CN107542637A - A kind of hand-operated foot-pedal dual-purpose hydraulic pump - Google Patents
A kind of hand-operated foot-pedal dual-purpose hydraulic pump Download PDFInfo
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- CN107542637A CN107542637A CN201710986234.1A CN201710986234A CN107542637A CN 107542637 A CN107542637 A CN 107542637A CN 201710986234 A CN201710986234 A CN 201710986234A CN 107542637 A CN107542637 A CN 107542637A
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Abstract
The present invention relates to hydraulic pressure pump technical field, refer in particular to a kind of hand-operated foot-pedal dual-purpose hydraulic pump, including the pump housing, driving part and support base, it is rotatably mounted above the pump housing to have the driving part, the support base is provided with below the pump housing, the oil storing tube for storing fluid is connected with the pump housing, oil storing tube is provided with oil piping system with pump body；The oil storing tube outer end is provided with pressure release pedal；The pump housing is circumscribed with oil connection and pressure gauge component, and the fluid flows into from the inlet valve, is flowed out after the working oil chamber and oil duct of pump body from the oil-out of the oil connection；It is provided with the driving part and is available for pulling or connecting rod that pin is stepped on.Two plungers are provided with the working oil chamber of pump body of the present invention, belongs to a kind of twin columns plug structure for singly entering and singly going out, is conveniently adjusted pressure size, releasing pressure automatically can be realized, and operator not only can hold but also can have been stepped on pin when in use, rapid operation is time saving, improves operating efficiency.
Description
Technical field
The present invention relates to hydraulic pressure pump technical field, refers in particular to a kind of hand-operated foot-pedal dual-purpose hydraulic pump.
Background technology
Hydraulic pump as a kind of dynamical element of hydraulic system, is driven by engine or motor, by fluid from
Sucked in fuel tank, then form pressure oil and be then exhausted from, be operated until delivering to executive component.In general hydraulic pump is to use
Hand is exerted a force, back and forth pulled up and under the action that pushes away, the depression bar and drainage device of this class formation be all with hand go pressure or
Draining is carried out with hand, it is relatively elaborate.And traditional hydraulic pump pressure release mode does not possess self-relieving work to force pressure release
Make, the scope of application compares limitation.
Chinese invention patent notification number：203051017U, discloses a kind of hand-operated foot-pedal hydraulic pump, including bottom plate, is located at
The pump housing on bottom plate, the foot-operated depression bar being articulated with the pump housing, the pump housing are provided with big piston rod, and stepping on foot-operated depression bar can be with
The oil pressure conveying that big piston rod realizes high pressure and low pressure is contacted, it is convenient and strength-saving, still, understood due to combining its accompanying drawing, ride pressure
What the reset of bar was only leaned on is the spring in big piston rod, and so foot-operated depression bar is anti-due to itself existing weight and long-time
Multiple motion, foot-operated depression bar can be caused to reset slow or reset failure, so when using foot-operated dynamic foot-operated depression bar, ride pressure
Bar resets can cause operation inconvenience not in time.
Chinese invention patent notification number：205401020U, disclose a kind of hand-operated foot-pedal dual-purpose hydraulic pump：Including bottom plate,
The pump housing on bottom plate, one end of the pump housing are provided with the piston rod of transfer tube body running, are located at piston rod on the pump housing
One end be hinged with pedal frame, the pedal frame can contradict piston rod and make its stretching motion when rotating, and be set on the pedal frame
There are pedal position and the clamping sleeve positioned at pedal position upside and for compressing instep.The invention mainly provides a kind of manual
And foot-operated structure, and multiple foot-driven levers are provided with its pedal frame, it is complicated, while in its specification also not
The pressure release mode of hydraulic pump is referred to, the scope of application is more limited to.
The content of the invention
The invention aims to solve the above problems, releasing pressure automatically can be carried out by devising one kind, and control it
Carry out pressurize during releasing pressure automatically, operating efficiency is high, can the manual and can hydraulic pump being stepped on to control with pin.
