CN203783874U - Radial plunger pump - Google Patents
Radial plunger pump Download PDFInfo
- Publication number
- CN203783874U CN203783874U CN201420209953.4U CN201420209953U CN203783874U CN 203783874 U CN203783874 U CN 203783874U CN 201420209953 U CN201420209953 U CN 201420209953U CN 203783874 U CN203783874 U CN 203783874U
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- CN
- China
- Prior art keywords
- oil
- plunger
- pump
- way valve
- force feed
- 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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- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
The utility model discloses a radial plunger pump. A pump cavity of a pump body is communicated with an oil supplying box; a crankshaft, and plunger assemblies distributed in the radial direction are arranged in the pump cavity; a cam on the crankshaft is sleeved with a bearing; the head part of a plunger is propped against the outer circumferential wall of the bearing; the axial line of the cam and the axial line of the crankshaft are not in a same straight line; a balance block is connected onto the crankshaft; an assistant oil absorbing passage communicated with the pump cavity and the oil supplying box and formed by connecting a radial oil through hole in the balance block, an axial oil through hole in the crankshaft and a through hole in the pump body is additionally arranged. The radial plunger pump has the advantages that after the assistant oil absorbing passage is additionally arranged, when the crankshaft is linked to operate along with a rotating shaft of a motor, air in the assistant oil absorbing passage is thrown out due to centrifugal acting force to generate suction force, and oil liquid in the oil supplying box flows into the pump cavity after passing through the assistant oil absorbing passage due to the suction force, so that the radial plunger pump can enter the working condition faster.
Description
Technical field
The utility model relates to a kind of plunger pump, especially relates to a kind of radial plunger pump.
Background technique
Radial plunger pump is a kind of hydraulic component, has volumetric efficiency high, smooth running, and discharge uniformity is good, and noise is low, working pressure advantages of higher.Existing radial plunger pump comprises the pump housing, in the pump chamber of the pump housing, be fixed with bent axle and multiple radially-arranged plunger assembly of axial limiting, cam on bent axle is arranged with bearing outward, one end of plunger is against on the outer circle wall of bearing, because the axis of cam and the axis of bent axle be not on same straight line, after the rotatingshaft interlock at bent axle with motor, reciprocating by plunger, complete oil suction and force feed, oil suction is more difficult; And in the time that radial plunger pump is worked for the first time, in pump chamber, be full of air, from fuel tank, be drawn onto fluid more difficult, just can enter working state after needing longer a period of time of exhaust, urgently improve.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of radial plunger pump that adds auxiliary suction passage, and oil suction is convenient, can comparatively fast enter working state.
The utility model solves the problems of the technologies described above adopted technological scheme: a kind of radial plunger pump, comprise the pump housing, the pump chamber of the pump housing is connected with fuel tank, in pump chamber, be provided with bent axle and multiple radially-arranged plunger assembly of axial limiting, cam on bent axle is arranged with bearing outward, the head of plunger is against on the outer circle wall of bearing, and the axis of cam and the axis of bent axle, not on same straight line, are connected with equilibrium block on bent axle; Also be provided with an auxiliary suction passage that is communicated with pump chamber and fuel tank, described auxiliary suction passage comprise be located on equilibrium block at least one radially oil through, be located at the axial oil through on bent axle and be located at the through hole on the pump housing, the outer end of described radially oil through is connected with pump chamber, the inner of described radially oil through is connected with the upper end of axial oil through, and the lower end of described axial oil through is connected with fuel tank by the through hole on the pump housing.
Compared with prior art, the utility model has the advantage of and set up at one by being located at radially oil through on equilibrium block, be located at the axial oil through on bent axle and be located at connection fuel tank that the through hole on the pump housing connects to form and the auxiliary suction passage of pump chamber, in the time that bent axle links with the rotatingshaft of motor, air or fluid in auxiliary suction passage produce suction because operating on centrifugal force is thrown out of, the fluid of fuel tank flows into pump chamber because suction can pass through auxiliary suction passage fast, thereby makes this radial plunger pump can enter faster working state.
As preferably, described radially oil through has four, is cross distribution, and on the axis of described axial oil through and the axis of bent axle and the pump housing, the axis of through hole is on same straight line.Can accelerate speed of oil absorption.
As preferably, described plunger assembly also comprises plunger bushing, is enclosed within spring, oil sucting one-way valve and force feed one-way valve outside plunger, plunger bushing is fixed by bolt and the pump housing, spring one end is against the head of plunger, the spring the other end is against on plunger bushing, oil sucting one-way valve is fixed in the mounting groove of plunger bushing oil inlet end, and force feed one-way valve is arranged in the preformed groove of pump housing bottom setting, and the oil inlet hole of force feed one-way valve is connected with the oil outlet of plunger bushing.
As improvement, described force feed one-way valve is made up of valve body, valve seat, steel ball and turriform spring, the oil inlet hole of force feed one-way valve is located at valve body top, the oil outlet of force feed one-way valve is located on valve body perisporium, steel ball and turriform spring fitting are in the oil pocket of valve body and valve seat formation, the bottom of turriform spring is against on valve seat, and top and the steel ball of turriform spring offset, the oil outlet sealing of steel ball and force feed one-way valve oil inlet hole.By force feed one-way valve modularization, reduce installation difficulty, and reduced installation procedure.
As preferably, described plunger bushing bottom is provided with circular hole, and the top card of described force feed one-way valve valve body is combined in circular hole.Assemble more conveniently, save the calibration that the oil inlet hole of force feed one-way valve and the oil outlet of plunger bushing are communicated with, further reduce installation difficulty.
Brief description of the drawings
Fig. 1 is axial sectional view of the present utility model.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the B-B broken section enlarged view of Fig. 1.
Shown in figure: 1, the pump housing, 1.1, pump chamber, 1.2, through hole, 1.3, preformed groove, 2, bent axle, 2.1, cam, 2.2, equilibrium block, 2.3, oil through radially, 2.4, axial oil through, 3, bearing, 4, plunger, 5, plunger bushing, 6, spring, 7, oil sucting one-way valve, 8.1, valve body, 8.2, valve seat, 8.3, steel ball, 8.4, turriform spring, 9, filter screen.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
This preferred embodiment is a kind of radial plunger pump as shown in Figure 1 to Figure 3, comprise the pump housing 1, the pump chamber 1.1 of the pump housing 1 is connected with fuel tank, in pump chamber 1.1, be provided with bent axle 2 and multiple radially-arranged plunger assembly, bent axle 2 is by upper, lower limit bearing axial limiting, the outer bearing 3 that is arranged with of cam 2.1 on bent axle 2, the axis of the axis of cam 2.1 and bent axle 2 is not on same straight line, on bent axle 2, be connected with equilibrium block 2.2, plunger assembly comprises plunger 4 and plunger bushing 5, be enclosed within the spring 6 outside plunger 4, oil sucting one-way valve 7 and force feed one-way valve, the head of plunger 4 is against on the outer circle wall of bearing 3, plunger bushing 5 is fixing by bolt and the pump housing 1, spring 6 one end are against the head of plunger 4, spring 6 the other ends are against on plunger bushing 5, oil sucting one-way valve 7 is fixed in the mounting groove of plunger bushing 5 oil inlet ends, force feed one-way valve is arranged in the preformed groove 1.3 of the pump housing 1 bottom setting, the oil inlet hole of force feed one-way valve is connected with the oil outlet of plunger bushing 5.Between plunger bushing 5 and the pump housing 1 bottom, be provided with seal ring, for preventing oil impregnate between pump chamber 1.1 and preformed groove 1.3, preformed groove 1.3 is communicated with hydraulic circuit.
Wherein, force feed one-way valve is made up of valve body 8.1, valve seat 8.2, steel ball 8.3 and turriform spring 8.4, the oil inlet hole of force feed one-way valve is located at valve body 8.1 tops, the oil outlet of force feed one-way valve is located on valve body 8.1 perisporiums, steel ball 8.3 and turriform spring 8.4 are arranged in the oil pocket that valve body 8.1 and valve seat 8.2 form, the bottom of turriform spring 8.4 is against on valve seat 8.2, and the top of turriform spring 8.4 and steel ball 8.3 offset, and steel ball 8.3 seals with the oil outlet of force feed one-way valve oil inlet hole.And plunger bushing 5 bottoms are provided with circular hole, the top card of force feed one-way valve valve body 8.1 is combined in the circular hole of plunger bushing 5, between the circular hole of plunger bushing 5 and force feed one-way valve valve body 8.1, is provided with seal ring.
The feature of this radial plunger pump is to be also provided with an auxiliary suction passage that is communicated with pump chamber 1.1 and fuel tank, auxiliary suction passage comprise be located on equilibrium block 2.2 at least one radially oil through 2.3, be located at the axial oil through 2.4 on bent axle 2 and be located at the through hole 1.2 on the pump housing 1, radially the outer end of oil through 2.3 is connected with pump chamber 1.1, radially the inner of oil through 2.3 is connected with the upper end of axial oil through 2.4, and axially the lower end of oil through 2.4 is connected with fuel tank by the through hole 1.2 on the pump housing 1.Setting up after this auxiliary suction passage, bent axle 2 is with the rotatingshaft interlock of motor, air in auxiliary suction passage produces suction because operating on centrifugal force is thrown out of, the fluid of fuel tank is because suction is flowing into pump chamber 1.1 after by auxiliary suction passage, thereby makes this radial plunger pump can enter faster working state.
