CN204226131U - Straight-shaft plunger pump - Google Patents
Straight-shaft plunger pump Download PDFInfo
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- CN204226131U CN204226131U CN201420662936.6U CN201420662936U CN204226131U CN 204226131 U CN204226131 U CN 204226131U CN 201420662936 U CN201420662936 U CN 201420662936U CN 204226131 U CN204226131 U CN 204226131U
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- shaft
- plunger
- swash plate
- straight
- main shaft
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Abstract
A kind of straight-shaft plunger pump, comprise housing and the pump housing, described enclosure interior installs main shaft, swash plate is connected in the middle part of main shaft, backing plate is installed in swash plate upper end, backing plate side erection column plug device, and plunger assembly head end arranges filler opening end and arranges oil drain out, plunger assembly adopts one-way valve distributing construction to comprise the steel ball of plunger, one-way valve, oil sealing effect, installs return spring between two steel balls.This straight-shaft plunger pump adopts split type pump shaft, and main shaft is linked into an integrated entity by flat key and back-up ring with swash plate, improves the technology capability of pump shaft, and conventional equipment can complete processing and detect, and reduces cost of production and production difficulty.
Description
Technical field
The utility model relates to a kind of hydraulic pressure quantitative plunger pump, is specifically related to a kind of straight-shaft plunger pump.
Background technique
Plunger pump is an important device of hydraulic system, and it utilizes plunger to-and-fro motion in cylinder bore, makes the volume of seal operation cavity volume change to realize the oil hydraulic pump of oil suction, force feed.The swash plate of d-axis plunger and axle synchronous axial system, the inclined-plane compression plunger that swash plate is formed is reciprocating in housing.Straight-shaft plunger pump generally of the same type is the pump shaft of swash plate and integrated spindle axis formula, this kind of complex structure, and difficulty of processing is large, to process equipment and measuring equipment precision prescribed high, conventional equipment is difficult to realize the processing to pump shaft and detection.
Summary of the invention
For above-mentioned situation, complicated in order to solve curved shaft type pump shaft structure, manufacturability is poor, processing and the large problem of detection difficulty, the utility model provides a kind of split type straight-shaft plunger pump, after being designed to split type pump shaft, main shaft is linked into an integrated entity by flat key and back-up ring with swash plate, improve the technology capability of pump shaft, conventional equipment can complete processing and detect, and reduces cost of production and production difficulty.
For achieving the above object, the technological scheme adopted is:
A kind of straight-shaft plunger pump, comprises housing and the pump housing, and described enclosure interior installs main shaft, connects swash plate in the middle part of described main shaft, and backing plate is installed in described swash plate upper end, described backing plate side erection column plug device.
Be connected with back-up ring by flat key between described swash plate and described main shaft, realize separating of swash plate and main shaft, form split-type structural, be easy to the processing of swash plate and main shaft.
Described flat key is arranged between main shaft and swash plate, and described shield ring sleeve is fixed on swash plate side on main shaft, and swash plate blocks by the projection in the middle part of main shaft and back-up ring, ensure that being connected firmly between main shaft and swash plate.
Described plunger assembly head end arranges filler opening, and described plunger assembly end arranges oil drain out.
Described plunger assembly adopts one-way valve distributing construction to comprise plunger, one-way valve, the steel ball of oil sealing effect and steel ball, installs the return spring recovering steel ball sealing process between described steel ball and steel ball; This plunger assembly can also be set as two groups, forms different displacements combination.
The beneficial effect that the utility model straight-shaft plunger pump realizes: be connected with back-up ring by flat key between swash plate and main shaft, achieve the split-type structural of this straight-shaft plunger pump, swash plate separates with main shaft, factory can be processed separately by all parts, conventional equipment can complete processing and detect, greatly reduce cost of production and difficulty of processing, in follow-up work process, run into single part damage and can also change this part separately, save a very large maintenance expenses.This split type straight-shaft plunger pump solves main shaft, swash plate processing request precision is high, and conventional equipment cannot be processed, the problem that detects, makes most processing enterprise can processing and fabricating.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model straight-shaft plunger pump;
Fig. 2 is the main shaft of the utility model straight-shaft plunger pump and the connection diagram of swash plate;
Fig. 3 is the main shaft of the utility model straight-shaft plunger pump and the connection side-looking generalized section of swash plate.
