CN101949374A - Swash plate type valve distributing high-pressure pure water plunger pump - Google Patents

Swash plate type valve distributing high-pressure pure water plunger pump Download PDF

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Publication number
CN101949374A
CN101949374A CN 201010272410 CN201010272410A CN101949374A CN 101949374 A CN101949374 A CN 101949374A CN 201010272410 CN201010272410 CN 201010272410 CN 201010272410 A CN201010272410 A CN 201010272410A CN 101949374 A CN101949374 A CN 101949374A
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CN
China
Prior art keywords
plunger
cylinder
valve
flow
swash plate
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CN 201010272410
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Chinese (zh)
Inventor
聂松林
董武涛
阮俊
胡志威
温建东
喻国哲
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北京工业大学
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Priority to CN 201010272410 priority Critical patent/CN101949374A/en
Publication of CN101949374A publication Critical patent/CN101949374A/en

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Abstract

The invention relates to a pump, in particular to a swash plate type valve distributing high-pressure pure water plunger pump. The plunger pump mainly comprises a main shaft, a swash plate-skid shoe mechanism, a plunger-cylinder body mechanism and a valve distributing mechanism, wherein the main shaft drives the cylinder body and the valve distributing mechanism to rotate together through a spline, and the plunger rotates with the cylinder body and reciprocates opposite to the cylinder body; the plunger drives the skid shoe articulated with the plunger to slide on the surface of the swash plate; a suction valve and a delivery valve are sequentially switched with a plunger cavity to realize the functions of water absorption and water discharge of the pump; the swash plate of the invention does not rotate, thereby avoiding the swing of the cylinder body caused by rotation of the swash plate and unbalanced quality; a sliding bearing on the main shaft, a large sliding bearing at the periphery of the cylinder body and a sliding bearing at the tail of the cylinder body relieve the swing of the pump body caused by the flexible bending of the main shaft and the swing of the cylinder body, thereby enabling the plunger pump to operate smoothly; and in the invention, a distributing valve is used for replacing a distributing plate, and a pair of critical friction components are reduced, thereby realizing high pressure of the swash plate type pure water plunger pump.

Description

Inclined disc type valve flow high pressure pure water plunger pump
Technical field
The invention belongs to the pump class, be specifically related to a kind of inclined disc type valve flow high pressure pure water plunger pump.
Background technique
Hydraulic pamp designs and develops it as the core parts of hydraulic transmission system, is the place of the key of development Hydraulic Drive Technology.The structural type of hydraulic pamp commonly used has plunger type, blade type, gear type etc. several in the world at present.Comparatively speaking, the blade of vane pump is line with two gears of stator, gear pump and contacts, and contact PV value is high, and sealing effect is poor; Crucial friction pair in the plunger pump (as plunger/cylinder hole, piston shoes/swash plate, thrust plate/cylinder body end face etc.) mostly is the face contact, PV value under the equal working condition is less relatively, can realize hydrostatic support, and sealing effect is better, be easy to reduce to leak, to guarantee the efficient of pump by the method that increases matching gap length.Therefore, plunger-type structure relatively is suitable for low viscosity medium uses such as seawater, and the national existing hydraulic pamp overwhelming majority such as Britain, the U.S., Germany, Japan, Finland, Denmark have adopted plunger-type structure.
Present various axial water pressure plunger pumps of using are by being divided into substantially on its flow mode: three kinds of valve plate distributions, valve flow, axle flow.All there are two mutual close-fitting kinetic friction pairs in axle flow and valve plate distribution, when using water as working medium, because corrosivity, low viscosity, the bad lubricating conditions of aqueous medium, be difficult to form the liquid lubrication film on the kinematic pair friction pair face, be easy to generate boundary friction or dry friction, two body frictions are not only in the subparticle in environmental contaminants such as the water and the intrusion of inner abrasive dust in addition usually, and can form the trisome friction, make wearing and tearing aggravation, internal leakage increase; Along with the rising of pressure, the PV value on the friction pair surface of contact increases, and the leakage meeting that is caused by fretting wear progressively increases, and is difficult to guarantee the volumetric efficiency of oil hydraulic pump.With present technical specifications, realize the high pressure of pump and keep higher volumetric efficiency that axle flow and valve plate distribution all lack necessary technical support.The middle and high pressure of abroad developing at present, particularly ultrahigh pressure sea (light) water hydraulic pump adopts valve flow pattern more.
