CN201496219U - Pneumatic plunger pump - Google Patents
Pneumatic plunger pump Download PDFInfo
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- CN201496219U CN201496219U CN2009203077029U CN200920307702U CN201496219U CN 201496219 U CN201496219 U CN 201496219U CN 2009203077029 U CN2009203077029 U CN 2009203077029U CN 200920307702 U CN200920307702 U CN 200920307702U CN 201496219 U CN201496219 U CN 201496219U
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Abstract
The utility model relates to a pneumatic plunger pump. The utility model overcomes the defects of the prior art that the pump is only provided with an overflow value without relief valves, so certain pressure is easily formed at the part of an oil discharge outlet, which brings difficulty for next oil discharge operation. The plunger pump comprises a plunger cylinder and a cylinder which are mutually connected. A piston ejector rod in the cylinder is connected with a piston in the plunger cylinder. The oil suction hole of the plunger cylinder is connected with an oil tank, a plunger cylinder body is fixed at the end of the oil tank, and a plunger is arranged in the plunger cavity of the plunger cylinder body. An oil discharge pipe communicated with an oil outlet hole and the plunger cavity is arranged in the plunger cylinder body. The oil suction hole is arranged on the inner wall of the plunger cavity. An integral pressure relief check valve is fixed at the connecting part of the plunger cavity and the oil discharge pipe. The integral pressure relief check valve is in an integral valve consisting of a check valve and a pressure relief valve. An overflow valve communicated with the oil discharge pipe and the oil tank is also arranged on the plunger cylinder body. One integral pressure relief check valve is fixed at the connecting part of the plunger cavity and the oil discharge pipe, and one overflow valve is connected with the oil discharge pipe, so oil can be overflowed from the overflow valve for protecting the hydraulic system when the pressure at the oil outlet hole is too large. Pressure in the oil channel can be quickly released by the pressure relief valve when the oil pump stops working, so a quantitative distributor in the oil channel system can normally work.
Description
Technical field
The utility model relates to a kind of hydraulic element, especially a kind of air piston pump.
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, valve upper cone face 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, guarantee the plunger pump proper functioning.
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 oiling one-way valve, oil-storing barrel, the Normally closed type two-position three way air operated reversing valve and the pump housing that is attached thereto, be provided with cylinder cap in the pump housing, cylinder barrel, piston, plunger, plunger hole, the oil extraction one-way valve, oil sucting one-way valve, valve body, pressure regulator valve, oil inlet hole, spill port, the safety overflow valve in draining hole, this oil feed pump internal structure complexity, assembling and processing are all cumbersome, safety overflow valve is set, when oil drainage hole is closed, because the existence of oil extraction one-way valve, hydraulic oil flows back to oil-storing barrel from safety overflow valve, but safety overflow valve need be set safe oil pressure relief, therefore the oil drain out place is in certain pressure all the time, if be connected to quantitative distributor, then the pressure of Cun Zaiing can influence the proper functioning of quantitative distributor, need in a lubrication interval oil pressure in the pipeline be unloaded only for guaranteeing the quantitative distributor proper functioning.
Summary of the invention
The utility model has solved does not have pressure-relief valve to have only relief valve in the prior art, form certain pressure at the oil drain out place easily, cause the shortcoming of resistance for next oil extraction, provide a kind of in conjunction with relief valve and pressure-relief valve, can be with the oil drain out off-load, guarantee that next oil extraction carries out smoothly.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of air piston pump, comprise interconnective plunger case and cylinder, piston mandril in the cylinder links to each other with the plunger in the plunger case, the oil-sucking hole of plunger case is connected to oil-storing barrel, the oil-storing barrel end is fixed with plunger cylinder, plunger is arranged in the plunger cavity of plunger cylinder, be provided with oil outlet tube in the plunger cylinder and be communicated with oil outlet and plunger cavity, the plunger cavity inwall offers oil-sucking hole, wherein, the joint of plunger cavity and flowline is fixed with unidirectional release one valve, unidirectional release one valve is the integrative-structure that is become with relief valve combination by one-way valve, also is provided with the relief valve that is communicated with flowline and oil-storing barrel on the plunger cylinder.Cylinder charge and exhaust, piston mandril moves up and down, and promotes plunger and moves up and down, cylinder charge moves on the plunger, discharges the air of plunger cavity, the cylinder exhaust, piston mandril is descending, and plunger is descending, produce negative pressure in the plunger cavity, oil-sucking hole sucks lubricant oil in oil-storing barrel, cylinder charge, move on the piston mandril, move on the plunger, the unidirectional conducting of unidirectional release one valve, lubricant oil is discharged from oil outlet tube, finishes an oiling; Repeat said process and can realize continuous oil supply.