The object of the present invention is achieved like this：
A kind of hand-operated foot-pedal dual-purpose hydraulic pump, including the pump housing, driving part and support base, the pump housing top are rotatable
The driving part is installed, the support base is provided with below the pump housing, the storage for storing fluid is connected with the pump housing
Oil pipe, oil storing tube are provided with oil piping system with pump body；
The oil piping system includes inlet valve, delivery valve, safety valve and relief valve, the inlet valve, safety valve and
Relief valve is located inside the oil storing tube, and the delivery valve is located at the pump body；
The pump body offers working oil chamber and some oil ducts, the inlet valve, delivery valve, safety valve and
Relief valve is connected by some oil ducts；
The oil storing tube outer end is provided with pressure release pedal；The pump housing is circumscribed with oil connection and pressure gauge component, described
Fluid flows into from the inlet valve, from the oil-out of the oil connection after the working oil chamber and oil duct of pump body
Outflow；
It is provided with the driving part and is available for pulling or connecting rod that pin is stepped on.
Be provided with working chamber one and working chamber two in the working oil chamber, working chamber one by oil duct one connect it is described enter
Fuel tap, working chamber two-way oil channel two connect the delivery valve；Plunger one and plunger spring are installed in the working chamber one,
Plunger one is set in inside plunger spring, and piston is provided between plunger spring upper end and working oil cavity wall；The working chamber two
Plunger rod is inside installed, plunger rod upper end is extended the pump housing and is resisted against on the driving part.
The inlet valve includes the oil-feed valve body in the oil storing tube and the oil-feed in the pump housing is unidirectional
Valve, more than one fuel feed hole is offered in inlet valve body surfaces, inlet valve body interior offers oil input channel, oil input channel
Front end connects the in line check valve, in line check valve front end connection pump body oil duct；Fluid enters institute from the fuel feed hole
Oil input channel is stated, enters pump body through the in line check valve, is entered by oil duct in the working oil chamber.
Oil duct three is communicated with the oil duct two, safety valve described in oil duct tee joint and oil duct four, oil duct four connects described
Relief valve and oil duct five, oil duct five connect the oil connection and oil duct six, and oil duct six connects the pressure gauge component.
The relief valve includes pressure release check valve, valve rod and valve pocket, and pressure release check valve is located at valve rod the inner, outside valve rod
Extend the oil storing tube and be resisted against on the pressure release pedal in end；Valve pocket is set in stem outer circumference and is resisted against the safety valve
On.
The oil storing tube is internally provided with oil sac and pull bar, and fluid is filled in oil sac, and pull bar one end is plugged in the pump housing
Interior, the other end is fixed on oil storing tube through the oil sac.
Also include pressure regulation bar, pressure regulation bar is arranged in the oil storing tube through the pump housing.
The driving part includes handle one and handle two, and limited block, hand are connected between handle one and the front end of handle two
The connecting rod is connected between handle one and the rear end of handle two.
Extension spring is connected between the limited block and the support base.
Pump cover is provided with above the pump housing, the driving part is hinged on the pump cover.
The present invention is prominent and beneficial compared with prior art to be had the technical effect that：
1st, be provided with two plungers in the working oil chamber of pump body of the present invention, and respectively with inlet valve and delivery valve phase
It is logical, belong to a kind of twin columns plug structure for singly entering and singly going out, realize the same oil circuit of high-low pressure, be conveniently adjusted pressure size.
2nd, oil piping system is provided with the pump housing and oil storing tube of the invention, oil piping system includes inlet valve, delivery valve, peace
Full valve and relief valve, inlet valve, safety valve and relief valve are located inside oil storing tube, and delivery valve is located at the pump body；Respectively
Be connected between individual valve body by oil circuit so that hydraulic pump at work, when pressure reaches certain value in the pump housing, Neng Goujin
Row releasing pressure automatically；Meanwhile the present invention is additionally provided with pressure release pedal, pressure release pedal can manually be forced according to actual conditions
Pressure release, and there is pressure holding function, i.e. user when carrying out pressure release, will not complete pressure release, a part can be retained in the pump housing
Pressure, it is easy to task again, improves operating efficiency, securely and reliably, application is wider.
3rd, the driving part that uses of the present invention, is provided with bar linkage structure, and operator can not only hold but also can be with when in use
Pin is stepped on, and rapid operation is time saving, improves operating efficiency.
4th, the working oil chamber in the pump housing of the present invention is the oscilaltion that plunger rod is driven by driving part, changes work
Pressure in oil pocket, promote fluid to enter back into working oil chamber from inlet valve into oil duct one, then enter oil duct two from working oil chamber
Delivery valve and oil duct three are delivered to, it is simple in construction, it is easy to use, it is quick on the draw, enters fuel-displaced efficiency high.