The axial arranged form of the many employings of domestic existing valve current allocating type water pressure plunger pump, but because its flow-distributing valve (suction valve and delivery valve) is axial arranged, cause its structure comparatively complicated, volume ratio wants big with other pump class of flow, and the accessory of maintenance and replacing valve body is also extremely difficult.
Summary of the invention
The invention provides a kind of inclined disc type valve flow high pressure pure water plunger pump, solved the big and bigger difficult problem of cylinder body running swing of pure water plunger pump leakage rate, and realized the high-pressure trend of inclined disc type pure water plunger pump.
To achieve these goals, the present invention has taked following technological scheme.Inclined disc type valve flow high pressure pure water plunger pump among the present invention comprises the pump housing 26, be arranged on the main shaft 28 in the pump housing 26 and from left to right be installed in front cover 1, swash plate-piston shoes mechanism, ball pivot 29, plunger-cylinder mechanism, flow-distributing valve and rear end cover 18 on the main shaft 28 successively; Front cover 1 and rear end cover 18 are separately fixed at the left and right sides of the pump housing 26.Wherein:
Described swash plate-piston shoes mechanism comprises swash plate 3, backhaul dish 5 and piston shoes 4, swash plate 3 left sides and front cover 1 are connected, and right lateral surface is the inclined-plane, and backhaul dish 5 is installed in the outer side surface of ball pivot 29, piston shoes 4 circumferentially evenly distribute along backhaul dish 5, and the left side of piston shoes 4 contacts with the inclined-plane of swash plate 3.
Described plunger-cylinder mechanism comprises cylinder body 19, plunger 6 and plunger bushing 7 etc., the endoporus of cylinder body 19 is connected by spline 25 with main shaft 28, the anterior outer side surface of cylinder body 19 links to each other with the pump housing 26 by bearing, the rear outside face links to each other with rear end cover by bearing, form suction cavity volume 20 between the cylinder body 19 and the pump housing 26, along the circumferential direction evenly be provided with the cylinder hole on the cylinder body 19, the cylinder hole is arranged vertically, cover plunger bushing 7 in the cylinder hole, form plunger cavity 10, plunger 6 is arranged in the plunger cavity 10, plunger bushing 7 and plunger 6 Spielpassung, and plunger 6 can horizontally slip in plunger cavity 10; Piston shoes 4 numbers in plunger cavity 10 and the swash plate-piston shoes mechanism equate and the position corresponding, the concave spherical surface of the piston shoes 4 in the bulb of plunger 6 and swash plate-piston shoes mechanism is hinged; On cylinder body 19, along the circumferential direction also evenly be provided with spring eye, spring eye is arranged between the endoporus and cylinder hole of cylinder body, be provided with pressure spring 21 in the spring eye, pressure spring 21 is pressed in the right side of ball pivot 29 by spring seat 22, pressure spring 21 acts on ball pivot 29, ball pivot 29 remakes and is used for backhaul dish 5, and backhaul dish 5 is pressed on the piston shoes 4, and piston shoes 4 are offseted with swash plate 3 all the time.
Use patent " trunk piston set clearance automatic compensation the device " (number of patent application of having declared: 200910243654.6), outer surface at described plunger bushing 7 is provided with annular groove 8, have the diversion passage 9 that is connected with annular groove 8 on the cylinder body 19 of cylinder hole periphery vertically, diversion passage 9 communicates with plunger cavity 10.Along with the switching of suction valve 11 and delivery valve 12, the pressure reduction of plunger cavity 10 place's water and diversion passage 9 place's water changes makes formation water cycle in the diversion passage 9.This circulating water has been realized the clearance automatic compensation of plunger 6 with plunger bushing 7 because pressure reduction changes, and reduces high pressure water and leaks, and has also realized the water lubrication of fitting surface, and has taken away fricative heat.
Described flow-distributing valve is arranged in cylinder body 19 inside, number equates with plunger cavity 10, the right-hand member of each plunger cavity 10 all is connected with one group of flow-distributing valve, and the water inlet of flow-distributing valve is connected with suction cavity volume 20 between the cylinder body 19 and the pump housing 26, and the common cavity 32 of flow-distributing valve is connected with plunger cavity 10; Rear end cover is provided with water sucking mouth 13 and water outlet 14, and water sucking mouth 13 is connected with suction cavity volume 20, and water outlet 14 is connected with the water outlet of flow-distributing valve.Replace thrust plate with flow-distributing valve, reduced a pair of crucial friction pair, help to realize the high-pressure trend of inclined disc type pure water plunger pump.