In figure: 1 housing, 2 main shafts, 3 swash plates, 4 flat keys, 5 back-up rings, 6 pump housings, 7 steel balls, 8 valve seats, 9 return springs, 10 steel balls, 11 plungers, 12 backing plates, 13 bearings.
Embodiment
As shown in Figure 1, straight-shaft plunger pump is a kind of quantitative plunger pump product of high pressure, adopts one-way valve distributing construction, can bidirectional rotation, ensure that the stable of delivery pressure.Plunger pump main shaft 2 bearing is bearing on housing 1 and the pump housing 6, and swash plate 3 is linked into an integrated entity with main shaft 2 by flat key 4 and back-up ring 5, and when main shaft 2 rotates, drive swash plate 4, backing plate 12 rotate, the height conversion of backing plate 12 inclined-plane; Plunger 11 to-and-fro motion in pump housing hole, makes the volume of seal operation cavity volume change to realize the oil hydraulic pump of oil suction, force feed.When plunger 11 stretches out, steel ball 10 is separated with plunger 11 endoporus, and fluid enters plunger 11 and the pump housing 6 vestibule, and steel ball 7 seals valve seat 8 hydraulic fluid port; When plunger 11 is pressed into the pump housing 6, sealed volume reduces, and steel ball 10 seals plunger 11 endoporus, and fluid is pushed steel ball 7 open and discharged the pump housing 6.The alternation of two place's one-way valve type flow-distribution mechanisms, realizes the process of oil suction and force feed.
As shown in Figure 2,3, straight-shaft plunger pump of the same type is the pump shaft of swash plate and integrated spindle axis formula, this kind of structural manufacturing process complexity, and difficulty of processing is large, to process equipment and measuring equipment precision prescribed high.After being designed to split type pump shaft, main shaft 2 and swash plate 3 are linked into an integrated entity by flat key 4 and back-up ring 5, each processing separately, improve the manufacturability of pump shaft, conventional equipment can complete processing and detect, this straight-shaft plunger pump forms Flat valve structure by two groups of one-way valves simultaneously, single port oil extraction and twoport oil extraction two kinds of oil extraction modes can be realized, ensure that the stable of delivery pressure, housing 1 adopts aluminum alloy material, compared with conventional tooth wheel pump, there is pressure high, compact structure, volume is little, the advantage such as lightweight, Hoisting Machinery can be widely used in, environmental protection machinery, engineering machinery, mining machinery, the fields such as building machinery.
Claims (5)
1. a straight-shaft plunger pump, comprise housing (1) and the pump housing (6), it is characterized in that: described enclosure interior installs main shaft (2), described main shaft (2) middle part connects swash plate (3), backing plate (12) is installed in described swash plate (3) upper end, described backing plate (12) side erection column plug device.
2. straight-shaft plunger pump according to claim 1, is characterized in that: be connected with back-up ring (5) by flat key (4) between described swash plate (3) and described main shaft (2).
3. straight-shaft plunger pump according to claim 2, is characterized in that: described flat key (4) is arranged between main shaft (2) and swash plate (3), and described back-up ring (5) is enclosed within main shaft (2) and is fixed on swash plate (3) side.
4. the straight-shaft plunger pump according to claim 1 or 3, is characterized in that: described plunger assembly head end arranges filler opening, and described plunger assembly end arranges oil drain out.
5. the straight-shaft plunger pump according to claim 1 or 3, it is characterized in that: described plunger assembly adopts one-way valve distributing construction to comprise plunger (11), one-way valve, the steel ball (7) of oil sealing effect and steel ball (10), the return spring (9) of installation recovery steel ball sealing process between described steel ball (7) and steel ball (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420662936.6U CN204226131U (en) | 2014-11-10 | 2014-11-10 | Straight-shaft plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420662936.6U CN204226131U (en) | 2014-11-10 | 2014-11-10 | Straight-shaft plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204226131U true CN204226131U (en) | 2015-03-25 |
Family
ID=52924235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420662936.6U Active CN204226131U (en) | 2014-11-10 | 2014-11-10 | Straight-shaft plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204226131U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358665A (en) * | 2014-11-10 | 2015-02-18 | 济南镇海机械厂 | Straight-axis plunger pump |
-
2014
- 2014-11-10 CN CN201420662936.6U patent/CN204226131U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358665A (en) * | 2014-11-10 | 2015-02-18 | 济南镇海机械厂 | Straight-axis plunger pump |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |