2009-08-10 | Electric plunger piston pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201496222U true CN201496222U (en) | 2010-06-02 |
Family
ID=42439430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203076740U Expired - Fee Related CN201496222U (en) | 2009-08-10 | 2009-08-10 | Electric plunger piston pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201496222U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671356A (en) * | 2013-12-31 | 2014-03-26 | 常州国源离合器有限公司 | Environment-friendly water medium hydraulic cylinder tube |
| CN105422410A (en) * | 2015-12-03 | 2016-03-23 | 河南平高电气股份有限公司 | Hydraulic operation mechanism and motor oil pump unit thereof |
| CN105465586A (en) * | 2016-01-08 | 2016-04-06 | 深圳市润盈科技有限公司 | Electric grease pump |
| CN106222903A (en) * | 2016-09-08 | 2016-12-14 | 苏州市众禾缝纫科技有限公司 | A kind of sewing machine directly drive plunger oil pump |
| CN113431771A (en) * | 2021-06-22 | 2021-09-24 | 无锡市晟瑞机械电子有限公司 | Radial plunger pump |
-
2009
- 2009-08-10 CN CN2009203076740U patent/CN201496222U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671356A (en) * | 2013-12-31 | 2014-03-26 | 常州国源离合器有限公司 | Environment-friendly water medium hydraulic cylinder tube |
| CN105422410A (en) * | 2015-12-03 | 2016-03-23 | 河南平高电气股份有限公司 | Hydraulic operation mechanism and motor oil pump unit thereof |
| CN105422410B (en) * | 2015-12-03 | 2018-11-27 | 河南平高电气股份有限公司 | A kind of hydraulic actuating mechanism and its motor pump unit |
| CN105465586A (en) * | 2016-01-08 | 2016-04-06 | 深圳市润盈科技有限公司 | Electric grease pump |
| CN106222903A (en) * | 2016-09-08 | 2016-12-14 | 苏州市众禾缝纫科技有限公司 | A kind of sewing machine directly drive plunger oil pump |
| CN113431771A (en) * | 2021-06-22 | 2021-09-24 | 无锡市晟瑞机械电子有限公司 | Radial plunger pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20140810 |
|
| EXPY | Termination of patent right or utility model |