As preferably, plunger is a cylindrical structural, the centre is an inner chamber, inner chamber one end opening, the other end sealing of inner chamber is placed with quantitative bar in the inner chamber, be placed with piston spring in the plunger cavity, one end of piston spring is nested on the unidirectional release one valve, and the other end of piston spring is put in the inner chamber, and quantitatively bar is in piston spring.Be placed with quantitative bar in the plunger cavity, quantitatively bar is used for controlling effective oil extraction stroke of plunger, changes effective oil extraction stroke that quantitative bar can pilot plunger, with the lubricant oil output volume that needing to obtain, realizes that every stroke volume of plunger pump is adjustable.
As preferably, be placed with cover in the plunger cavity and trap, upward separate by seal ring between overlapping and trapping, the upper-end surface of last cover contacts with unidirectional release one valve, the length of trapping is less than the length of plunger, plunger and last cover and trap and be that Spielpassung, plunger and seal ring are interference fit.Plunger moves up and down in plunger cavity, is filled with lubricant oil in the plunger cavity, and the Spielpassung between plunger and the upper and lower cover can guarantee that plunger slides up and down smoothly, and the seal ring interference fit can prevent that lubricant oil is in cylinder.
As preferably, the end face of plunger cylinder is fixed with cylinder cap, unidirectional release one valve is fixed on the plunger cavity opening portion by cylinder cap, the conducting direction of one-way valve is to the oil outlet tube conducting from plunger cavity, the conducting direction of pressure-relief valve be from oil outlet tube to the plunger cavity conducting, be formed with the Sheng oil pocket between cylinder cap and the unidirectional release one valve, leave the gap between the end face of cylinder cap and plunger cylinder, oil pocket and oil outlet tube are contained in the gap conducting, and the inlet of oil pocket and relief valve is contained in gap also conducting.Oil outlet opens wide, move on the plunger, one-way valve opens, lubricant oil enters into oil outlet tube through the gap, and export from oil outlet, unnecessary lubricant oil enters relief valve by the gap, comes back to oil-storing barrel, if oil outlet is closed, then containing oil pocket pressure raises, relief valve is opened, and makes that containing oil pocket pressure descends, can the work of conducting one-way valve when next oil outlet is opened.
As preferably, unidirectional release one valve comprises valve body and spool, valve body is the T font and comprises vertical part and transverse part, the vertical part is cylindrical, be provided with the oil duct that connects valve body in the vertical part, transverse part is a planar, transverse part is provided with the oil duct that connects transverse part, two oil ducts are parallel to each other and are not connected in valve body, direction opposite with the vertical part on the transverse part is extended with attachment post, and the oil duct in the vertical part connects attachment post, is equipped with the pressing plate that can slide up and down on the attachment post, the end card of attachment post has the opening jump ring, be placed with volute spring between pressing plate and the opening jump ring, when valve ball was placed on the interior valve port of transverse part oil duct, pressing plate was pushed down valve ball, withstand with spring when valve ball is placed into valve port in the oil duct of vertical part, the other end of spring withstands the plug place that is fixed on oil duct end, vertical part.Be placed with valve ball in the transverse part oil duct, the pressing plate that valve ball is connected on the post is pushed down, pressing plate is fixed by being nested with the opening jump ring that is fixed on the attachment post at the volute spring box on the attachment post, apply unidirectional conducting power by volute spring to valve ball, valve ball in the oil duct of vertical part is connected by spring and the plug by the oil duct end withstands spring, apply to valve ball by spring and to unload pressure pressure, empty to prevent pipeline finish stream.
As preferably, the connection part of cylinder and plunger case is fixed with cylinder head, plunger cylinder is fixed on the cylinder head, have through hole, an end of piston mandril to penetrate in the through hole in the middle of the cylinder head and contact with plunger end, the other end of piston mandril is fixed with piston, be equipped with piston spring on the piston mandril, piston spring one end withstands cylinder head, and the piston spring the other end withstands piston, and piston is divided into cylinder compression chamber and the inflatable chamber that does not communicate.The inflatable chamber inflation promotes piston and compresses compression chamber, the piston band piston mandril and is promoted plunger, and the lubricant oil in the plunger extruding plunger cavity flows out to oil outlet tube from one-way valve, discharges the gas in the inflatable chamber, under the effect of piston spring, piston is pushed and enlarges the solvent of compression chamber, and piston mandril is descending, in the effect of piston spring, plunger is descending, increased the volume of plunger cavity, simultaneously from the oil-sucking hole oil suction, so circulation realizes auto-supply; Cylinder action is relatively sensitiveer, can moment produce fast speeds when inflation, therefore also can promote plunger motion fast, and piston spring can play buffering when piston mandril move, can reduce to move the noise of generation, makes motion more steady simultaneously.
