CN201560933U - Self-assignment constant-power variable valve core mechanism - Google Patents
Self-assignment constant-power variable valve core mechanism Download PDFInfo
- Publication number
- CN201560933U CN201560933U CN2009202214940U CN200920221494U CN201560933U CN 201560933 U CN201560933 U CN 201560933U CN 2009202214940 U CN2009202214940 U CN 2009202214940U CN 200920221494 U CN200920221494 U CN 200920221494U CN 201560933 U CN201560933 U CN 201560933U
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- CN
- China
- Prior art keywords
- variable
- variable valve
- spool
- valve core
- plunger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Reciprocating Pumps (AREA)
Abstract
The utility model discloses a self-assignment constant-power variable valve core mechanism, consisting of an integrated end enclosure cap, as well as an adjusting screw, an upper spring base, a big characteristic spring, a small characteristic spring, a lower spring base, a variable valve body with an oil channel communicated with a bore, a variable valve core with the bore and an oil channel and a variable plunger with the oil discharging channel communicated with the bore and an interconnected pore interconnected with the oil channel, which are connected in order in the integrated end enclosure cap. The self-assignment constant-power variable valve core mechanism has simple structure and reasonable design, is an ideal plunger pump matching structure and has the energy-saving effect.
Description
Affiliated technical field
The utility model relates to a kind of plunger pump stroking mechanism, and particularly a kind of spool is widely used in the plunger pump production industry from the permanent power and variable of flow mechanism.
Technical background
At present, the stroking mechanism that pump is taken out the axial variable displacement plunger pump of production industry use is is mainly connected and composed by variable shell, servopiston, the pump housing, live axle, complicated integral structure, part is many, manufacture cost is higher relatively, the stroking mechanism of Yan Zhi modified model radial plunger pump again, and it is complicated that structure is also wanted, not only increased fork, responsive piston structure spare, runner processing is comparatively complicated simultaneously.
Summary of the invention
In order to overcome the deficiencies in the prior art, it is a kind of that the utility model provides. and the spool that utilizes spool endoporus can regulate flow is from the permanent power and variable stroking mechanism of flow, and it can start by small flow, and simple in structure.
The technological scheme that its technical problem that solves the utility model adopts is: the end socket cap that is made into one, variable valve body, the design of the adjusting screw that is linked in sequence in it, upper spring seat, big characteristic spring, little characteristic spring, lower spring cup, oil drain canal that design has to be communicated with endoporus endoporus is arranged and cross oily channel capacity spool, design have the oil drain canal that is communicated with endoporus and oily channel connection intercommunicating pore variable piston and constitute.Spool is from the permanent power and variable of flow mechanism, be to utilize the endoporus of spool will control oil sources to introduce constant power valve core (time be in small flow state) from the variable valve body, act on annulus area and overcome spring force when system pressure raises gradually, make the left chamber fluid of its permanent power and variable plunger emit, enter, seal, reach the purpose of oil pump driving variable.
Be permanent power and variable spool when moving left, the left chamber fluid of permanent power plunger is emitted, and this moment, permanent power plunger moved left, and the stator offset is diminished under the effect of fuel feeding all the time of the little control plunger of pump right-hand member, and promptly oil pump flow diminishes.Otherwise the constant power valve core moves to right, and the left chamber of permanent power plunger enters fluid, and this moment, permanent power plunger moved to right.Making the eccentric quantitative change of stator is greatly that oil pump flow becomes greatly.When the constant power valve core moves to left or moves to right when stopping, chamber, permanent power plunger left side this moment is closed state and promptly is fixed on a certain variate-value.
Spool has the following advantages from the permanent power and variable of flow mechanism:
1. utilize the spool endoporus will control oil sources and introduce chamber, a variable piston left side.
2. initial start oil pump spool is in the position of chamber, sealing variable piston left side path.Be that small flow starts at this moment, reach the minimum operating mode of starting torque.
3. raise gradually when pressure, the masterpiece that spool ring surface product moment produces is used for spring, and spool moved to left and made chamber, a pressure oil entering variable plunger left side this moment, and variable piston moves to right, and reaches big flow status.
4. when pressure continuation rising, spool continues to move to left its pressure oil is emitted from chamber, a variable piston left side, and (the little control plunger fuel feeding effect all the time of the pump the other end at this moment) variable piston moves to right and makes the stator offset diminish, and promptly oil pump flow diminishes.
5. the spool motion that moves to left is a permanent power motion curve by characteristic spring decision.
6. the existing structure of structure is all simple many.
7. this principle and mode of structure can replace the variable mode of the same working condition requirement of existing plunger pump fully.