Brief description of the drawings
Fig. 1 is the cross-sectional view one of the present invention.
Fig. 2 is partial enlarged drawing at Fig. 1 M.
Fig. 3 is the cross-sectional view two of the present invention.
Fig. 4 is the cross-sectional view three of the present invention.
Fig. 5 is Fig. 4 A-A to cross-sectional view.
Fig. 6 is Fig. 4 B-B direction cross-sectional view.
Fig. 7 is partial enlarged drawing at Fig. 6 N.
Fig. 8 is Fig. 4 C-C to cross-sectional view.
Fig. 9 is Fig. 4 D-D to cross-sectional view.
Figure 10 is the structural representation of inlet valve of the present invention.
Figure 11 is the structural representation of locking mechanism of the present invention.
Figure 12 is the structure diagram of the present invention.
Embodiment
With specific embodiment, the invention will be further described below in conjunction with the accompanying drawings, referring to Fig. 1-Figure 12：
A kind of hand-operated foot-pedal dual-purpose hydraulic pump, including the pump housing 1, driving part 2 and support base 3, can on the pump housing 1
The driving part 2 is rotatablely equipped with, the lower section of the pump housing 1 is provided with the support base 3, is connected with the pump housing 1 for storing
The oil storing tube 4 of fluid, oil storing tube 4 are internally provided with oil piping system with the pump housing 1；
The oil piping system includes inlet valve 51, delivery valve 52, safety valve 53 and relief valve 54, the inlet valve 51,
Safety valve 53 and relief valve 54 are located inside the oil storing tube 4, and the delivery valve 52 is located inside the pump housing 1；
Working oil chamber 11 and some oil ducts, the inlet valve 51, delivery valve 52, safety are offered inside the pump housing 1
Valve 53 and relief valve 54 are connected by some oil ducts；
The outer end of oil storing tube 4 is provided with pressure release pedal 6；The pump housing 1 is circumscribed with oil connection 7 and pressure gauge component
8, the fluid flows into from the inlet valve 51, is connect after working oil chamber 11 and oil duct inside the pump housing 1 from the oil pipe
First 7 oil-out 71 flows out；
It is provided with the driving part 2 and is available for pulling or connecting rod 21 that pin is stepped on.
Working chamber 1 and working chamber 2 112 are provided with the working oil chamber 11, working chamber 1 passes through oil duct one
The 91 connection inlet valves 51, working chamber 2 112 connect the delivery valve 52 by oil duct 2 92；In the working chamber 1
Plunger 12 and plunger spring 13 are installed, plunger 12 is set in inside plunger spring 13, and the one end of plunger spring 13 acts on plunger
On 12, the other end is fixedly installed on the lower end of working chamber one, is provided between the upper end of plunger spring 13 and the wall of working oil chamber 11 also living
Plug 14；Plunger rod 15 is installed, the pump housing 1 is extended against or close to institute in the upper end of plunger rod 15 in the working chamber 2 112
State on driving part 2, the lower end of plunger rod 15 extends to one end of the plunger 12, and the outside of plunger rod 15 is provided with plunger steel
Set 151, is provided between plunger rod 15 and plunger steel bushing 151 and between plunger steel bushing 151 and the inwall of working chamber 2 112
Sealing ring, strengthen the sealing between plunger rod and the pump housing.
The inlet valve 51 includes the oil-feed valve body 512 being located in the oil storing tube 4 and in the pump housing 1
In line check valve 511, more than one fuel feed hole 513 is offered on the surface of oil-feed valve body 512, is offered in the present embodiment
Three fuel feed holes, oil input channel 514 is offered inside oil-feed valve body 512, and the front end of oil input channel 514 connects the in line check valve
511, the front end of the in line check valve 511 connection internal galleries of the pump housing 1；Fluid enters the oil input channel 514 from the fuel feed hole 513,
Enter through the in line check valve 511 inside the pump housing 1, entered by oil duct in the working oil chamber 11.
Oil duct 3 93 is communicated with the oil duct 2 92, oil duct 3 93 connects the safety valve 53 and oil duct 4 94, oil duct
The 4 94 connection relief valves 54 and oil duct 5 95, oil duct 5 95 connect the oil connection 7 and oil duct 6 96, oil duct 6 96
Connect the pressure gauge component 8.It is provided between the oil duct 2 92, oil duct 3 93, oil duct 4 94, oil duct 5 95 and the pump housing 1
Plug 97, is provided with sealing ring between plug 97 and the pump housing 1, plug 97 is fastened on the pump housing 1 by screw.