As preferably, the bottom of plunger is the spherical shape of sealing, the contacted upper end of piston mandril and plunger is the taper of indent, the diameter of plunger is greater than the diameter of cylinder head intermediate throughholes, piston mandril and through hole are Spielpassung, when compression chamber expanded maximum maximum volume to, the piston mandril upper end was inserted into all the time in the through hole and with the spherical shape closed end of plunger and contacts.Piston mandril is inserted in the through hole all the time, the internal taper hole of piston mandril contacts with the spherical shape closed end of plunger, when piston mandril promotion plunger moves, through hole plays the effect of guiding, make piston mandril be in the straight line motion, guarantee that plunger is on the center line of plunger cavity all the time, off-centre can not occur, prevent that the plunger clamping stagnation from guaranteeing that in plunger cavity plunger slides smoothly.
As preferably, the end of cylinder is fixed with two-position three way magnetic valve and outlet valve, and two-position three way magnetic valve is connected to suction tude, and two-position three way magnetic valve communicates with the inflatable chamber of cylinder by joint.Cylinder comes Control work by two-position three way magnetic valve, realizes many usefulness of cylinder charge and exhaust by two-position three way magnetic valve, responds soon, sensitive, and rate of fault is low.
As preferably, be provided with filter screen in the oil-storing barrel, filter screen is divided into two-part with oil-storing barrel, and the oil-storing barrel bottom communicates with the oil-sucking hole of plunger case, and top communicates with the oil drain out of relief valve.The lubricant oil of discharging from relief valve reenters oil-storing barrel, and this moment, the oil through a series of pipelines contained some foreign matters or bubble, therefore enter oil-sucking hole oil require filter, the oil ratio by filter screen is cleaning, the protection hydraulic system.
The beneficial effects of the utility model are: be connected a unidirectional release one valve with the oil outlet tube place at plunger cavity, the oil outlet tube place also is connected to relief valve, under the excessive situation of oil outlet pressure, and can be from relief valve overflow protection hydraulic system; When oil pump quits work, then can carry out fast pressure relief to oil circuit, make the quantitative distributor energy proper functioning in the oil-way system by pressure-relief valve.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model;
Fig. 2 is the structural representation of a kind of unidirectional release one valve of the utility model;
Among the figure: 1, oil-storing barrel, 2, the gap, 3, contain oil pocket, 4, filter screen, 5, oil outlet tube, 6, oil-sucking hole, 7, oil outlet, 8, quantitative bar, 9, exhaust port, 10, cylinder head, 11, piston mandril, 12, air inlet, 13, outlet valve, 14, exhaust, 15, two-position three way magnetic valve, 16, inflatable chamber, 17, piston, 18, cylinder, 19, compression chamber, 20, piston spring, 21, plunger, 22, trap 23, seal ring, 24, last cover, 25, piston spring, 26, plunger cavity, 27, unidirectional release one valve, 28, relief valve, 29, cylinder cap, 30, plunger case, 271, transverse part, 272, pressing plate, 273, the opening jump ring, 274, attachment post, 275, volute spring, 276, valve ball, 277, valve port, 278, the transverse part oil duct, 2710, spring, 2711, plug, 2712, the vertical part oil duct, 2713, the vertical part.
