CN106949045A - A kind of segmented high pressure three-screw pump - Google Patents
A kind of segmented high pressure three-screw pump Download PDFInfo
- Publication number
- CN106949045A CN106949045A CN201710280199.1A CN201710280199A CN106949045A CN 106949045 A CN106949045 A CN 106949045A CN 201710280199 A CN201710280199 A CN 201710280199A CN 106949045 A CN106949045 A CN 106949045A
- Authority
- CN
- China
- Prior art keywords
- screw rod
- screw
- pump
- driven
- high pressure
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
- F04C2/165—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type having more than two rotary pistons with parallel axes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/20—Rotors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
It is an object of the invention to provide a kind of segmented high pressure three-screw pump, including three screw pump, it is characterised in that driving screw rod, driven screw have multiple segmentations, and the junction of each segmentation of junction and driven screw of each segmentation of driving screw rod is mutually staggered.The number of fragments of driven screw is more than the number of fragments of driving screw rod.The screw rod bushing of the present invention, driving screw rod, driven screw are segmented configuration, it is allowed to which screw rod active length is further lengthened, so as to further improve three screw outlet pressure；And it is segmented easy to process, it is allowed to which connected driving screw rod segmentation has certain angular deviation, reduces difficulty of processing.
Description
Technical field
It is segmented the present invention relates to ship lubricating oil system, more particularly to a kind of driving screw rod, driven screw, screw rod bushing
Segmented high pressure three-screw pump.
Background technology
Three screw pump is as a kind of rotor volumes pump, and with flow trim, pressure fluctuation is small, have that self-suction, noise are low, shake
The features such as dynamic small, efficiency high.Conveyed extensively using ship, electric power, oil, lathe, chemical industry, hoisting apparatus, power-equipment etc.
Lubricating oil, fuel oil, hydraulic oil, Seal Oil and coolant etc..It instead of substantially in the lubricating oil and Fuel System of ship
Piston pump and gear pump.As user proposes higher and higher requirement, the integral type of high pressure screw pump to screw rod pump discharge pressure
Long bolt and the production and processing of screw rod bushing and accuracy guarantee difficulty also increase therewith.
In order to meet the requirement of outlet high pressure, need to use more helical pitches in design, increase screw rod active length, together
When reduce the fit clearance of screw rod and screw rod bushing endoporus.But meet the screw rod of this requirement just as elongate rod, in processing and
Deflection deformation is inevitably produced during operation, the back lash between spiral surface, and driven spiral shell can be directly influenced
Gap between the cylindrical bushing endoporus with screw rod of radial facing.Due to these gap width very littles of high-pressure pump requirement, driven screw is scratched
Song deformation easily produces scraping again；Gap is excessive and can decline pump volumetric efficiency.Therefore it can take and screw spiral section is segmented
Mode reduce amount of deflection.It is this that rotated by the pressure-driven of medium in annular seal space that this structure, which allows for driven screw,
Working characteristics, the simultaneously rotation of each section of without prejudice to after segmentation, they are under discharge cavity pressure effect, the composition surface at motion time section
Remain to be in close contact.
Chinese invention patent " high pressure three-screw pump (publication number 103711690B) " discloses a kind of screw rod bushing and driven
Screw rod is divided into three sections of three screw pump, and leading portion screw rod is in cantilever-shaped on the pump housing, and back segment screw rod is located at rear spiral shell by axle sleeve
Bushing, the two ends for interrupting screw rod are corresponding in fly rod shape respectively at front and rear screw rod.The method of implementation above high pressure three-screw pump is all
It is, by driven screw and the processing of screw rod bushing segments, to reduce the difficulty of processing of elongate threaded screw, it is ensured that machining accuracy, but it is main
Dynamic screw rod is still integral type screw rod, it is desirable to the machining accuracy of strict guarantee mobile jib.It is existing when needing further to improve outlet pressure
Some processing method and means can not meet requirement, cause pump volumetric efficiency to decline, lifetime.
The content of the invention
It is an object of the invention to provide one kind reduce difficulty of processing, it is simple and reliable for structure, driving screw rod, driven screw and
The high pressure three-screw pump that screw rod bushing is segmented.
The above-mentioned purpose of the present invention is achieved through the following technical solutions.A kind of segmented high pressure three-screw pump, including three
Screw pump；Three screw pump driving screw rod, driven screw have multiple segmentations, the junction of driving screw rod segmentation and driven screw point
Mutually stagger the junction of section.