As preferably, radially oil through 2.3 has four, is cross distribution, axially on the axis of oil through 2.4 and the axis of bent axle 2 and the pump housing 1 axis of through hole 1.2 on same straight line.
For preventing that greasy dirt from flowing into pump chamber 1.1 from fuel tank, the filler opening place of the pump housing 1 is all provided with filter screen 9.
Claims (5)
1. a radial plunger pump, comprise the pump housing (1), the pump chamber (1.1) of the pump housing (1) is connected with fuel tank, in pump chamber (1.1), be provided with bent axle (2) and multiple radially-arranged plunger assembly of axial limiting, the outer bearing (3) that is arranged with of cam (2.1) on bent axle (2), the head of plunger (4) is against on the outer circle wall of bearing (3), and the axis of the axis of cam (2.1) and bent axle (2), not on same straight line, is connected with equilibrium block (2.2) on bent axle (2), it is characterized in that: be also provided with an auxiliary suction passage that is communicated with pump chamber (1.1) and fuel tank, described auxiliary suction passage comprises at least one oil through (2.3) being radially located on equilibrium block (2.2), be located at the axial oil through (2.4) on bent axle (2) and be located at the through hole (1.2) on the pump housing (1), the outer end of described radially oil through (2.3) is connected with pump chamber (1.1), the inner of described radially oil through (2.3) is connected with the upper end of axial oil through (2.4), the lower end of described axial oil through (2.4) is connected with fuel tank by the through hole (1.2) on the pump housing (1).
2. radial plunger pump according to claim 1, is characterized in that: described radially oil through (2.3) has four, is cross distribution; The axis of the upper through hole (1.2) of the axis of the axis of described axial oil through (2.3) and bent axle (2) and the pump housing (1) is on same straight line.
3. radial plunger pump according to claim 1, it is characterized in that: described plunger assembly also comprises plunger bushing (5), be enclosed within the outer spring (6) of plunger (4), oil sucting one-way valve (7) and force feed one-way valve, plunger bushing (5) is fixing by bolt and the pump housing (1), spring (6) one end is against the head of plunger (4), spring (6) the other end is against on plunger bushing (5), oil sucting one-way valve (7) is fixed in the mounting groove of plunger bushing (5) oil inlet end, force feed one-way valve is arranged in the preformed groove (1.3) of the pump housing (1) bottom setting, the oil inlet hole of force feed one-way valve is connected with the oil outlet of plunger bushing (5).
4. radial plunger pump according to claim 3, it is characterized in that: described force feed one-way valve is by valve body (8.1), valve seat (8.2), steel ball (8.3) and turriform spring (8.4) composition, the oil inlet hole of force feed one-way valve is located at valve body (8.1) top, the oil outlet of force feed one-way valve is located on valve body (8.1) perisporium, steel ball (8.3) and turriform spring (8.4) are arranged in the oil pocket of valve body (8.1) and valve seat (8.2) formation, the bottom of turriform spring (8.4) is against on valve seat (8.2), the top of turriform spring (8.4) and steel ball (8.3) offset, steel ball (8.3) seals with the oil outlet of force feed one-way valve oil inlet hole.
5. radial plunger pump according to claim 4, is characterized in that: described plunger bushing (5) bottom is provided with circular hole, and the top card of described force feed one-way valve valve body (8.1) is combined in the circular hole of plunger bushing (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420209953.4U CN203783874U (en) | 2014-04-28 | 2014-04-28 | Radial plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420209953.4U CN203783874U (en) | 2014-04-28 | 2014-04-28 | Radial plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203783874U true CN203783874U (en) | 2014-08-20 |
Family
ID=51320067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420209953.4U Expired - Fee Related CN203783874U (en) | 2014-04-28 | 2014-04-28 | Radial plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203783874U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486269A (en) * | 2019-08-13 | 2019-11-22 | 德州市生辉液压有限公司 | A kind of radial plunger pump and its plunger pair |
| CN112483348A (en) * | 2020-12-07 | 2021-03-12 | 中国民航大学 | Flow distribution type blade cam compound pump |
-
2014
- 2014-04-28 CN CN201420209953.4U patent/CN203783874U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486269A (en) * | 2019-08-13 | 2019-11-22 | 德州市生辉液压有限公司 | A kind of radial plunger pump and its plunger pair |
| CN112483348A (en) * | 2020-12-07 | 2021-03-12 | 中国民航大学 | Flow distribution type blade cam compound pump |
| CN112483348B (en) * | 2020-12-07 | 2021-10-08 | 中国民航大学 | Flow distribution type blade cam compound pump |
| WO2022121282A1 (en) * | 2020-12-07 | 2022-06-16 | 中国民航大学 | Flow distribution-type blade cam combination 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: 20140820 Termination date: 20160428 |