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 air piston pump (referring to accompanying drawing 1), comprise interconnective plunger case 30 and cylinder 18, the plunger case upper end is fixed with oil-storing barrel 1, the upper end of plunger case extend in the oil-storing barrel, be provided with piston 17 in the cylinder, piston mandril 11 and the piston spring 20 that is nested with on piston mandril, the upper end of piston mandril is the taper of indent, the opening portion of cylinder is fixed with cylinder head 10, the lower end of plunger case is fixed on the cylinder head, the intermediate portion of cylinder head is provided with through hole, piston mandril extend in the through hole, cylinder head is withstood in the upper end of piston spring, piston is withstood in the lower end of piston spring, the side of cylinder head offers exhaust port 9, the lower end of cylinder is fixed with air input joint, air input joint is connected with suction valve and outlet valve 13, suction valve and outlet valve are by two-position three way magnetic valve 15 control air inlet 12 and exhausts 14, piston is separated into the compression chamber 19 on not connected top and the inflatable chamber 16 of bottom with cylinder, compression chamber communicates with exhaust port on the cylinder head, be provided with oil outlet tube 5 in the cylinder body of plunger case and be communicated with oil outlet 7 and plunger cavity 26, the joint of plunger cavity and flowline is fixed with unidirectional release one valve 27 (referring to accompanying drawing 2), unidirectional release one valve is the integrative-structure that is become with relief valve combination by one-way valve, also be provided with the relief valve 28 that is communicated with flowline and oil-storing barrel on the plunger cylinder, the plunger cavity inwall offers oil-sucking hole 6, be provided with plunger 21 in the plunger cavity, plunger is a cylindrical structural, the external diameter of plunger is greater than the diameter of cylinder head intermediate throughholes, the bottom of plunger is the spherical shape of sealing, the centre is an inner chamber, inner chamber one end opening, the other end sealing of inner chamber, be placed with quantitative bar 8 in the inner chamber, be placed with piston spring 25 in the plunger cavity, one end of piston spring is nested on the unidirectional release one valve, the other end of piston spring is put in the inner chamber, quantitatively bar is in piston spring, be placed with cover 24 in the plunger cavity and trap 22, upward separate by seal ring 23 between overlapping and trapping, the upper-end surface of last cover contacts with unidirectional release one valve, the length of trapping is less than the length of plunger, plunger and last cover and trap and be Spielpassung, plunger and seal ring are interference fit, the upper-end surface of plunger cylinder is fixed with cylinder cap 29, unidirectional release one valve is fixed on the plunger cavity opening portion by cylinder cap, the conducting direction of one-way valve is to the oil outlet tube conducting from plunger cavity, the conducting direction of pressure-relief valve is to the plunger cavity conducting from oil outlet tube, be formed with between cylinder cap and the unidirectional release one valve and contain oil pocket 3, leave gap 2 between the end face of cylinder cap and plunger cylinder, oil pocket and oil outlet tube are contained in the gap conducting, the inlet of oil pocket and relief valve is contained in gap also conducting, piston mandril in the cylinder links to each other with the plunger in the plunger case, piston mandril and through hole are Spielpassung, when compression chamber expanded maximum volume to, the piston mandril upper end was inserted into all the time in the through hole and with the spherical shape closed end of plunger and contacts.
Unidirectional release one valve comprises valve body and spool, valve body is the T font and comprises vertical part 2713 and transverse part 271, the vertical part is cylindrical, be provided with the vertical part oil duct 2712 that connects valve body in the vertical part, transverse part is a planar, transverse part is provided with the transverse part oil duct 278 that connects transverse part, two oil ducts are parallel to each other and are not connected in valve body, the direction opposite with the vertical part is extended with attachment post 274 on the transverse part, vertical part oil duct in the vertical part connects attachment post, be equipped with the pressing plate 272 that can slide up and down on the attachment post, the end card of attachment post has opening jump ring 273, is placed with volute spring 275 between pressing plate and the opening jump ring, when valve ball 276 is placed on the interior valve port 277 of transverse part oil duct, pressing plate is pushed down valve ball, withstands with spring 2710 when valve ball is placed into valve port in the oil duct of vertical part, and the other end of spring withstands plug 2711 places that are fixed on oil duct end, vertical part.
Be provided with filter screen 4 in the oil-storing barrel, filter screen is divided into two-part with oil-storing barrel, and the oil-storing barrel bottom communicates with the oil-sucking hole of plunger case, and top communicates with the oil drain out of relief valve.