A kind of segmented high pressure three-screw pump, can also include：
1. the number of fragments of driven screw is more than the number of fragments of driving screw rod
2. described in screw rod bushing be divided into above and below two parts, have the endoporus matched with principal and subordinate's screw rod in screw rod bushing.Up and down
Two parts screw rod bushing is connected by multiple screws, has seam flange to carry out positioning and radial direction about on screw rod bushing composition surface
Beam.
Advantages and positive effects of the present invention are：
1st, the present invention is combined, can extend three screw pump by stagewise configuration scheme by the screw and bushing of segmentation
Effective pressurization segment length, further improve three screw pump go out
2nd, the junction and the junction of driven screw segmentation that driving screw rod is segmented in the present invention are mutually staggered, it is ensured that three
Mutual cooperation precision of the root screw rod in radial direction, it is to avoid because each section of screw rod mismachining tolerance can during same axial location segmentation
The problem of axial fit clearance that can be caused is excessive.
3rd, under the conditions of realizing equal pressurization segment length, the high linearity difficulty of processing that segmented screw rod of the invention is related to compared with
It is small, it is significantly smaller than the screw rod difficulty of processing not being segmented.
4th, there is chamfering on screw rod bushing composition surface, can reduce and be rubbed caused by abrasion and slight play between segmented screw.
Brief description of the drawings
The segmented high pressure screw pump main sectional view that Fig. 1 designs for the present invention.
The segmented high pressure screw pump side sectional view that Fig. 2 designs for the present invention.
The screw rod stepwise schematic views that Fig. 3 designs for the present invention.
The screw rod bushing schematic diagram that Fig. 4 designs for the present invention.
The non-central diagrammatic cross-section of screw rod that Fig. 5 designs for the present invention.
In figure：1 --- driving screw rod leading portion, 2 --- upper end cover, 3 --- the pump housing, 4 --- screw rod bushing epimere, 5 ---
Under left side driven screw leading portion, 6 --- safety valve, 7 --- left side driven screw back segment, 8 --- driving screw rod back segment, 9 ---
End cap, 10 --- axle sleeve, 11 --- right side driven screw back segment, 12 --- screw rod bushing hypomere, 13 --- right side driven screw
Leading portion, 14 --- balance set, 15 --- bearing, 16 --- stuffing box, 17 --- gland, 18 --- oil return pipe.
Embodiment
Technical scheme is described in further detail below according to Figure of description：
Fig. 1 show the segmented high pressure screw pump main sectional view that the present invention is designed.Point that the present invention that Fig. 2 show is designed
Segmentation high pressure screw pump sectional view, driving screw rod, driven screw number of fragments are preferably two sections.
The present invention is by driving screw rod leading portion 1, upper end cover 2, the pump housing 3, screw rod bushing epimere 4, left side driven screw leading portion 5,
Safety valve 6, left side driven screw back segment 7, driving screw rod back segment 8, bottom end cover 9, axle sleeve 10, right side driven screw back segment 11, spiral shell
Bushing hypomere 12, right side driven screw leading portion 13, balance set 14, bearing 15, stuffing box 16, gland 17, oil return pipe 18.Actively
The corresponding segmentation of screw rod, including：Driving screw rod leading portion 1, driving screw rod back segment 8；The corresponding segmentation of driven screw, including：Side from
Dynamic screw rod leading portion 5, left side driven screw back segment 7, right side driven screw back segment 11, right side driven screw leading portion 13.It is above-mentioned each
Segmentation can be completed by existing processing method respectively.The segmentation position of driving screw rod and driven screw is staggered in the axial direction, is protected
Mutual cooperation precision of three screw rods in radial direction is demonstrate,proved, it is to avoid due to each section of screw rod processing during same axial location segmentation
The problem of axial fit clearance that error is likely to result in is excessive.It is specifically intended that driving screw rod leading portion 1 and driving screw rod back segment 8
By spline connection, as shown in Figure 3.Spline can both ensure mobile jib transmission torque and power, and can allow front and rear two sections of actives
There is certain angle and misalign in screw rod.By being segmented to high pressure screw pump driving screw rod, the processing of key components and parts is reduced
Difficulty, it is ensured that the machining accuracy per segment.Referring to Fig. 4, screw rod bushing epimere 4 and hypomere 12 are machined with seam on composition surface
Flange is easy to positioning and radial constraint, and two sections screw rod bushing is tightened into fixation with screw.Screw rod bushing epimere 4 and screw rod
A chamfering, friction caused by Wear and slight play are separately designed at the composition surface of bushing hypomere 12.Screw rod bushing
Epimere 4 and screw rod bushing hypomere 12 connect after by the circumference at screw rod bushing composition surface and the side wall of screw rod bushing epimere 4
The internal face of ribs and the pump housing 3 coordinates.To ensure the safety of in emergency circumstances high pressure screw pump, in the medium position of the pump housing 3 dress
There is safety valve 6, two fluid bores of the safety valve 6 discharge chamber with high-pressure pump respectively and suction chamber is connected, when loine pressure is high
When the safe pressure of setting, the check valve that discharge chamber high-pressure medium top is opened in safety valve is back to suction chamber.
Described driving screw rod leading portion 1 stretches out upper end cover 2, and upper end cover 2 is connected by screw with the pump housing 3.In stuffing box 16
Inside there are rolling bearing 15 and potted component, gland 17 is connected by screw with stuffing box 16.Left side driven screw epimere 5 and the right side
The upper end of side driven screw epimere 13 is inserted in corresponding balance set 14 respectively to be used to constrain radially, is processed at the top of driven screw
There is tapered ramp, forming oil film in balance set when screw rod rotates plays lubrication.
Referring to Fig. 3, bottom end cover 9 is connected by holding screw with the pump housing 3.Axle bed 10 passes through holding screw and the phase of bottom end cover 9
Even, the counterbore being engaged with three principal and subordinate's screw rods is machined with respectively in axle bed.Referring to Fig. 5, the bottom of described counterbore is machined with
The oilhole of diameter very little is connected with the oil groove of axle bed bottom, and described oil groove is discharged chamber by oil return pipe 18 and high-pressure medium and connected
It is logical.
A kind of segmented high pressure screw pump of the present invention, its general principle is：The driving screw rod of segmentation respectively with segmentation from
Dynamic screw rod, screw rod bushing formation sealed volume.Screw rod in screw rod bushing rotates under the driving of prime mover, porch shape
Fluid media (medium) is sucked into certain vacuum, with the rotation of screw rod, if principal and subordinate's screw rod and screw rod bushing are gradually axially formed
Fluid media (medium) is pressed to outlet by a dry annular seal space, and fluid is discharged into discharge chamber when last annular seal space is opened.Screw rod
Axial force by oil return pipe the high-pressure medium for discharging chamber is incorporated into the axle sleeve in bottom end cover and is balanced, while screw rod
Bottom section is machined with the wedge shape of two semicircle shapes, and pressure film is formed when screw rod rotates and plays a part of balancing axial thrust.
A kind of segmented high pressure three-screw pump that the present invention is provided.Due to high pressure screw pump require principal and subordinate's screw rod be intended to compared with
Long active length, traditional integral type driving screw rod is replaced present invention employs segmented driving screw rod.By by principal and subordinate's spiral shell
Bar and screw rod bushing segments, reduce difficulty of processing, it is ensured that the machining accuracy of each section of part, improve the volume effect of screw pump
Rate, can meet the duty requirements of higher discharge pressure.
Finally it should be noted that embodiment described above is only displaying technical scheme and limited, ability
Domain it is to be appreciated by one skilled in the art that the number of fragments for driving screw rod, driven screw and screw rod bushing should be according to pump
Discharge pressure requires to determine and be not limiting as that two sections can only be divided to, particularly to the modification of the number of fragments of driving screw rod without departing from
The objective and scope of present aspect scheme, it all should cover among the right of patent of the present invention.
Claims (3)
1. a kind of segmented high pressure three-screw pump, including three screw pump, it is characterised in that three screw pump driving screw rod, driven spiral shell
Bar has multiple segmentations, and the junction of driving screw rod segmentation and the junction of driven screw segmentation are mutually staggered.
2. a kind of segmented high pressure three-screw pump as claimed in claim 1, it is characterised in that the segmentation of described driven screw
Quantity is more than the number of fragments of driving screw rod.