Described flow-distributing valve comprises suction valve 11 and delivery valve 12, and suction valve 11 and delivery valve 12 all can radially be arranged in the cylinder body 19, and the valve port 31 of suction valve 11 is along the radial opening of main shaft 28.
Described flow-distributing valve comprises suction valve 11 and delivery valve 12, and suction valve 11 and delivery valve 12 all radially are arranged in cylinder body 19, but the valve port 31 of suction valve 11 is along the axially open of main shaft 28.
Described flow-distributing valve comprises suction valve 11 and delivery valve 12, delivery valve 12 radial arrangement, and suction valve 11 is axial arranged, and the valve port 31 of suction valve 11 is along the axially open of main shaft 28.
The right side of the bearing 17 that is connected with rear end cover 18 at cylinder body 19 rear portions is provided with rotating seal component 15.Realize the sealing between high pressure pure water pump water outlet place's high pressure water and water sucking mouth low-pressure water.
Beneficial effect of the present invention:
1) front cover is connected with swash plate by the pin of circumferential arrangement, cylinder body and flow-distributing valve mechanism pin are processed into one, cylinder inner bore has keyway, cylinder body is connected by spline with main shaft, plunger-cylinder body, cylinder body are along with main shaft rotates, swash plate does not rotate, the cylinder body swing of having avoided swash plate rotation unbalance mass, to cause.
2) cylinder body is positioned in the pump housing by the sliding bearing of big sliding bearing and its afterbody.The big sliding bearing on sliding bearing on the main shaft and the cylinder body periphery and the little sliding bearing of afterbody have been alleviated the pump housing swing that main shaft flexural buckling and cylinder body swing acting in conjunction causes, make the plunger pump running steadily.
3) used and declared patent " trunk piston set clearance automatic compensation device ", plunger bushing is embedded in the cylinder hole, directly contact with plunger, plunger bushing middle part periphery communicates with the diversion passage, the diversion passage is communicated with the plunger cavity bottom, realize the trunk piston set clearance automatic compensation, alleviate the wearing and tearing of plunger bushing, reduce leakage rate.
4) flow-distributing valve replaces thrust plate, reduces a pair of crucial friction pair, and flow-distributing valve mechanism follows the cylinder body rotation.Flow-distributing valve can reduce the wear resistance requirement of the filter precision and the material of system, and excellent sealing performance and suction performance are arranged, and helps to realize the high-pressure trend of inclined disc type pure water plunger pump.
5) pump housing ante-chamber has the mouth of a river, and the ante-chamber water storage is realized the water lubrication of piston shoes-swash plate friction pair, and has alleviated the frictional heat effect; Pump housing back cavity, big sliding bearing and cylinder body latter half part with form the suction cavity volume, the suction cavity volume communicates with water sucking mouth on the rear end cover, helps plunger pump and absorbs water.
6) plunger pump water sucking mouth and water outlet are realized high pressure sealing by the rotation combination Sealing.The sliding bearing of cylinder body afterbody is bearing radial force but also bear axial force not only, has effectively simplified the stressed situation of rotating seal, helps improving its life-span.
Figure of description
Fig. 1 is the structural representation of the preferred embodiment of inclined disc type valve flow high pressure pure water plunger pump of the present invention;
Fig. 2 is embodiment two a flow-distributing valve structural representation;
Fig. 3 is embodiment three a flow-distributing valve structural representation;
Among the figure: 1, front cover, 2, pin, 3, swash plate, 4, piston shoes, 5, the backhaul dish, 6, plunger, 7, plunger bushing, 8, annular groove, 9, the diversion passage, 10, plunger cavity, 11, suction valve, 12, delivery valve, 13, the water sucking mouth, 14, water outlet, 15, rotating seal, 16, gutter, 17, sliding bearing, 18, rear end cover, 19, cylinder body, 20, the suction cavity volume, 21, pressure spring, 22, spring seat, 23, big sliding bearing, 24, water filling hole, 25, spline, 26, the pump housing, 27, sliding bearing, 28, main shaft, 29, ball pivot, 30, pump housing ante-chamber, 31, the suction valve valve port, 32, the flow-distributing valve common cavity.
Embodiment
Do detailed description below in conjunction with accompanying drawing to of the present invention:
Embodiment one:
As shown in Figure 1, the present invention includes the pump housing 26, be arranged on the main shaft 28 in the pump housing 26 and from left to right be installed in front cover 1, swash plate-piston shoes mechanism, ball pivot 29, plunger-cylinder mechanism, flow-distributing valve and rear end cover 18 on the main shaft 28 successively.Front cover 1 and rear end cover 18 are separately fixed at the left and right sides of the pump housing 26.Swash plate-piston shoes mechanism comprises swash plate 3, backhaul dish 5, odd number piston shoes 4.Wherein, swash plate 3 left sides are connected by pin 2 with front cover 1, and right lateral surface is the inclined-plane.Along odd number piston shoes 4 circumferentially evenly are set, piston shoes 4 are hinged with plunger 6 in the backhaul dish 5.
Plunger-cylinder mechanism comprises cylinder body 19 and plunger 6, and cylinder body 19 endoporus have keyway, and cylinder body 19 is connected by spline 25 with main shaft 28.The anterior outer side surface of cylinder body 19 links to each other with the pump housing 26 by bearing 23, the rear outside face links to each other with rear end cover 18 by bearing 17, form suction cavity volume 20 between the cylinder body 19 and the pump housing 26, along the circumferential direction evenly be provided with the cylinder hole on the cylinder body 19, the cylinder hole is arranged vertically, covers the plunger bushing of being made by engineering plastics 7 in the cylinder hole, form plunger cavity 10, plunger 6 is arranged in the plunger cavity 10, plunger bushing 7 and plunger 6 Spielpassung, and plunger 6 can horizontally slip in plunger cavity 10.Piston shoes 4 numbers in plunger cavity 10 and the swash plate-piston shoes mechanism equate and the position corresponding, piston shoes 4 concave spherical surfaces in the bulb of plunger 6 and swash plate-piston shoes mechanism are hinged.
Be evenly equipped with several spring eyes on the circumferential position between cylinder hole and its endoporus, place pressure spring 21 and spring seat 22, uniform pressure spring 21 acts on ball pivot 29 by spring seat 22 in the spring eye, ball pivot 29 remakes and is used for backhaul dish 5, backhaul dish 5 is pressed on the piston shoes 4, and piston shoes 4 are offseted with swash plate 3 all the time.Cylinder body 19 endoporus have keyway, and cylinder body 19 is connected by spline 25 with main shaft 28; Cover plunger bushing 7 in the cylinder hole, form plunger cavity 10.Cylinder body 19 realizes radially and axially locating that by the sliding bearing 17 of big sliding bearing 23 on its periphery and afterbody cylinder body 19 is processed into one with flow-distributing valve mechanism.
Used " trunk piston set clearance automatic compensation device " patent (number of patent application: 200910243654.6) of having declared, outer surface at plunger bushing is provided with annular groove 8, cylinder hole periphery has several long and narrow diversion passages 9 that is connected with annular groove 8 vertically, and diversion passage 9 also is connected with plunger cavity 10.Press water can be guided to annular groove 8 places by flow through plunger cavity 10, diversion passage 9 of the public cavity volume of flow-distributing valve assembly.Plunger 6 is done linear reciprocating motion in the cylinder hole, when plunger 6 is in the setting-out stroke, in the plunger cavity 10 is high pressure water, high pressure water leads to the annular groove 8 of plunger bushing 7 peripheries, force plunger bushing 7 radially inwardly to produce the distortion of trace at annular groove 8 places, reduce the matching gap between plunger 6 and the plunger bushing 7, realize zero leakage or micro-leakage, reach good sealing effect; When plunger 6 suction strokes, in the cavity volume is low-pressure water, also be low-pressure water in the annular groove 8 of plunger bushing 7 peripheries, the pressure balance that is subjected to inside and outside the plunger bushing 7 returns to original shape, and the gap between plunger 6 and the plunger bushing 7 increases, frictional force reduces, thereby reduced the wearing and tearing of plunger 6, increased the life-span of trunk piston set, improved the mechanical efficiency of this pump simultaneously with plunger bushing 7.
Cylinder body in the present embodiment realizes axially and radial location that by the sliding bearing of big sliding bearing of periphery and cylinder body afterbody one is processed in cylinder body and flow-distributing valve mechanism.The flow-distributing valve assembly is evenly arranged in cylinder body afterbody (flow-distributing valve mechanism), and each plunger cavity is all corresponding with a cover flow-distributing valve assembly.
The flow-distributing valve structure comprises array flow-distributing valve assembly, plunger cavity 10, suction cavity volume 20, water sucking mouth 13, water outlet 14, rear end cover 18.The flow-distributing valve assembly is evenly arranged in cylinder body 19 afterbodys, each plunger cavity 10 all with the public cavity volume 32 corresponding connections of a cover flow-distributing valve assembly, every cover flow-distributing valve assembly comprises a suction valve 11 and a delivery valve 12.Suction cavity volume 20 and water sucking mouth 13 and suction valve 11 valve ports communicate, and water outlet 14 and delivery valve 12 valve ports communicate.
The working procedure of this inclined disc type valve flow high pressure pure water plunger pump is as described below: external impetus makes main shaft 28 rotations, and main shaft 28 drives cylinder body 19 by spline 25 and together rotates, plunger 6 and piston shoes 4 hinged and and then cylinder body 19 rotations.Pressure spring 21 is uniformly applied to active force on each piston shoes 4 by spring seat 22, ball pivot 29 and backhaul dish 5, piston shoes 4 are close on the swash plate 3 are all the time slided, plunger 6 is subjected to that actionless swash plate 3 is given the active force of piston shoes 4 and reciprocating in the plunger bushing 7 in being embedded in the cylinder hole simultaneously.When piston shoes 4 make progress the limit position slip from swash plate 3 limit inferior positions, plunger 6 is in the suction stroke, the spool of the delivery valve 12 in the flow-distributing valve assembly all is in closed condition, enclosed volume in the plunger cavity 10 increases simultaneously, water pressure reduces, when the hydraulic pressure in the plunger cavity 10 drops to a certain numerical value, in the flow-distributing valve assembly spool of suction valve 11 can because of the hydraulic pressure at 13 places, pump water sucking mouth greater than hydraulic pressure in the plunger cavity 10 and suction valve 11 inner spring active forces make a concerted effort be unlocked, water is entered in the water sucking mouth plunger cavity 10 that feed pressure is low again of suction valve 11 through suction cavity volume 20 by pump water sucking mouth 13, realizes water absorption course; When piston shoes 4 when downward limit position slides from the limes superiors position of swash plate 3, plunger 6 is in the setting-out stroke, the volume of plunger cavity 10 can reduce gradually simultaneously, the water pressure of the Sheng Gaoing spring force of gathering suction valve 11 springs in the flow-distributing valve assembly on the one hand cuts out suction valve 11 spools gradually, overcome the active force of delivery valve 12 inner springs in the flow-distributing valve assembly on the other hand and pump making a concerted effort of the mouth of a river 14 pressure, delivery valve 12 spools are opened, high pressure water in the plunger cavity 10 is discharged through the water outlet inflow pump water outlet 14 of delivery valve 12, realize the setting-out process.Rotate a circle when main shaft 28 drives cylinder bodies 19, each plunger 6 each suction, setting-out once, along with the continuous rotation of main shaft 28, each plunger 6 is also independently finished the action of suction, setting-out continuously, thereby makes the water pressure plunger pump proper functioning.
The present invention adopts flow-distributing valve to replace thrust plate, the suction valve 31 of flow-distributing valve and delivery valve 32 radial arrangement, or suction valve 31 axial arranged, delivery valve 32 radial arrangement.Rely on suction valve 31 and delivery valve 32 to realize suction, the draining function of pump successively with plunger cavity 10 break-makes, therefore do not have serious fretting wear problem, help to realize the high-pressure trend of pump.
Pump housing ante-chamber 30 has by the mouth of a river, pump housing ante-chamber 30 water storages.Pump housing back cavity, big sliding bearing 23 and cylinder body 19 latter half parts with form the suction cavity volume, the suction cavity volume communicates with water sucking mouth 13 on the rear end cover 18.
Front cover 1 in the present embodiment is connected with swash plate 3 by the pin 2 of circumferential arrangement, and cylinder body 19 is integral with flow-distributing valve mechanism, and cylinder body 19 endoporus have keyway, and cylinder body 19 is connected by spline 25 with main shaft 28.Plunger-cylinder body, flow-distributing valve mechanism are along with main shaft 28 rotates, and swash plate 3 does not rotate, cylinder body 19 swings of having avoided swash plate 3 rotation unbalance mass,s to cause.
Cylinder body 19 in the present embodiment is positioned in the pump housing 26 by the sliding bearing 17 of big sliding bearing 23 and afterbody.The big sliding bearing 23 on sliding bearing 27 on the main shaft 28 and cylinder body 19 peripheries and the sliding bearing 17 of afterbody have been alleviated the pump housing 26 swings that main shaft 28 flexural bucklings and cylinder body 19 swing actings in conjunction cause, make the plunger pump running steadily.
Flow-distributing valve replaces thrust plate, reduces a pair of crucial friction pair, and flow-distributing valve mechanism and cylinder body 19 are integral.Flow-distributing valve can reduce the wear resistance requirement of the filter precision and the material of system, and excellent sealing performance and suction performance are arranged, and helps to realize the high-pressure trend of inclined disc type pure water plunger pump.Suction valve 11, delivery valve 12 equal radial arrangement are in the cylinder body afterbody, and the valve port of suction valve 11 and delivery valve 12 is all along the radial opening of main shaft.With respect to embodiment three flow-distributing valve structure, dwindled the volume of cylinder body 19; Relatively and embodiment two flow-distributing valve structure, the water sucting cavity volume is big, is beneficial to suction.
Pump housing ante-chamber 30 is realized the water lubrication of piston shoes-swash plate friction pair, and has been alleviated the frictional heat effect by the mouth of a river 24 water fillings; The back cavity of the pump housing 26, big sliding bearing 23 and cylinder body 19 latter half parts with form suction cavity volume 20, suction cavity volume 20 communicates with water sucking mouth 13 on the rear end cover 18, helps plunger pump and absorbs water.
Plunger pump water sucking mouth 13 is realized high pressure sealing with water outlet 14 by rotation combination Sealing 15.The sliding bearing 17 of cylinder body 19 afterbodys is bearing radial force but also bear axial force not only, has effectively simplified the stressed situation of rotating seal 15, helps improving its life-span.
Embodiment two:
Structure in the present embodiment and embodiment one are basic identical, difference only is the water intake form difference of suction valve: in the present embodiment suction valve 11 and delivery valve 12 all along the radial arrangement of main shaft in cylinder body 19 afterbodys, but the valve port 31 of suction valve 11 opening vertically.With respect to embodiment one flow-distributing valve structure, when low-pressure water enters flow-distributing valve common cavity 32 from suction valve 11 valve ports 31, be not subjected to the centrifugal forces affect of cylinder body 19 rotations, soaking effect is better; With respect to embodiment three flow-distributing valve structure, cylinder body 19 volumes are less.
Embodiment three:
Structure in the present embodiment and embodiment one are basic identical, difference only is the setting type difference of suction valve: delivery valve 12 radial arrangement in the present embodiment, suction valve 11 is axial arranged in cylinder body 19 afterbodys, the valve port 31 of suction valve 11 is opening vertically, and valve port 31 directly communicates with water sucking mouth 13.With respect to embodiment one, when low-pressure water enters flow-distributing valve common cavity 38 from suction valve 11 valve ports 31, be not subjected to the centrifugal forces affect of cylinder body 19 rotations, soaking effect is better.

Claims (5)

1. inclined disc type valve flow high pressure pure water plunger pump is characterized in that: comprise the pump housing (26), be arranged on the main shaft (28) in the pump housing (26) and from left to right be installed in front cover (1), swash plate-piston shoes mechanism, ball pivot (29), plunger-cylinder mechanism, flow-distributing valve and rear end cover (18) on the main shaft (28) successively; Front cover (1) and rear end cover (18) are separately fixed at the left and right sides of the pump housing (26); Wherein:
Described swash plate-piston shoes mechanism comprises swash plate (3), backhaul dish (5) and piston shoes (4), swash plate (3) left side is connected with front cover (1), right lateral surface is the inclined-plane, backhaul dish (5) is installed in the outer side surface of ball pivot (29), piston shoes (4) circumferentially evenly distribute along backhaul dish (5), and the left side of piston shoes (4) contacts with the inclined-plane of swash plate (3);
Described plunger-cylinder mechanism comprises cylinder body (19), plunger (6) and plunger bushing (7), the endoporus of cylinder body (19) is connected by spline (25) with main shaft (28), the anterior outer side surface of cylinder body (19) links to each other with the pump housing (26) by bearing (23), the rear outside face links to each other with rear end cover (18) by bearing (17), form suction cavity volume (20) between the cylinder body (19) and the pump housing (26), along the circumferential direction evenly be provided with the cylinder hole on the cylinder body (19), the cylinder hole is arranged vertically, cover plunger bushing (7) in the cylinder hole, form plunger cavity (10), plunger (6) is arranged in the plunger cavity (10), plunger bushing (7) and plunger (6) Spielpassung, plunger (6) can horizontally slip in plunger cavity (10); Piston shoes (4) number in plunger cavity (10) and the swash plate-piston shoes mechanism equate and the position corresponding, the right-hand member of the piston shoes (4) in the left end of plunger (6) and swash plate-piston shoes mechanism is hinged; On cylinder body (19), along the circumferential direction also evenly be provided with spring eye, spring eye is arranged between the endoporus and cylinder hole of cylinder body, be provided with pressure spring (21) in the spring eye, pressure spring (21) is pressed in the right side of ball pivot (29) by spring seat (22), pressure spring (21) acts on ball pivot (29), ball pivot (29) remakes and is used for backhaul dish (5), and backhaul dish (5) is pressed on the piston shoes (4), and piston shoes (4) are offseted with swash plate (3) all the time;
Outer surface at described plunger bushing (7) is provided with annular groove (8), has the diversion passage (9) that is connected with annular groove (8) on the cylinder body (19) of cylinder hole periphery vertically, and diversion passage (9) communicates with plunger cavity (10);
Described flow-distributing valve is arranged in cylinder interior, number equates with plunger cavity (10), the right-hand member of each plunger cavity (10) all is connected with one group of flow-distributing valve, the water inlet of flow-distributing valve is connected with suction cavity volume (20) between the cylinder body (19) and the pump housing (26), and the common cavity of flow-distributing valve (32) is connected with plunger cavity (10); Rear end cover is provided with water sucking mouth (13) and water outlet (14), and water sucking mouth (13) are connected with suction cavity volume (20), and water outlet (14) is connected with the water outlet of flow-distributing valve.
2. inclined disc type valve flow high pressure pure water plunger pump according to claim 1, it is characterized in that: described flow-distributing valve comprises suction valve (11) and delivery valve (12), all radial arrangement is in cylinder body (19) for suction valve (11) and delivery valve (12), and the valve port (31) of suction valve (11) is along the radial opening of main shaft (28).
3. inclined disc type valve flow high pressure pure water plunger pump according to claim 1, it is characterized in that: described flow-distributing valve comprises suction valve (11) and delivery valve (12), all radial arrangement is in cylinder body (19) for suction valve (11) and delivery valve (12), and the valve port (31) of suction valve (11) is along the axially open of main shaft (28).
4. inclined disc type valve flow high pressure pure water plunger pump according to claim 1, it is characterized in that: described flow-distributing valve comprises suction valve (11) and delivery valve (12), delivery valve (12) radial arrangement, suction valve (11) is axial arranged, and the valve port (31) of suction valve (11) is along the axially open of main shaft (28).
5. according to claim 1 or claim 2 or claim 3 or the described inclined disc type valve flow high pressure pure water plunger pump of claim 4, it is characterized in that: the right side of the bearing (17) that is connected with rear end cover (18) at cylinder body (19) rear portion is provided with rotating seal component (15), realizes the sealing between high pressure pure water pump water outlet place's high pressure water and water sucking mouth low-pressure water.
CN 201010272410 2010-09-03 2010-09-03 Swash plate type valve distributing high-pressure pure water plunger pump CN101949374A (en)

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Cited By (6)

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CN102606378A (en) * 2012-03-21 2012-07-25 北京工业大学 Full water lubrication pass shaft type water hydraulic piston motor
CN102619715A (en) * 2012-04-26 2012-08-01 安徽理工大学 Balanced high-flow axial plunger pump
CN103629106A (en) * 2013-12-20 2014-03-12 青岛大学 Rotating sleeve type circumferential distribution device for reciprocating plunger pump
CN105804971A (en) * 2014-12-31 2016-07-27 华域三电汽车空调有限公司 Oscillating compressor and rotation preventing mechanism thereof
JP2017048689A (en) * 2015-08-31 2017-03-09 Kyb株式会社 Liquid pressure rotating machine
CN111043028A (en) * 2019-11-27 2020-04-21 合肥工业大学 Anti-overturning ultrahigh pressure-resistant high-speed axial plunger pump/motor cylinder

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Application publication date: 20110119