INO, cylinder intake, it is up that the inflatable chamber expansion promotes cylinder piston, it is up that piston mandril promotes plunger, discharges the air in the plunger cavity, the action of two-position three way battery valve, the inflatable chamber exhaust, piston descends, and plunger descends simultaneously, make form negative pressure in the plunger cavity and by oil-sucking hole from the oil-storing barrel oil suction; The two-position three way magnetic valve action, inflatable chamber is inflated again, it is up that piston mandril promotes plunger, plunger is sealed the one-way valve that oil-sucking hole is opened unidirectional release one valve simultaneously, through gap, oil outlet tube from the oil outlet oil extraction, withstand unidirectional release one valve bottom up to quantitative rod end surface and stop up (till sealing oil-sucking hole from plunger and playing quantitative rod end surface and withstand one valve bottom, be the rated travel of plunger, the length of changing quantitative bar can obtain different discharge capacities); Lubricant pump carries out oil-absorbing process once more then, and this moment, the pressure-relief valve in the unidirectional release one valve was started working, and oil-way system is carried out fast pressure relief, makes the quantitative distributor in the oil-way system can proper functioning.In the greasing,, be back to oil drum, protection lubrication system safety from relief valve if overpressure in the oil circuit is then opened relief valve.
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 (9)
1. air piston pump, comprise interconnective plunger case (30) and cylinder (18), the interior plunger (21) of piston mandril (11) in the cylinder and plunger case links to each other, the oil-sucking hole of plunger (6) is connected to oil-storing barrel (1), the oil-storing barrel end is fixed with the cylinder body of plunger case, be provided with plunger cavity (26) in the plunger cylinder, plunger is arranged in the plunger cavity, be provided with the oil outlet tube (5) that is communicated with oil outlet (7) and plunger cavity in the plunger cylinder, the plunger cavity inwall offers oil-sucking hole, the joint that it is characterized in that plunger cavity and flowline is fixed with unidirectional release one valve (27), unidirectional release one valve is the integrative-structure that is become with relief valve combination by one-way valve, also is provided with the relief valve (28) that is communicated with flowline and oil-storing barrel on the plunger cylinder.
2. air piston pump according to claim 1, it is characterized in that plunger is a cylindrical structural, the centre is an inner chamber, inner chamber one end opening, the other end sealing of inner chamber is placed with quantitative bar (8) in the inner chamber, be placed with piston spring (25) in the plunger cavity, one end of piston spring is nested on the unidirectional release one valve, and the other end of piston spring is put in the inner chamber, and quantitatively bar is in piston spring.
3. air piston pump according to claim 1 and 2, it is characterized in that being placed with in the plunger cavity cover (24) and trap (22), upward separate by seal ring (23) between overlapping and trapping, the upper-end surface of last cover contacts with unidirectional release one valve, the length of trapping is less than the length of plunger, plunger and last cover and trap and be that Spielpassung, plunger and seal ring are interference fit.
4. air piston pump according to claim 1, the end face that it is characterized in that plunger cylinder is fixed with cylinder cap (29), unidirectional release one valve is fixed on the plunger cavity opening portion by cylinder cap, the conducting direction of one-way valve is to the oil outlet tube conducting from plunger cavity, the conducting direction of pressure-relief valve is to the plunger cavity conducting from oil outlet tube, be formed with between cylinder cap and the unidirectional release one valve and contain oil pocket (3), leave gap (2) between the end face of cylinder cap and plunger cylinder, oil pocket and oil outlet tube are contained in the gap conducting, and the inlet of oil pocket and relief valve and pressure-relief valve is contained in gap also conducting.
5. according to claim 1 or 2 or 4 described air piston pumps, it is characterized in that unidirectional release one valve comprises valve body and spool, valve body is the T font and comprises vertical part (2713) and transverse part (271), the vertical part is cylindrical, be provided with the oil duct that connects valve body in the vertical part, transverse part is a planar, transverse part is provided with the oil duct that connects transverse part, two oil ducts are parallel to each other and are not connected in valve body, the direction opposite with the vertical part is extended with attachment post (274) on the transverse part, oil duct in the vertical part connects attachment post, be equipped with the pressing plate that can slide up and down (272) on the attachment post, the end card of attachment post has opening jump ring (273), be placed with volute spring (275) between pressing plate and the opening jump ring, when valve ball (276) was placed on the interior valve port of transverse part oil duct, pressing plate was pushed down valve ball, withstand with spring (2710) when valve ball is placed into valve port in the oil duct of vertical part, the other end of spring withstands the plug (2711) that is fixed on oil duct end, vertical part and locates.
6. air piston pump according to claim 1, the connection part that it is characterized in that cylinder and plunger case is fixed with cylinder head (10), plunger cylinder is fixed on the cylinder head, through hole is arranged in the middle of the cylinder head, one end of piston mandril penetrates in the through hole and contacts with plunger end, the other end of piston mandril is fixed with piston (17), be equipped with piston spring (20) on the piston mandril, piston spring one end withstands cylinder head, the piston spring the other end withstands piston, and piston is divided into cylinder compression chamber (19) and the inflatable chamber (16) that does not communicate.
7. according to claim 1 or 2 or 6 described air piston pumps, it is characterized in that the spherical shape of the bottom of plunger for sealing, the contacted upper end of piston mandril and plunger is the taper of indent, the diameter of plunger is greater than the diameter of cylinder head intermediate throughholes, piston mandril and through hole are Spielpassung, when compression chamber expanded maximum maximum volume to, the piston mandril upper end was inserted into all the time in the through hole and with the spherical shape closed end of plunger and contacts.
8. according to claim 1 or 6 described air piston pumps, the end that it is characterized in that cylinder is fixed with two-position three way magnetic valve (15) and outlet valve (13), two-position three way magnetic valve is connected to suction tude, and two-position three way magnetic valve communicates with the inflatable chamber of cylinder by joint.
9. air piston pump according to claim 1 is characterized in that being provided with in the oil-storing barrel filter screen (4), and filter screen is divided into two-part with oil-storing barrel, and the oil-storing barrel bottom communicates with the oil-sucking hole of plunger case, and top communicates with the oil drain out of relief valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203077029U CN201496219U (en) | 2009-08-10 | 2009-08-10 | Pneumatic plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203077029U CN201496219U (en) | 2009-08-10 | 2009-08-10 | Pneumatic plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201496219U true CN201496219U (en) | 2010-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203077029U Expired - Fee Related CN201496219U (en) | 2009-08-10 | 2009-08-10 | Pneumatic plunger pump |
Country Status (1)
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| CN (1) | CN201496219U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605231A (en) * | 2016-03-22 | 2016-05-25 | 叶军 | Pneumatic cut-off valve |
| CN106439465A (en) * | 2016-11-18 | 2017-02-22 | 上海金兆节能科技有限公司 | Precise pneumatic control device of micro lubricating system |
| CN107454928A (en) * | 2017-04-20 | 2017-12-08 | 惠州市科特测控工程有限公司 | A kind of electro-hydraulic servo power cylinder |
| CN111941142A (en) * | 2020-08-14 | 2020-11-17 | 青岛理工大学 | Micro-lubricating continuous liquid supply system and method |
| CN113008446A (en) * | 2019-12-20 | 2021-06-22 | 周文三 | Air compressor with pressure gauge |
| CN114542955A (en) * | 2022-02-28 | 2022-05-27 | 华能平凉发电有限责任公司 | Oxygen bomb oxygenating and pressure relieving device |
| CN117006038A (en) * | 2023-08-21 | 2023-11-07 | 中南大学 | Double-oil-distribution double-oil-outlet self-priming plunger pump |
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2009
- 2009-08-10 CN CN2009203077029U patent/CN201496219U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605231A (en) * | 2016-03-22 | 2016-05-25 | 叶军 | Pneumatic cut-off valve |
| CN106439465A (en) * | 2016-11-18 | 2017-02-22 | 上海金兆节能科技有限公司 | Precise pneumatic control device of micro lubricating system |
| CN106439465B (en) * | 2016-11-18 | 2018-03-13 | 上海金兆节能科技有限公司 | Lubricating system with trace amount precise pneumatic control device |
| CN107454928A (en) * | 2017-04-20 | 2017-12-08 | 惠州市科特测控工程有限公司 | A kind of electro-hydraulic servo power cylinder |
| CN107454928B (en) * | 2017-04-20 | 2019-12-17 | 惠州市科特测控工程有限公司 | Electro-hydraulic servo boosting cylinder |
| CN113008446A (en) * | 2019-12-20 | 2021-06-22 | 周文三 | Air compressor with pressure gauge |
| US11609138B2 (en) | 2019-12-20 | 2023-03-21 | Unik World Industrial Co., Ltd. | Air compressor having pressure gauge |
| CN111941142A (en) * | 2020-08-14 | 2020-11-17 | 青岛理工大学 | Micro-lubricating continuous liquid supply system and method |
| CN114542955A (en) * | 2022-02-28 | 2022-05-27 | 华能平凉发电有限责任公司 | Oxygen bomb oxygenating and pressure relieving device |
| CN117006038A (en) * | 2023-08-21 | 2023-11-07 | 中南大学 | Double-oil-distribution double-oil-outlet self-priming plunger pump |
| CN117006038B (en) * | 2023-08-21 | 2024-03-12 | 中南大学 | Double-oil-distribution double-oil-outlet self-priming plunger pump |
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