3. a kind of segmented high pressure three-screw pump as claimed in claim 1 or 2, it is characterised in that three screw pump screw rod bushing
Two parts above and below being divided into, have chamfering at the composition surface of two parts screw rod bushing up and down；Have in screw rod bushing and driving screw rod, driven
The endoporus of screw rod matching；Two parts screw rod bushing is connected by multiple screws up and down, has seam method on screw rod bushing composition surface
Orchid is positioned and radial constraint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710280199.1A CN106949045A (en) | 2017-04-26 | 2017-04-26 | A kind of segmented high pressure three-screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710280199.1A CN106949045A (en) | 2017-04-26 | 2017-04-26 | A kind of segmented high pressure three-screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106949045A true CN106949045A (en) | 2017-07-14 |
Family
ID=59476872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710280199.1A Pending CN106949045A (en) | 2017-04-26 | 2017-04-26 | A kind of segmented high pressure three-screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106949045A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559467A (en) * | 2017-08-01 | 2018-01-09 | 哈尔滨工程大学 | A kind of three screw pump fluid pulsation energy storage safety valve |
| CN107605724A (en) * | 2017-08-23 | 2018-01-19 | 哈尔滨工程大学 | A kind of wide in range medium three screw pump |
| CN109570348A (en) * | 2019-02-13 | 2019-04-05 | 王勇 | A kind of bending upper die fast fixture and bending machine |
| CN113843064A (en) * | 2021-10-15 | 2021-12-28 | 广东博智林机器人有限公司 | Feeding device and spraying machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB829273A (en) * | 1957-05-13 | 1960-03-02 | Imo Industri Ab | Improvements in or relating to screw pumps or motors |
| DE2001015A1 (en) * | 1969-03-25 | 1970-10-08 | Sigma Lutin | Three-spindle pump, especially for high pressures |
| CN203655618U (en) * | 2013-12-19 | 2014-06-18 | 黄山工业泵制造有限公司 | High-performance high-pressure three-screw pump |
| CN204386878U (en) * | 2015-01-06 | 2015-06-10 | 李兆寒 | A kind of screw pump and screw rod |
-
2017
- 2017-04-26 CN CN201710280199.1A patent/CN106949045A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB829273A (en) * | 1957-05-13 | 1960-03-02 | Imo Industri Ab | Improvements in or relating to screw pumps or motors |
| DE2001015A1 (en) * | 1969-03-25 | 1970-10-08 | Sigma Lutin | Three-spindle pump, especially for high pressures |
| CN203655618U (en) * | 2013-12-19 | 2014-06-18 | 黄山工业泵制造有限公司 | High-performance high-pressure three-screw pump |
| CN204386878U (en) * | 2015-01-06 | 2015-06-10 | 李兆寒 | A kind of screw pump and screw rod |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559467A (en) * | 2017-08-01 | 2018-01-09 | 哈尔滨工程大学 | A kind of three screw pump fluid pulsation energy storage safety valve |
| CN107559467B (en) * | 2017-08-01 | 2019-02-01 | 哈尔滨工程大学 | A kind of three screw pump fluid pulsation energy storage safety valve |
| CN107605724A (en) * | 2017-08-23 | 2018-01-19 | 哈尔滨工程大学 | A kind of wide in range medium three screw pump |
| CN107605724B (en) * | 2017-08-23 | 2018-10-26 | 哈尔滨工程大学 | A kind of wide in range medium three screw pump |
| CN109570348A (en) * | 2019-02-13 | 2019-04-05 | 王勇 | A kind of bending upper die fast fixture and bending machine |
| CN113843064A (en) * | 2021-10-15 | 2021-12-28 | 广东博智林机器人有限公司 | Feeding device and spraying machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106949045A (en) | A kind of segmented high pressure three-screw pump | |
| KR101775806B1 (en) | Screw pump | |
| US1762708A (en) | Pump | |
| CN105626540B (en) | Sectional multi-stage centrifugal pump | |
| WO2017037980A1 (en) | Screw pump | |
| US5507625A (en) | Liquid ring pumps | |
| CN101473139A (en) | Moineau pump | |
| US6200116B1 (en) | Vacuum pumps | |
| CN103711690B (en) | high pressure three-screw pump | |
| RU2342564C1 (en) | Mixed-flow screw-type pump with automatic unit for rotor relief from axial force | |
| CN107100836A (en) | A kind of Unitary Impeller is pressurized three screw pump | |
| US2446194A (en) | Pump construction | |
| CN109578467B (en) | Hydraulic retarder | |
| SE540991C2 (en) | Pump / motor including a gear function | |
| CN202301030U (en) | Single-screw air compressor utilizing water lubrication | |
| RU116188U1 (en) | SCREW MACHINE | |
| CN105927542A (en) | Rotor shaft seal structure for double-screw compressor | |
| CN204299866U (en) | Cantilever type lubrication three screw pump | |
| CN1481477A (en) | Feed pump | |
| CN102720696A (en) | Preheating water pump | |
| CN106337806A (en) | High-temperature molten aluminum conveying pump | |
| CN206280242U (en) | A kind of high-accuracy quantitative fluid supercharging vane type electric transmission assembly apparatus | |
| CN207178149U (en) | Bent axle and there is its compressor | |
| CN206329487U (en) | The conveyor screw of high temperature aluminium liquid delivery pump | |
| CN205638905U (en) | Pump body power end force -feed lubrication system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170714 |
|
| WD01 | Invention patent application deemed withdrawn after publication |