Oil circuit flow direction in oil piping system：As shown in figure 1, fluid from oil storing tube 4 by being opened on oil-feed valve body 512
If fuel feed hole 513 enter inlet valve 51 inside, and by oil duct 1 enter working oil chamber 11 in；As shown in figure 5, work
Fluid in oil pocket flows out to delivery valve 52 from oil duct 2 92；Oil can be delivered to from oil duct 3 93 by the fluid of delivery valve 52
In road 4 94；As shown in fig. 6, oil duct 4 94 connects with oil duct 5 95, fluid flows to oil duct five from oil duct four；As shown in figure 8,
Fluid has part fluid to be flowed away from oil duct six, oil-pressure direct at that time is shown on pressure gauge component through oil channel five；It is another
Part fluid finally flows out from the oil-out 71 of the oil connection 7 connected with oil duct 5 95.When in working oil chamber 11
When pressure reaches certain value, fluid can enter in safety valve 53 from oil duct 3 93.
Safety valve 53 includes safety valve body 535, and a conical valve element 531 is provided with safety valve body 535, safety
Valve rod 532, valve core spring 533 and sliding sleeve 534, the one end of safety lever 532 pass safety valve body 535 and are set in safety valve spring
On seat 538, the other end is connected with valve element 531, sliding sleeve 534 is arranged with safety lever 532 and sliding sleeve 534 and the phase of valve element 531
Contact, valve core spring 533 are set in the periphery of safety lever 532, and the one end of valve core spring 533 is acted on spring base 538, another
End acts on sliding sleeve 534 and makes the top pressure of sliding sleeve 534 on valve element 531.The periphery of safety valve body 535 is provided with a safe valve pocket
536, it is provided with back-moving spring 537 between safe valve pocket 536 and the pump housing.When the pressure of pump body reaches critical value, fluid
Valve element 531 can be pushed up and opened, so as to open oil discharge passage, flowed into by valve body of safety valve in oil storing tube, reach self-relieving mesh
's.
The relief valve 54 includes pressure relief valve body 544, and the surface of pressure relief valve body 544 offers relief valve oil inlet 545, let out
Pressure release check valve 541, pressure relief valve stem 542 and pressure release valve pocket 543 are provided with pressure valve body 544, pressure release check valve 541 is located at
Pressure relief valve stem 542 is inner, and the oil storing tube 4 is extended against or close to the pressure release pedal 6 in the outer end of pressure relief valve stem 542；Pressure release
Valve pocket 543 is set in the periphery of pressure relief valve stem 542 and is resisted against on the safe valve pocket 536 of the safety valve 53.When being forced
During pressure release, when trampling the pressure release pedal 6, pressure relief valve stem 542 moves inward under the drive of pressure release pedal 6, opens pressure release list
To valve 541, fluid enters inside pressure relief valve body 544 from pump body oil duct 4 94, enters oil sac from relief valve oil-out 545
In 41, reach the purpose for forcing pressure release；Meanwhile pressure relief valve stem 542 can drive the movement of pressure release valve pocket 543 in movement, let out
Pressure valve covers 543 upper ends and extends a feeler being against on safe valve pocket 536, drive of the safe valve pocket 536 in pressure release valve pocket 543
Under can also move.
In above-mentioned pressure leak process, the pressure release pedal 6 is pressed, you can stop pressure release, play system pressure holding function, just
It is operated in being again started up device；Pressure release pedal 6 described in long-press, the purpose of complete pressure release can be reached.
The oil storing tube 4 is internally provided with oil sac 41 and pull bar 42, and fluid is filled in oil sac 41, and the front end of oil sac 41 is fixed
On the pump housing, the rear end of oil sac 41 is provided with rear end cap；The one end of pull bar 42 is plugged in the pump housing 1, and the other end passes through
The oil sac is worn to be fixed on oil storing tube 4；The valve rod 542 runs through rear end cap, and is sealed by sealing ring.
Present invention additionally comprises pressure regulation bar 10, pressure regulation bar 10 is arranged in the oil storing tube 4 through the pump housing 1, pressure regulation bar
Several sealing rings 20 are installed, the one end of pressure regulation bar 10 is connected on the pump housing by trim 101, another between 10 and the pump housing
Extend the pump housing and be located in the oil storing tube 4 in end；Pressure regulation bar 10 can be used for the internal pressure of the regulation pump housing.
The top of the pump housing 1 is provided with pump cover 16, and the driving part 2 is hinged on the pump cover 16.The drive division
Part 2 includes handle 1 and handle 2 23, and limited block 24, handle 1 are connected between handle 1 and the front end of handle 2 23
The middle part of handle 2 23 is provided with taper knob 221, the connecting rod 21 is connected between handle 1 and the rear end of handle 2 23.Hand
Locking mechanism is additionally provided between handle 1 and handle 2 23, as shown in figure 11, locking mechanism include stop pin 26, hook plate 27,
Stop collar 28 and torsion spring 29, the upper end of hook plate 27 are connected on stop pin 26, and lower end forms a snap fit 271, and snap fit 271 hooks
On the screw fastening 161 of the pump cover 16, the middle part of hook plate 27 offers mounting hole, and the stop collar is provided with mounting hole
28, torsion spring 29 is set in the outside of stop collar 28, and the one end of torsion spring 29 is set on hook plate 27, and the other end is ridden upon on stop pin 26.
Rotation lock rationed marketing 26 and upper handle, snap fit 271 can be promoted to leave pump cover 16 so as to which the unblock of driving part 2 be operated；Rotation
Twist lock rationed marketing 26 simultaneously presses lower handle, can promote on the screw fastening 161 that snap fit 271 is stuck on pump cover 16, so as to by driving part 2
It is locked on the pump housing 1.
Extension spring 25 is also associated between the limited block 24 and the support base 3, is easy to driving part to reset, energy
Operator is enough set to save strength, it is easy to operation.
Above-described embodiment is only presently preferred embodiments of the present invention, is not limited the scope of the invention according to this, therefore：It is all
The equivalence changes that structure under this invention, shape, principle are done, all should be covered by within protection scope of the present invention.
Claims (10)
1. a kind of hand-operated foot-pedal dual-purpose hydraulic pump, including the pump housing, driving part and support base, it is characterised in that：On the pump housing
The driving part can be rotatablely equipped with, the support base is provided with below the pump housing, is connected with the pump housing for storing
The oil storing tube of fluid, oil storing tube are provided with oil piping system with pump body；
The oil piping system includes inlet valve, delivery valve, safety valve and relief valve, and the pump body offers working oil chamber
With some oil ducts, the inlet valve, delivery valve, safety valve and relief valve are connected by some oil ducts；
The oil storing tube outer end is provided with pressure release pedal；The pump housing is circumscribed with oil connection and pressure gauge component；The driving
It is provided with part and is available for pulling or connecting rod that pin is stepped on.
A kind of 2. hand-operated foot-pedal dual-purpose hydraulic pump according to claim 1, it is characterised in that：The driving part includes two
Individual handle, locking mechanism is provided between two handles, handle front end is connected with limited block, and handle rear end is connected with the company
Bar.
A kind of 3. hand-operated foot-pedal dual-purpose hydraulic pump according to claim 1 or 2, it is characterised in that：In the working oil chamber
Working chamber one and working chamber two are provided with, working chamber one connects the inlet valve, working chamber two-way oil channel two by oil duct one
Connect the delivery valve；Plunger and plunger spring be installed in the working chamber one, plunger spring upper end and working oil cavity wall it
Between be provided with piston；Plunger rod is installed, the pump housing is extended against or close to institute in plunger rod upper end in the working chamber two
State on driving part, plunger rod lower end is against one end of the plunger.
A kind of 4. hand-operated foot-pedal dual-purpose hydraulic pump according to claim 3, it is characterised in that：The inlet valve includes oil-feed
Valve body and in line check valve, more than one fuel feed hole are offered in inlet valve body surfaces, inlet valve body interior opens up
There is oil input channel, oil input channel front end connects the in line check valve, and in line check valve front end connects the oil duct one.
A kind of 5. hand-operated foot-pedal dual-purpose hydraulic pump according to claim 3 or 4, it is characterised in that：Connect on the oil duct two
Oil duct three is connected with, safety valve described in oil duct tee joint and oil duct four, oil duct four connect the relief valve and oil duct five, and oil duct five connects
Lead to the oil connection and oil duct six, oil duct six connects the pressure gauge component.
