CN102155370A - Pure water hydraulic through-shaft type spherical distribution axial plunger pump - Google Patents

Pure water hydraulic through-shaft type spherical distribution axial plunger pump Download PDF

Info

Publication number
CN102155370A
CN102155370A CN 201110077940 CN201110077940A CN102155370A CN 102155370 A CN102155370 A CN 102155370A CN 201110077940 CN201110077940 CN 201110077940 CN 201110077940 A CN201110077940 A CN 201110077940A CN 102155370 A CN102155370 A CN 102155370A
Authority
CN
China
Prior art keywords
plunger
cylinder
hole
piston shoes
cover
Prior art date
Application number
CN 201110077940
Other languages
Chinese (zh)
Inventor
周华
翟江
罗凯
金聪
杨华勇
Original Assignee
浙江大学
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 浙江大学 filed Critical 浙江大学
Priority to CN 201110077940 priority Critical patent/CN102155370A/en
Publication of CN102155370A publication Critical patent/CN102155370A/en

Links

Abstract

The invention discloses a pure water hydraulic through-shaft type spherical distribution axial plunger pump which comprises a housing, wherein a through shaft type structure is adopted, a drive main shaft is connected with a cylinder body through a spline, and the cylinder body is provided with odd plunger holes; a plunger ball head and a slipper ball socket in each plunger-slipper assembly form a slipper spherical hinge pair, and plungers are respectively arranged in the plunger holes of the cylinder body to form a plunger pair; one end of a spring arranged in a center hole of the cylinder body is used for pressing the cylinder body on a distribution plate through a blocking ring, the distribution plate is positioned on a rear end cover through the center hole and a positioning pin, and the end face of the cylinder body and the distribution plate form a distribution pair; and the other end of the spring is used for pressing a slipper in each plunger-slipper assembly on a tilting tray through a pressing rod and the like, the end face of the slipper and the surface of the tilting tray form a slipper pair, and the outer spherical surface of a spherical hinge and the inner ball socket surface of a return tray form a center spherical hinge pair. When the main shaft is driven to rotate, the pure water hydraulic through-shaft type spherical distribution axial plunger pump can ensure that the plungers reciprocate along the plunger holes of the cylinder body and realize suction and discharge processes of sea water through the action of the distribution plate.

Description

Pure water hydraulics shaft type sphere fluid-distributing axial plunger pump
Technical field
The present invention relates to a kind of dynamical element that in the pure water hydraulics drive technology, uses.
Background technique
Directly have advantages such as cleaning, pollution-free, no fire hazard as the pure water hydraulics drive technology of working medium with the natural water (containing seawater and fresh water) after filtering, in recent years, along with going deep into of the application of new engineering material, development of advanced manufacturing, pure water hydraulics transmission theoretical research, west advanced industrial country has made the pure water hydraulics drive technology walk out the laboratory, develop commercial prod, be widely used in fields such as food, papermaking, weaving, medical apparatus, fire-fighting, metallurgy, mining, atomic power factory, ocean development.And China begins to carry out the research work of pure water hydraulics drive technology aspect the beginning of the nineties from eighties of last century, but development speed is comparatively slow, and still amorphous products is invested market at present, and the pure water hydraulics key element still need rely on a large amount of imports.
Water hydraulic pump is the crucial dynamical element in the pure water hydraulics system, and its performance is determining the performance of whole pure water hydraulics system.Up to the present, abroad the water hydraulic pump that has developed is in the majority with the axial piston structure, mainly contains three kinds of structures:
First kind is oil-water separation valve distributing construction.This structure adopts the cone valve flow, and main friction pairs adopts oil (fat) lubricated, need take measures working medium water and lubricant oil (fat) are separated, and sealing configuration is comparatively complicated.This structure is the transitional technology that adopts during the initial stage in the pure water hydraulics technical development.
Second kind is fully water lubricating valve distributing construction.This structure is to grow up on the basis of first kind of structure, and main friction pairs directly adopts water lubrication, adopts the needs of the suitable high-pressure low-flow of this structure, but complex structure, suction capacity is relatively poor, spindle speed is restricted.
