CN2711412Y - Plunger pump with balance in valve - Google Patents
Plunger pump with balance in valve Download PDFInfo
- Publication number
- CN2711412Y CN2711412Y CN 200420027836 CN200420027836U CN2711412Y CN 2711412 Y CN2711412 Y CN 2711412Y CN 200420027836 CN200420027836 CN 200420027836 CN 200420027836 U CN200420027836 U CN 200420027836U CN 2711412 Y CN2711412 Y CN 2711412Y
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- CN
- China
- Prior art keywords
- plunger
- shaft
- pump
- valve
- valve body
- 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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Abstract
The utility model relates to the structure improvement of a plunger pump, belonging to the technical field of the pump valve. The valve body of the pump is provided with a working cavity which is communicated with an oil inlet and outlet through a check valve, and the inner side of the working cavity is provided with a plunger which is matched movably with the working cavity; one end of the plunger is connected with a crank shaft which is supported in shaft tiles through a link rod, and the upper part of the valve body is provided with a flow guiding hole which can make a front working cavity and a back liquid cavity be communicated through the check valve. When the rotation of the crank shaft can drive the plunger to suck and discharge the liquid, the overall pressure of the front working cavity and the back liquid cavity in the valve body can be interchanged, and a front shaft tile and a back shaft tile can be stressed in alternation; the whole shaft tiles can be infiltrated in clearance through the match of the lubricating oil and the shaft tiles along the crank shaft, the single side stress of the shaft tiles can be avoided, the seizure caused by bad lubrication can be avoided, and the long-term stable and reliable work of the piston pump can be ensured.
Description
Technical field
The utility model relates to a kind of plunger pump, and especially a kind of architecture advances of plunger pump belongs to the pump valve technical field.
Background technique
Understand according to the claimant, the typical structure of existing plunger pump is to be shaped on the active chamber that is communicated with oil inlet and outlet by one-way valve on the valve body, and plunger movingly is housed in the active chamber with it, and an end of plunger is connected with bent axle in being supported on bearing shell by connecting rod.During work, because the active chamber pressure before and after the plunger is unbalanced, so bearing shell is stressed unreasonable.Especially when plunger pump was used as suction booster, no matter which kind of working state plunger was in, and the pressure of preceding active chamber is always greater than the back sap cavity, therefore bearing shell is stressed all the time before, not only easy lopsided wear, and lubricant oil is difficult to enter, and is easy to cause fault occurs killing in the running.
Summary of the invention
The technical problem that will solve of the present utility model is: the shortcoming that exists at above prior art by architecture advances, proposes a kind ofly can avoid that the bearing shell single face is stressed, the valve inner equilibrium plunger pump of assurance good lubrication.
In order to solve above technical problem, be shaped on the active chamber that is communicated with oil inlet and outlet by one-way valve on the valve body of the utility model valve inner equilibrium plunger pump, plunger movingly is housed in the active chamber with it, one end of plunger is connected with bent axle in being supported on bearing shell by connecting rod, and its improvements are to be shaped on the conduction hole that preceding active chamber and back sap cavity is communicated with by one-way valve on the valve body.
Like this, can the outlet one-way valve in valve body be that highly pressurised liquid and back sap cavity normal open are introduced in the liquid discharging valve zone of high pressure, when after plunger is under crank-connecting rod drives, moving, preceding active chamber sucks low pressure liquid, because the back sap cavity communicates with high pressure liquid, therefore the pressure of back sap cavity is greater than preceding active chamber, and total pressure makes bent axle and back bearing shell paste the jail, and the gap appears in preceding bearing shell and bent axle; When plunger moves forward under crank-connecting rod drives, before active chamber and back all is highly pressurised liquid in the sap cavity because the plunger cross section of preceding active chamber is greater than the back sap cavity, therefore before the active chamber total pressure greater than the back sap cavity, total pressure makes bent axle and preceding bearing shell paste the jail as a result, and the gap appears in back bearing shell and bent axle.Like this, when crankshaft rotating drives plunger imbibition and discharge opeing, forward and backward bearing shell is alternately stressed, lubricant oil is able to soak into whole bearing shell along bent axle and bearing shell matching gap, therefore both avoided the single face of bearing shell stressed, avoided again because of insufficient lubrication causes killing, thereby guaranteed plunger pump work reliably steady in a long-term.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is an embodiment's of the utility model a structural representation.
Fig. 2 is the sectional view of Fig. 1.
Embodiment
Embodiment one
Present embodiment is a kind of three chamber valve inner equilibrium plunger pumps, its structure as depicted in figs. 1 and 2, on valve body 1, be shaped on respectively by import one-way valve 3, outlet one-way valve 6 respectively with the active chamber 5 that is communicated with into and out of hydraulic fluid port.Plunger 2 movingly is housed in this active chamber 5 with it, and an end of plunger is connected with bent axle 11 in being supported on forward and backward bearing shell 13,12 by connecting rod 10.Owing in the active chamber 5 plunger 2 is housed, active chamber 4 and back sap cavity 7 before therefore being divided into.Stressed all the time in order to overcome preceding active chamber pressure greater than the preceding bearing shell that the back sap cavity causes, thereby avoid lopsided wear and lubricated not smooth, the cross one another horizontal conduction hole 8 of the system of on valve body 1, boring and vertical conduction hole 9, outer end of hole is all sealed with plug, thereby by outlet one-way valve 6, active chamber and back sap cavity are connected before making.
In addition, electric machine main shaft is connected with bent axle by intermeshing small gear and gearwheel.All the other structures and prior art are similar, do not give unnecessary details in addition.
The working procedure of present embodiment valve inner equilibrium plunger pump is: motor directly drives small gear, and drives crankshaft rotating through the gearwheel with pinion, and bent axle drives the plunger to-and-fro motion by slidercrank mechanism, active chamber imbibition and discharge opeing before making.The pressure in work at present chamber 4 is greater than the back during sap cavity 7, one-way valve 6 is opened, thereby make the back sap cavity be communicated with preceding active chamber zone of high pressure all the time, matching gap alternately appears between crank and the front and back bearing shell, therefore can guarantee that lubricant oil soaks into the bearing shell surface, avoid killing in bent axle and the bearing shell operation process, guarantee to continue normal.In addition, present embodiment also has the following advantages:
1, in the valve body highly pressurised liquid is being guided to the back oil pocket greatly, so compact structure, profile is carefully and neatly attractive in appearance;
2, the replacing of easily damaged parts is all carried out at the pump front end, therefore keeps in repair, maintains very convenient;
3, deceleration component adopts gear transmission, the mechanical efficiency height, and good reliability, the life-span is long;
4, the pump housing and motor are installed on the support, have avoided installing the trouble of stone bolt;
In a word, the valve inner equilibrium plunger pump of present embodiment can be used as many occasions such as water-flooding pump for oil field, coal mining hydro-power pump, high-pressure wash, rust cleaning pump, both can be used as conventional pump, also can be used as suction booster, uses very extensive.
In addition to the implementation, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (5)
1. valve inner equilibrium plunger pump, be shaped on the active chamber that is communicated with oil inlet and outlet by one-way valve on the valve body, plunger movingly is housed in the described active chamber with it, one end of described plunger is connected with bent axle in being supported on bearing shell by connecting rod, is characterised in that: be shaped on the conduction hole that preceding active chamber and back sap cavity is communicated with by one-way valve on the described valve body.
2. according to the described valve inner equilibrium of claim 1 plunger pump, it is characterized in that: bore the cross one another horizontal conduction hole of system and vertical conduction hole on the described valve body, outer end of hole is all sealed with plug.
3. according to the described valve inner equilibrium of claim 2 plunger pump, it is characterized in that: active chamber and back sap cavity before described conduction hole is communicated with by the outlet one-way valve.
4. according to the described valve inner equilibrium of claim 3 plunger pump, it is characterized in that: electric machine main shaft is connected with bent axle by intermeshing small gear and gearwheel.
5. according to the described valve inner equilibrium of claim 4 plunger pump, it is characterized in that: the described motor and the pump housing are installed on the same support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420027836 CN2711412Y (en) | 2004-06-10 | 2004-06-10 | Plunger pump with balance in valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420027836 CN2711412Y (en) | 2004-06-10 | 2004-06-10 | Plunger pump with balance in valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2711412Y true CN2711412Y (en) | 2005-07-20 |
Family
ID=36192515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420027836 Expired - Fee Related CN2711412Y (en) | 2004-06-10 | 2004-06-10 | Plunger pump with balance in valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2711412Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603515B (en) * | 2009-07-02 | 2011-06-01 | 四川杰特机器有限公司 | Inlet pressure balanced type boosting water injection pump |
| CN102852784A (en) * | 2012-08-23 | 2013-01-02 | 上海亿力电器有限公司 | Plunger pump |
| CN102953953A (en) * | 2012-11-22 | 2013-03-06 | 无锡惠山泵业有限公司 | Oil pump |
| CN103629070A (en) * | 2013-12-10 | 2014-03-12 | 天津市通洁高压泵制造有限公司 | Small-sized and multipurpose high-pressure pump |
| CN104696212A (en) * | 2015-01-15 | 2015-06-10 | 浙江沃尔液压科技有限公司 | Crankshaft type high-pressure plunger pump adopting water lubrication |
| CN104454502B (en) * | 2013-09-18 | 2017-03-08 | 贵州中烟工业有限责任公司 | Plunger displacement pump |
| CN113738608A (en) * | 2021-08-26 | 2021-12-03 | 沈然照 | Automatic pressure regulating water injection pump |
-
2004
- 2004-06-10 CN CN 200420027836 patent/CN2711412Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603515B (en) * | 2009-07-02 | 2011-06-01 | 四川杰特机器有限公司 | Inlet pressure balanced type boosting water injection pump |
| CN102852784A (en) * | 2012-08-23 | 2013-01-02 | 上海亿力电器有限公司 | Plunger pump |
| CN102852784B (en) * | 2012-08-23 | 2015-02-04 | 上海亿力电器有限公司 | Plunger pump |
| CN102953953A (en) * | 2012-11-22 | 2013-03-06 | 无锡惠山泵业有限公司 | Oil pump |
| CN104454502B (en) * | 2013-09-18 | 2017-03-08 | 贵州中烟工业有限责任公司 | Plunger displacement pump |
| CN103629070A (en) * | 2013-12-10 | 2014-03-12 | 天津市通洁高压泵制造有限公司 | Small-sized and multipurpose high-pressure pump |
| CN103629070B (en) * | 2013-12-10 | 2016-04-27 | 天津市通洁高压泵制造有限公司 | Little, the multiduty high-pressure service pump of a kind of volume |
| CN104696212A (en) * | 2015-01-15 | 2015-06-10 | 浙江沃尔液压科技有限公司 | Crankshaft type high-pressure plunger pump adopting water lubrication |
| CN104696212B (en) * | 2015-01-15 | 2017-01-18 | 沃尔科技有限公司 | Crankshaft type high-pressure plunger pump adopting water lubrication |
| CN113738608A (en) * | 2021-08-26 | 2021-12-03 | 沈然照 | Automatic pressure regulating water injection pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |