CN201739111U - Inclined disc connecting rod type axial water pressure plunger pump - Google Patents
Inclined disc connecting rod type axial water pressure plunger pump Download PDFInfo
- Publication number
- CN201739111U CN201739111U CN2010202977579U CN201020297757U CN201739111U CN 201739111 U CN201739111 U CN 201739111U CN 2010202977579 U CN2010202977579 U CN 2010202977579U CN 201020297757 U CN201020297757 U CN 201020297757U CN 201739111 U CN201739111 U CN 201739111U
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- swash plate
- plunger
- main shaft
- pump
- bearing
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Abstract
The utility model discloses an inclined disc connecting rod type axial water pressure plunger pump. The plunger pump comprises a bearing seat, a pump casing, a cylinder body and a pump valve body which are in sequential connection, wherein one end of a main shaft of the plunger pump is arranged on the bearing seat through a support bearing, the other end is arranged in the center of the cylinder body through the support bearing, a plurality of plunger holes are uniformly distributed on the distribution circumference of the cylinder body, and plungers are correspondingly arranged in each plunger hole. The utility model is characterized in that the main shaft of the plunger pump is an end surface crank shaft, the crank axial line of the main shaft and the axial line of the main shaft form a certain included angle, the inclined disc is arranged on a crank of the end surface crank shaft through the support bearing and is movably connected with the plungers through a connecting rod, and the inclined disc is limited by a position limiting mechanism, does not rotate along with the main shaft, does spherical surface swinging around the center thereof, and drives the plungers to do axial reciprocating movement in the plunger holes to complete the water absorption and water discharge function. The utility model has the obvious advantages of small size, light weight and low noise.
Description
Technical field
The utility model belongs to the pump class, is specifically related to a kind of swash plate linkage type axial water pressure plunger pump.
Background technique
The water hydraulic drive technology is as working medium with water, have do not burn, the loss of pollution-free, system compresses is little, response is fast, system's temperature rise is low, system's linear loss and advantage such as local losses is little, system maintenance convenient and maintenance cost is low, it is one of important development direction of current hydraulics, and wide application prospect is arranged.The water hydraulic pump is the crucial dynamical element in the water hydraulic system, is the heart of water hydraulic system, and its performance quality is directly determining the performance quality of whole water hydraulic system.In recent years, the hydraulicdriven high-pressure trend trend of positive displacement, especially the employing of axial water pressure plunger pump is increasingly extensive to make water pressure plunger pump.Advantages such as axial piston pump mainly contains compact structure, the specific power volume is little, in light weight, pressure is high, stroking mechanism arrangement convenience, life-span length.Since late 1960s, the beginning of the seventies, countries such as the U.S., Britain, Japan, Germany, Finland have begun the research of axial water pressure plunger pump in succession, have entered practical stage at present.
At present most widely used is swash plate skid shoe type axial piston pump, prime mover drives swash plate by main shaft and rotates, and then in the cylinder hole, do linear reciprocating motion by the piston shoes drive plunger, the size of realization sealing plunger cavity volume is done cyclically-varying thus, constantly finishes suction and drainage procedure by flow-distribution mechanism again.The Central China University of Science and Technology successfully developed domestic first inclined disc type axial plunger hydraulic pamp in 1996, maximum pressure can reach 6.3 MPa, peak rate of flow 100 L/min, and the highest suction vacuum reaches 0.05 MPa, and volumetric efficiency is greater than 86%, and total efficiency is greater than 74%.This pump is a valve flow swash plate skid shoe type metering pump, by Returnning spring plunger head is contacted all the time with swash plate, the motionless and main shaft of cylinder body drives the swash plate rotation makes plunger do straight reciprocating motion in cylinder body, and main shaft and swash plate adopt overall structure, simple in structure, be convenient to manufacturing and maintenance.The shortcoming that this pump exists is because between plunger and the cylinder sleeve, have bigger lateral force between piston shoes and the swash plate, make plunger and cylinder sleeve, piston shoes and swash plate wear and tear easily, influence operating life, and be difficult to guarantee that piston friction pair seals long-term effectively, make that leakage is bigger than normal.In order to alleviate the negative effect of lateral force, the swashplate angle of this series pump generally is lower than 10 °, and this makes that also pump housing volume is bigger.
Summary of the invention
The utility model provides a kind of swash plate linkage type axial water pressure plunger pump, and the structural type that this pump adopts oil-water separation, flow-distributing valve radially to arrange has reduced volume, has solved the main friction pairs of pump and the lubricated difficult problem of bearing; Driving mechanism adopts the swash plate linkage type, the connecting rod two ends are that universal spherical joint connects, belong to two power bar members, the angle of connecting rod and plunger, be that pressure angle is less, maximum has only about 3 ° usually, so the roll force that plunger is subjected to is very little, the PV value that friction pair between plunger and the cylinder hole bears is very little, the possibility that this has reduced that excessive wear takes place between plunger and the cylinder hole or has sticked together inefficacy; The PV value that the plunger of swash plate bar linkage structure bears is very little, therefore the inclination angle that can increase swash plate to a great extent; Saved this a pair of friction pair of swash plate-piston shoes, reduced the approach that leaks, compared with the skid shoe type plunger pump, identical volume can reach bigger theoretical delivery; Swash plate does not rotate with main shaft, does the sphere swing around its center, and is less to the dynamic balancing influence of main shaft, reduced the vibration of plunger pump.
The realization the technical solution adopted in the utility model is as follows:
A kind of swash plate linkage type axial water pressure plunger pump, comprise the bearing support that is linked in sequence, pump case, cylinder body and pump valve body, described plunger pump main shaft one end is installed on the bearing support by spring bearing, the other end is installed in the cylinder body center by spring bearing, a plurality of plunger holes are distributed on the distribution circle of cylinder body, correspondence is furnished with plunger in each plunger hole, it is characterized in that, described plunger pump main shaft is the end face bent axle, the crank throw axis and the main-shaft axis of main shaft form an angle, swash plate is installed on the crank throw of described end face bent axle by spring bearing, and by connecting rod and plunger flexible connection, the constraint of this limited mechanism of swash plate is not rotated with main shaft, work drives plunger to-and-fro motion vertically in plunger hole and finishes suction around the sphere swing at its center, drain function.
As further improvement of the utility model, described swash plate position-limit mechanism comprises guide runner and guide chute, described guide chute is fixed on the pump case, described guide runner comprises bearing pin, rolling element, hubcap and K type needle bearing, described bearing pin and bearing adopt interference fit, and rolling element and bearing adopt Spielpassung, and described bearing pin is installed in the pin-and-hole of swash plate, keep motionless with respect to swash plate, rolling element is done reciprocally circular arc rolling in guide chute.
As further improvement of the utility model, described swash plate comprises swash plate body and swash plate gland, and described connecting rod one end is installed in by universal spherical joint on the standard pitch circle of swash plate body, and the connecting rod the other end links to each other with plunger by universal spherical joint.
As further improvement of the utility model, described angle is 5 °～25 °.
The utlity model has following advantage:
(1) the utility model adopts rolling type swash plate position-limit mechanism, has reduced the PV value of guide runner and guide chute friction pair, in the working life of having improved the swash plate limit structure, has reduced mechanical vibration and noise.
(2) the utility model adopts the oil-water separation structure, makes most friction pairs and all bearings be in the oil lubrication state, has avoided the serious problems of rolling bearing very fast inefficacy in water, and functional reliability and life-span greatly improve.
(3) the utility model adopts the swash plate connecting rod type transmission mechanism, cancelled swash plate/piston shoes planar friction pair, and the plunger of working in the aqueous medium and the PV value of this a pair of crucial friction pair of cylinder body plunger hole have been reduced, it only is about 6% of swash plate/skid shoe type structure, therefore reduced requirement, promptly reduced difficulty and the cost of production made friction pair material; Big swash plate angle has increased the stroke of plunger, improves the specified output flow of pump.
(4) the utility model adopts the dull and stereotyped flow-distributing valve structure of no guide rod, and simple in structure, technology capability is good, and machining accuracy guarantees that easily sealability is superior, and through-current capability is big, and contamination resistance is strong, and lift is little, the response fast; Adopt engineering plastics and do impact, vibration and the noise that valve seat and valve pocket can also effectively alleviate flow-distributing valve; Suction valve and delivery valve are made a flow valve body, radially arrange, have improved the maintainalbility of pump, have shortened engineering time.
(5) the utility model energy pumping mesohigh sea (light) water and other low-viscosity (mobile) liquids simultaneously also can pumping mineral oil.Compare with centrifugal, axial flow pump, have the delivery pressure height, flow is big, volume is little, advantage such as in light weight, particularly centrifugal pump, axial-flow pump have output flow increases and the rapid characteristic that descends with delivery pressure, does not increase the outstanding advantage that changes with delivery pressure basically and the utlity model has output flow; Compare with the horizontal radial plunger pump, the utlity model has the outstanding advantage that volume is little, in light weight, noise is low.
(6) the utility model is applicable to the occasion of pumping sea (light) water and other low-viscosity (mobile) liquids, is of wide application.As power unit as submarine navigation device mesohigh jet propulsion unit, the power unit of boats and ships water hydraulic transmission system or pump drainage water system, the power unit of underwater hydraulic working tool system, the power unit of metallurgy, coal industry low viscosity and difficult combustion media fluid hydraulic transmission and control system, the power unit of mesohigh fine water mist fire-extinguishing system etc.
Description of drawings
Fig. 1, an example structure schematic representation of the present utility model;
Fig. 2, swash plate/guide runner/guide chute structural representation;
Fig. 3, guide runner structural representation.
Embodiment
Below in conjunction with accompanying drawing enforcement state of the present utility model is further specified:
Figure 1 shows that the embodiment that this enforcement is novel, adopt end face bent axle swash plate pitman shaft to plunger-type structure, main shaft 9 front ends are installed on the bearing support 8 by spring bearing 7, the rear end is installed in cylinder body 2 centers by spring bearing 3, the main shaft lower end becomes 25 ° of acute angles with main-shaft axis O-O: swash plate body 11, swash plate gland 12 are installed on the crank throw of main shaft 9 formed end face bent axles by spring bearing 10, guide runner 4 is installed on the swash plate, rolls back and forth vertically in the guide chute 5 of guide runner on being fixed in pump case 6; The universal spherical joint of one group of connecting rod 13 is installed on the standard pitch circle of swash plate body 11, adopts swash plate gland 12 spacing, and another group universal spherical joint of connecting rod 13 links to each other with one group of plunger 14, adopts ball pivot gland 16 spacing; Suction, drain function are finished in to-and-fro motion vertically in the plunger bushing 18 of one group of plunger on the cylinder body standard pitch circle; In the time of the plunger suction, water inlet one-way valve 19 is opened, and goes out water one-way valve 20 and closes; In the time of the plunger draining, go out water one-way valve 20 and open, water inlet one-way valve 19 is closed; Cylinder body and pump housing rigid joint do not have relative movement between the two; The first road seal ring 15 and the second road seal ring 17 can be installed on the plunger hole of cylinder body, the lubricant oil in (light) aqueous medium of the sea in the cylinder body plunger hole and the pump case be kept apart reliably by this two seals circle.
Fig. 2 is swash plate/guide runner/guide chute structural representation, the crank throw center line O of end face bent axle
1-O
1Work is with crank throw center line O
1-O
1With the intersection point A of main-shaft axis O-O be the summit, with crank throw center line O
1-O
1Conical surface motion for plain line, the synergy of the guide runner 4 that install in crank throw, spring bearing 9 and the swash plate outside, guide runner 4 rolls vertically with guide chute 5 on being fixed in pump case 6 and cooperates, it is the sphere swing at center that swash plate can only be done with the summit, does not have between swash plate and pump case 6 and the cylinder body 2 to relatively rotate.
Fig. 3 is the structural representation of guide runner, and bearing pin 21 adopts Spielpassung with bearing 23, and rolling element 22 adopts Spielpassung with bearing 23 retainers, and retainer is spacing by rolling element 22 shaft shoulders and hubcap 24; Bearing pin 21 is installed in the pin-and-hole of swash plate, keeps motionless with respect to swash plate, and rolling element 22 is done reciprocally circular arc rolling in guide chute 5.
In the utility model when work,, it is that center line is done rotation motion with O-O that input speed and torque make main shaft 9, and the crank throw center line of the formed end face bent axle of main shaft is done with crank throw center line O simultaneously
1-O
1With the intersection point A of main-shaft axis O-O be the summit, with crank throw center line O
1-O
1Conical surface motion for plain line, the synergy of crank throw, spring bearing 10 and guide runner 4, it is the sphere swing at center that swash plate can only be done with summit A, do not have between swash plate body 11, swash plate gland 12 and pump case 6 and the cylinder body 2 and relatively rotate, therefore in that can being installed on the calibration circumference of swash plate, one group of connecting rod 13 links to each other with one group of plunger 14 on the cylinder body calibration circumference respectively, connecting rod 13 connects swash plate body 11, swash plate gland 12 and plunger 14, the swing pulling or the promotion plunger of swash plate are reciprocating, finish suction and draining action; In the time of the plunger suction, water inlet one-way valve 19 is opened, and goes out water one-way valve 20 and closes; In the time of the plunger draining, go out water one-way valve 20 and open, water inlet one-way valve 19 is closed; Swash plate rotates a circle, and each plunger is finished suction and draining respectively once.
Claims (4)
1. swash plate linkage type axial water pressure plunger pump, comprise the bearing support (8) that is linked in sequence, pump case (6), cylinder body (2) and pump valve body (1), main shaft (9) one ends of described plunger pump are installed on the bearing support (8) by spring bearing (7), the other end is installed in cylinder body (2) center by spring bearing (3), a plurality of plunger holes are distributed on the distribution circle of cylinder body (2), correspondence is furnished with plunger (14) in each plunger hole, it is characterized in that, described plunger pump main shaft is the end face bent axle, the crank throw axis and the main-shaft axis of main shaft (9) form an angle, swash plate is installed on the crank throw of described end face bent axle by spring bearing (10), and by connecting rod (13) and plunger (14) flexible connection, the constraint of this limited mechanism of swash plate, do not rotate with main shaft, work is around the sphere swing at its center, and suction is finished in to-and-fro motion vertically in plunger hole to drive plunger (14), drain function.
2. a kind of swash plate linkage type axial water pressure plunger pump according to claim 1, it is characterized in that, described swash plate position-limit mechanism comprises guide runner (4) and guide chute (5), described guide chute (5) is fixed on the pump case (6), described guide runner (4) comprises bearing pin (21), rolling element (22), hubcap (24) and K type needle bearing (23), described bearing pin (21) adopts interference fit with bearing (23), rolling element (22) adopts Spielpassung with bearing (23), described bearing pin (21) is installed in the pin-and-hole of swash plate, keep motionless with respect to swash plate, rolling element (22) is done reciprocally circular arc rolling in guide chute (5).
3. a kind of swash plate linkage type axial water pressure plunger pump according to claim 1 and 2, it is characterized in that, described swash plate comprises swash plate body (11) and swash plate gland (12), described connecting rod (13) one ends are installed in by universal spherical joint on the standard pitch circle of swash plate body (11), and connecting rod (13) the other end links to each other with plunger (14) by universal spherical joint.
4. a kind of swash plate linkage type axial water pressure plunger pump according to claim 1 and 2 is characterized in that described angle is 5 °～25 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202977579U CN201739111U (en) | 2010-08-20 | 2010-08-20 | Inclined disc connecting rod type axial water pressure plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202977579U CN201739111U (en) | 2010-08-20 | 2010-08-20 | Inclined disc connecting rod type axial water pressure plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201739111U true CN201739111U (en) | 2011-02-09 |
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ID=43554386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202977579U Expired - Lifetime CN201739111U (en) | 2010-08-20 | 2010-08-20 | Inclined disc connecting rod type axial water pressure plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201739111U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291581A (en) * | 2013-06-15 | 2013-09-11 | 浙江鸿友压缩机制造有限公司 | Oblique-shaft type oilless compressor |
| CN104929886A (en) * | 2015-06-01 | 2015-09-23 | 吴家集 | Swing disc type axial plunger pump |
| CN107091211A (en) * | 2016-02-18 | 2017-08-25 | 阜新航飞液压机电设备有限公司 | Plunger pump |
| WO2017177936A1 (en) * | 2016-04-13 | 2017-10-19 | 武汉钜威天数字化机械制造有限公司 | Axial plunger pump |
| WO2022020980A1 (en) * | 2020-07-25 | 2022-02-03 | 烟台杰瑞石油装备技术有限公司 | Seven-cylinder plunger pump |
-
2010
- 2010-08-20 CN CN2010202977579U patent/CN201739111U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291581A (en) * | 2013-06-15 | 2013-09-11 | 浙江鸿友压缩机制造有限公司 | Oblique-shaft type oilless compressor |
| CN103291581B (en) * | 2013-06-15 | 2015-06-10 | 浙江鸿友压缩机制造有限公司 | Oblique-shaft type oilless compressor |
| CN104929886A (en) * | 2015-06-01 | 2015-09-23 | 吴家集 | Swing disc type axial plunger pump |
| CN107091211A (en) * | 2016-02-18 | 2017-08-25 | 阜新航飞液压机电设备有限公司 | Plunger pump |
| WO2017177936A1 (en) * | 2016-04-13 | 2017-10-19 | 武汉钜威天数字化机械制造有限公司 | Axial plunger pump |
| CN107288836A (en) * | 2016-04-13 | 2017-10-24 | 武汉钜威天数字化机械制造有限公司 | Axial plunger pump |
| WO2022020980A1 (en) * | 2020-07-25 | 2022-02-03 | 烟台杰瑞石油装备技术有限公司 | Seven-cylinder plunger pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110209 |
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| CX01 | Expiry of patent term |