The third is a fully water lubricating valve plate distribution structure.This structure is carried out flow by the thrust plate end face, and main friction pairs directly adopts water lubrication.Representative products is the serial pure water hydraulics axial piston pump that Denmark DANFOSS company produces, and adopts semiaxis formula plane distributing construction, has floating disc on the cylinder body, and structure is comparatively complicated, and suction capacity is relatively poor.
Abroad, (patent No.: 6000316) announced a kind of axial piston pump, this pump is an oblique disk structure before the fully water lubricating semiaxis formula to U. S. Patent, and cylinder body is close to thrust plate by inserting dish, and suction capacity is restricted.Still unformed at present at home commercialization water hydraulic pump.Chinese patent (the patent No.: ZL00113140.0) announced a kind of plunger pump for low-viscosity fluid, this pump is a fully water lubricating semiaxis formula valve plate distribution structure, its plunger is a hollow and thin-walled wound packages structure, the pressure of attempting to form when compressing by plunger makes the plunger thin segment be the drum type resiliently deformable, thereby make die casting that the outer plunger surface of resin material and the effect that inboard wall of cylinder block forms more efficiently sealing be arranged, but actual effect is not seen report as yet.Chinese patent (patent No.: ZL03118632.7) announced a kind of axial piston water hydraulic pump, this pump adopts fully water lubricating valve distributing construction, and main shaft drives swash plate and rotates, and the cylinder body transfixion, structure is comparatively complicated, and difficulty of processing is bigger.(patent No.: ZL2004118632.7) announced a kind of aqueous medium axial piston pump, this pump adopts comparatively novel axle flow semiaxis formula structure to Chinese patent, but the cone structure of pintle, cylinder body is comparatively complicated, and manufacturability is relatively poor.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of pure water hydraulics shaft type sphere fluid-distributing axial plunger pump, and as working medium and lubricant medium, system provides high-pressure water to the natural water (containing seawater and fresh water) after it utilized and filters for pure water hydraulics.
In order to solve the problems of the technologies described above, the invention provides a kind of pure water hydraulics shaft type sphere fluid-distributing axial plunger pump, comprise the shell of forming by front cover, housing and rear end cover; Adopt the shaft type structure, the forward and backward axle journal of main shaft is rotatedly connected with front slide bearing that is positioned at the front cover center and the back sliding bearing that is positioned at the rear end cover center respectively, and main shaft is connected by spline with ball pivot with the cylinder body that is positioned at the housing inner chamber respectively;
Central axis along cylinder body is provided with the cylinder body center hole, is evenly equipped with the plunger hole of the odd number that parallels with the cylinder body central axis on the same circumference of cylinder body, and plunger hole is around the cylinder body center hole; Each plunger hole sets a cover plunger-slippery boots assembly, every cover plunger-slippery boots assembly is made up of plunger and piston shoes, end at each plunger is provided with bulb, and the ball-and-socket of bulb and piston shoes constitutes the piston shoes typed ball bearing pair, and plunger hole constitutes trunk piston set with placing the plunger in the plunger hole; Flow end face at cylinder body is provided with the flow window identical with the quantity of plunger hole, and each flow window is connected with 1 plunger hole one to one;
Ball-and-socket face in the central axis place of backhaul dish is provided with, on the same circumference of backhaul dish, be evenly equipped with circular hole that parallel with its central axis, identical with plunger hole quantity, the diameter of circular hole is greater than the little periphery of piston shoes and less than the big periphery of piston shoes, and each circular hole is enclosed within respectively on the little periphery of 1 piston shoes accordingly; The interior ball-and-socket face of backhaul dish and the outer spherical surface of ball pivot constitute the center typed ball bearing pair;
Place an end of the central spring of cylinder body center hole by back-up ring cylinder body to be pressed on the left side of thrust plate, thereby make the right side of thrust plate support rear end cover, thrust plate and rear end cover are fixedly linked; Cylinder body flow end face and thrust plate constitute sphere flow pair; The other end of central spring is pressed in each piston shoes end face on the swash plate by spring seat, depression bar, ball pivot and backhaul dish successively, thereby makes the left side of swash plate support front cover, and swash plate and front cover are fixedly linked; Piston shoes end face and swash surfaces constitute the piston shoes pair;
Be provided with the plunger center hole in the plunger, be provided with the plunger ball center hole in bulb, have the piston shoes center hole in piston shoes, plunger hole, plunger center hole, plunger ball center hole, piston shoes center hole and piston shoes are connected successively with the surface of contact of swash plate;
Be respectively equipped with pick trough and rhone in the thrust plate, on rear end cover, be respectively equipped with inlet channel and outlet flow; Pick trough one end periodically is connected with the flow window, the other end is connected with inlet channel; Rhone one end periodically is connected with the flow window, the other end is connected with outlet flow.