The beneficial effects of the utility model are, can realize that small flow starts, and reach the minimum operating mode of starting torque, and convenient the use can replace the variable structure of the same working condition requirement of existing plunger pump fully, has power savings.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model.
Accompanying drawing number is: 1. adjusting screw, and 2. end socket cap, 3. upper spring seat, 4. big characteristic spring, 5. little characteristic spring, 6. lower spring cup, 7. variable valve body, 8. variable spool, 9. variable piston, 10. endoporus, 11. oil drain canals, 12. cross oily passage, 13. intercommunicating pores.
Embodiment
With reference to Fig. 1, the end socket cap (2) that is made into one, the adjusting screw that is linked in sequence in it (1), upper spring seat (3), big characteristic spring (4), little characteristic spring (5), lower spring cup (6), design have variable valve body (7), the design of the oil drain canal (11) that is communicated with endoporus (10) that endoporus (10) is arranged and cross the variable spool (8) of oily passage (12), design have the oil drain canal (11) that is communicated with endoporus (10) and oily passage (12) connection intercommunicating pore (13) variable piston (9) and constitute.Spool is from the permanent power and variable of flow mechanism, be that the endoporus (10) that utilizes variable spool (8) will be controlled oil sources and introduce permanent power and variable spool (8) (time be in small flow state) from variable valve body (7), act on annulus area and overcome spring force when system pressure raises gradually, make the left chamber fluid of its permanent power and variable plunger (9) emit, enter, seal, reach the purpose of oil pump driving variable.
Be that permanent power and variable spool (8) is when moving left, the left chamber fluid of permanent power and variable plunger (9) is emitted, and this moment, permanent power and variable plunger (9) moved left under the effect of fuel feeding all the time of the little controlled variable plunger (9) of pump right-hand member, the stator offset is diminished, and promptly oil pump flow diminishes.Otherwise permanent power and variable spool (8) moves to right, and the left chamber of permanent power and variable plunger (9) enters fluid, and permanent power and variable plunger this moment (9) moves to right.Making the eccentric quantitative change of stator is greatly that oil pump flow becomes greatly.When permanent power and variable spool (8) moves to left or moves to right when stopping, the left chamber of permanent power and variable plunger (9) this moment is closed state and promptly is fixed on a certain variate-value.
Claims (1)
1. a spool is from the permanent power and variable of flow mechanism, it is characterized in that: variable spool, the design that the end socket cap that is made into one, variable valve body, the design of the adjusting screw that is linked in sequence in it, upper spring seat, big characteristic spring, little characteristic spring, lower spring cup, oil drain canal that design has to be communicated with endoporus have endoporus and cross oily passage have the oil drain canal that is communicated with endoporus and oily channel connection intercommunicating pore variable piston and constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202214940U CN201560933U (en) | 2009-10-22 | 2009-10-22 | Self-assignment constant-power variable valve core mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202214940U CN201560933U (en) | 2009-10-22 | 2009-10-22 | Self-assignment constant-power variable valve core mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201560933U true CN201560933U (en) | 2010-08-25 |
Family
ID=42626079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202214940U Expired - Fee Related CN201560933U (en) | 2009-10-22 | 2009-10-22 | Self-assignment constant-power variable valve core mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201560933U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865207A (en) * | 2012-08-01 | 2013-01-09 | 安徽博一流体传动股份有限公司 | Axial swash plate type hydraulic plunger pump |
| CN104234992A (en) * | 2013-11-20 | 2014-12-24 | 江苏恒立液压有限公司 | Plunger pump power control device and control method thereof |
| CN107701385A (en) * | 2017-09-07 | 2018-02-16 | 广州市华欣液压有限公司 | A kind of electric-hydraulic proportion formula plunger pump |
-
2009
- 2009-10-22 CN CN2009202214940U patent/CN201560933U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865207A (en) * | 2012-08-01 | 2013-01-09 | 安徽博一流体传动股份有限公司 | Axial swash plate type hydraulic plunger pump |
| CN102865207B (en) * | 2012-08-01 | 2016-08-03 | 安徽博一流体传动股份有限公司 | Axially swash plate type hydraulic plunger pump |
| CN104234992A (en) * | 2013-11-20 | 2014-12-24 | 江苏恒立液压有限公司 | Plunger pump power control device and control method thereof |
| CN104234992B (en) * | 2013-11-20 | 2016-08-17 | 江苏恒立液压有限公司 | A kind of power of plunger pump controls device and control method thereof |
| CN107701385A (en) * | 2017-09-07 | 2018-02-16 | 广州市华欣液压有限公司 | A kind of electric-hydraulic proportion formula plunger pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100825 Termination date: 20111022 |