A kind of 6. hand-operated foot-pedal dual-purpose hydraulic pump according to claim 5, it is characterised in that：The relief valve includes pressure release
Check valve, pressure relief valve stem and pressure release valve pocket, pressure release check valve are located at pressure relief valve stem the inner, and pressure relief valve stem outer end is extended described
Oil storing tube against or close to the pressure release pedal；Pressure release valve pocket is set in pressure relief valve stem periphery and is resisted against on the safety valve.
A kind of 7. hand-operated foot-pedal dual-purpose hydraulic pump according to claim 1 or 6, it is characterised in that：Inside the oil storing tube
Oil sac and pull bar are provided with, fluid is filled in oil sac, pull bar one end is plugged in the pump housing, and the other end is consolidated through the oil sac
It is scheduled on oil storing tube.
A kind of 8. hand-operated foot-pedal dual-purpose hydraulic pump according to claim 1, it is characterised in that：Also include pressure regulation bar, pressure regulation
Bar is arranged in the oil storing tube through the pump housing.
A kind of 9. hand-operated foot-pedal dual-purpose hydraulic pump according to claim 2, it is characterised in that：The limited block and the branch
Extension spring is connected between support seat.
A kind of 10. hand-operated foot-pedal dual-purpose hydraulic pump according to claim 2 or 9, it is characterised in that：Set above the pump housing
Pump cover is equipped with, the driving part is hinged on the pump cover, and the locking mechanism is connected between pump cover and driving part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710986234.1A CN107542637B (en) | 2017-10-20 | 2017-10-20 | Manual and pedal dual-purpose hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710986234.1A CN107542637B (en) | 2017-10-20 | 2017-10-20 | Manual and pedal dual-purpose hydraulic pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107542637A true CN107542637A (en) | 2018-01-05 |
| CN107542637B CN107542637B (en) | 2023-07-04 |
Family
ID=60968082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710986234.1A Active CN107542637B (en) | 2017-10-20 | 2017-10-20 | Manual and pedal dual-purpose hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107542637B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110342421A (en) * | 2019-08-08 | 2019-10-18 | 台州市东鸿环保科技有限公司 | A kind of oil pump and method with fast lifting function |
| CN110878741A (en) * | 2019-11-20 | 2020-03-13 | 扬州润盈机械有限公司 | Novel adjustable manual pump |
| CN111271255A (en) * | 2020-03-03 | 2020-06-12 | 周明剑 | Air compressor for compressing gas and improving gas pressure |
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| CN205401020U (en) * | 2016-03-04 | 2016-07-27 | 北京北方科汇科技发展有限公司 | Manual pedal dual -purpose hydraulic pump |
| CN206274024U (en) * | 2016-11-22 | 2017-06-23 | 郭成城 | A kind of hydraulic pump |
| CN207750183U (en) * | 2017-10-20 | 2018-08-21 | 台州巨力工具有限公司 | A kind of hand-operated foot-pedal dual-purpose hydraulic pump |
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| JP3004925U (en) * | 1994-06-03 | 1994-12-06 | 茂雄 洪 | Manual and pneumatic hydraulic pump |
| CN201666237U (en) * | 2009-08-03 | 2010-12-08 | 江阴市江友气动元件厂 | Treadle type hydraulic pump |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110342421A (en) * | 2019-08-08 | 2019-10-18 | 台州市东鸿环保科技有限公司 | A kind of oil pump and method with fast lifting function |
| CN110342421B (en) * | 2019-08-08 | 2024-05-28 | 张家口甲隆科技有限公司 | Oil pump with rapid lifting function and method |
| CN110878741A (en) * | 2019-11-20 | 2020-03-13 | 扬州润盈机械有限公司 | Novel adjustable manual pump |
| CN111271255A (en) * | 2020-03-03 | 2020-06-12 | 周明剑 | Air compressor for compressing gas and improving gas pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107542637B (en) | 2023-07-04 |
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Address after: 317608 Taizhou Juli Tools Co., Ltd., Xuanmen Industrial City, Lupu Town, Yuhuan City, Taizhou City, Zhejiang Province Applicant after: TAIZHOU JULI TOOLS Co.,Ltd. Address before: 317605 Xuanmen Industrial City, Lupu Town, Yuhuan County, Taizhou City, Zhejiang Province Applicant before: TAIZHOU JULI TOOL Co.,Ltd. |
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