When drive main spindle was rotated, this structure can be so that plunger be reciprocating along the cylinder body plunger hole, and realized the suction process of seawater by the effect of thrust plate.
Improvement as pure water hydraulics shaft type sphere fluid-distributing axial plunger pump of the present invention: the number of plunger hole is 5,7,9 or 11.
Further improvement as pure water hydraulics shaft type sphere fluid-distributing axial plunger pump of the present invention: have spiral groove on front slide bearing, the back sliding bearing, made that the current of lubricated and cooling action can be fully mobile.
The implementation of piston shoes pair and piston shoes typed ball bearing pair: the friction surface of corrosion resistant metal material swash plate is through enhancement process, the matrix of the piston shoes of plunger-slippery boots assembly is a corrosion resistant metal, but evenly cover the last layer composite high-molecular material at end face, periphery and ball-and-socket face, the friction surface of corrosion resistant metal material swash plate, the sphere of plunger ball are through enhancement process.
The implementation of trunk piston set can have two kinds of structures: a kind of structure (as Fig. 1) is that plunger adopts corrosion resistant metal fully, and the cylindrical rubbing surface is through enhancement process, and the plunger hole of corrosion resistant metal cylinder body is pressed into the composite high-molecular material borehole jack; Another kind of structure (as Fig. 2) is that cylinder body adopts corrosion resistant metal fully, plunger hole inner headed face enhancement process, and plunger is matrix with the corrosion resistant metal, the cylindrical rubbing surface evenly covers one deck composite high-molecular material.
The implementation of flow pair: the flow end face of cylinder body and the abrasive end face of thrust plate are the sphere of same diameter, cylinder body flow end face adopts corrosion resistant metal fully, and through surface Hardening Treatment, thrust plate is matrix with the corrosion resistant metal, surface coverage last layer composite high-molecular material.
The implementation of center typed ball bearing pair can have two kinds of structures: a kind of structure (as Fig. 1) is that ball pivot adopts corrosion resistant metal fully, and outer spherical surface is through surface Hardening Treatment, and the backhaul dish is matrix with the corrosion resistant metal, interior ball-and-socket surface coverage last layer composite high-molecular material; Another kind of structure (as Fig. 3) is that the backhaul dish adopts corrosion resistant metal fully, and interior ball-and-socket face is through surface Hardening Treatment, and ball pivot is matrix with the corrosion resistant metal, and outer spherical surface evenly covers the last layer composite high-molecular material.
The beneficial effect that the present invention has is:
1. adopt the shaft type structure, simple in structure, number of spare parts is few, and reliability is better, and is close with oily hydraulic axial plunger pump structure, is convenient to axial piston pump specialized factory and produces in batches rapidly.
2. cylinder body flow end face and thrust plate constitute sphere flow pair, adopt above-mentioned sphere distributing construction, suction capacity is stronger, the secondary self-alignment ability of flow is better, the leakage rate that produces is less, be convenient to elevated pressures (14 ~ 16MPa) and higher rotation speed under move, make the pump of smaller size smaller and weight that bigger flow can be provided.
3. the main friction pairs pairing material is corrosion resistant metal and composite high-molecular material, can effectively avoid adhesive wear, corrosive wear under high speed, the heavily loaded situation, thereby improve working life directly in the work of seawater lubricating condition.
4. the main friction pairs vital part realizes that by special process corrosion resistant metal is a matrix, the tectal structure of macromolecular material is inlayed in the part, promptly guarantee the ability of the anti-seawater corrosion of part, made part possess good intensity, rigidity, toughness and good wear resistant friction reducing ability again.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.
Fig. 1 is the sectional structure schematic representation of pure water hydraulics shaft type sphere fluid-distributing axial plunger pump of the present invention;
Fig. 2 is right elevation and the left view after rear end cover 17 amplifies among Fig. 1;
Fig. 3 is the structural representation after cylinder body 14 amplifies among Fig. 1;
Fig. 4 is the left view after thrust plate 15 amplifies among Fig. 1;
Fig. 5 is the another kind of sectional structure schematic representation of pure water hydraulics shaft type sphere fluid-distributing axial plunger pump of the present invention;
Fig. 6 is the structural representation after the amplification of plunger-slippery boots assembly among Fig. 5.
Wherein: 1 flat key, 2 main shafts, 3 shaft seal covers, 4 envelopes, 5 front covers, 6 swash plates, 7 housings, 8 exhaust bolts, 9 backhaul dishes (ball-and-socket face in 91,92 circular holes, 9.1 composite high-molecular material coatings), 10 piston shoes (101 piston shoes center holes, 10.1 the composite high-molecular material coating), 11 plungers (110 bulbs, 111 plunger center holes, 112 plunger ball center holes, 11.1 composite high-molecular material coatings), 12 depression bars, 13 spring seats, 14 cylinder bodies (141 plunger holes, 142 cylinder body center holes, 143 flow windows, 14.1 composite high-molecular material coatings), 15 thrust plates (151 pick trough, 152 rhones, 153 water lubrication grooves, 15. 1 composite high-molecular material coatings), 16 locating studs, (the import of 171 pumps of 17 rear end covers, 172 delivery side of pump, 173 inlet channel, 174 outlet flow), 18 back sliding bearings, 19 back-up rings, 20 central spring, 21 ball pivots (21.1 composite high-molecular material coating), 22 locating studs, 23 front slide bearings.
Embodiment
Embodiment 1, Fig. 1 ~ Fig. 4 are in conjunction with having provided a kind of pure water hydraulics shaft type sphere fluid-distributing axial plunger pump, it is by main shaft 2, shell (being made up of front cover 5, housing 7 and rear end cover 17), cylinder body 14, plunger-slippery boots assembly (being made up of plunger 11 and piston shoes 10), swash plate 6, thrust plate 15, ball pivot 21, backhaul dish 9, central spring 20, formations such as front slide bearing 23, back sliding bearing 18, axle envelope 4 and shaft seal cover 3.Be provided with the exhaust bolt 8 with the intracavity inter-connection of housing 7 on housing 7, the effect of exhaust bolt 8 is to turn on when initial launch, thereby discharges air remaining in the housing 7.
Adopt the shaft type structure, promptly main shaft 2 runs through front cover 5, housing 7 and rear end cover 17 from left to right successively; On the main shaft 2 that is positioned at front cover 5 left sides, be provided with the flat key 1 that plays interconnect function with prime mover; Axle envelope 4(is set between shaft seal cover 3 and front cover 5 for example can selects skeleton axle envelope for use), promptly the shaft end seal of main shaft 2 relies on axle envelope 4 to finish; The preceding axle journal of main shaft 2 places the front slide bearing 23 that is positioned at front cover 5 centers, and the back axle journal of main shaft 2 places the back sliding bearing 18 that is positioned at rear end cover 17 centers, and promptly the front and back axle journal of main shaft 2 is rotatedly connected with front slide bearing 23 and back sliding bearing 18 respectively; Main shaft 2 links to each other with cylinder body 14 by spline, so main shaft 2 only bearing radial force and peripheral force when driving cylinder bodies 1 rotation, does not bear axial force.Main shaft 2 also links to each other with ball pivot 21 by spline.
Central axis along cylinder body 14 is provided with cylinder body center hole 142, is evenly equipped with the plunger hole 141 of the odd number that parallels with cylinder body 14 central axis on the same circumferential surface of cylinder body 14, and plunger hole 141 is around cylinder body center hole 142; Each plunger hole 141 sets a cover plunger-slippery boots assembly, and every cover plunger-slippery boots assembly is formed by 1 plunger 11 and 1 piston shoes 10; Be provided with bulb 110 in the end of each plunger 11, bulb 110 constitutes the piston shoes typed ball bearing pair with the ball-and-socket of piston shoes 10; 1 plunger 11 is set in each plunger hole 141, and plunger 11 constitutes trunk piston set with plunger hole 141.Flow end face at cylinder body 14 is provided with the flow window 143 identical with plunger hole 141 quantity, and each flow window 143 is connected with 1 plunger hole 141 one to one.Flow window 143 for example can be the oval hole.
Ball-and-socket face 91 in the central axis place of backhaul dish 9 is provided with is evenly equipped with the circular hole 92 of (promptly also for odd number) that parallel with its (backhaul dish 9) central axis and identical with plunger hole 141 quantity on backhaul dish 9 same circumference; The diameter of this circular hole 92 greater than the diameter of piston shoes 10 little peripheries and less than piston shoes 10 big peripheries diameter, each circular hole 92 is enclosed within respectively on the little periphery of 1 piston shoes 10 accordingly.The interior ball-and-socket face 91 of backhaul dish 9 constitutes the center typed ball bearing pair with the outer spherical surface of ball pivot 21.
In cylinder body center hole 142, set gradually depression bar 12, spring seat 13, central spring 20 and back-up ring 19 from left to right; Depression bar 12, spring seat 13, central spring 20 and back-up ring 19 all are set in the outer surface of main shaft 2; Central spring 20 is pressed on the left side of thrust plate 15 by the flow end face of back-up ring 19 with cylinder body 14, thereby makes the right side of thrust plate 15 support rear end cover 17.Be provided with locating stud 16 at rear end cover 17, thereby thrust plate 15 is implemented in fixing rear end cover 17 on by the size matching relationship of the boss outer round surface of set certainly center hole internal circular surfaces and rear end cover 17 and the locating stud 16 that is positioned on the rear end cover 17 on one's body; The flow end face of cylinder body 14 and thrust plate 15 constitute sphere flow pair simultaneously.Simultaneously, the left end of central spring 20 is pressed to swash plate 6 by the effect of spring seat 13, depression bar 12, ball pivot 21 and backhaul dish 9 with each piston shoes 10 successively, and the end face of piston shoes 10 is close on the surface of swash plate 6 all the time, thereby makes the left side of swash plate 6 support front cover 5.Front cover 5 is provided with locating stud 22, and size matching relationship and the locating stud 22 that be positioned at front cover 5 on of swash plate 6 by self outer round surface and housing 7 internal circular surfaces is fixing on front cover 5; Piston shoes 10 constitute the piston shoes pair with swash plate 6.
Be provided with plunger center hole 111 in the plunger 11, in bulb 110, be provided with plunger ball center hole 112, have piston shoes center hole 101 in piston shoes 10, plunger hole 141, plunger center hole 111, plunger ball center hole 112, piston shoes center hole 101 and piston shoes 10 are connected successively with the surface of contact of swash plate 6.Be respectively equipped with pick trough 151 and rhone 152 in the thrust plate 15, catchment and suction zones can be separated, this pick trough 151 and rhone 152 all are arranged to oval shape; Have several water lubrication grooves 153 on the pick trough 151, water lubrication groove 153 is connected the housing inner chamber with pick trough 151, can introduce current and cool off the flow pair.On rear end cover 17, be respectively equipped with import 172, delivery side of pump 171, inlet channel 173 and the outlet flow 174 of pump; The import 172 of pump is connected with inlet channel 173, and delivery side of pump 171 is connected with outlet flow 174.
Pick trough 151 1 ends on the thrust plate 15 periodically are connected (promptly with flow window 143, rotation along with cylinder body 14, during each flow window 143 and be connected with pick trough 151, the time and be not connected with pick trough 151), the other end is connected with inlet channel 173 on the rear end cover 17; Rhone 152 1 ends on the thrust plate 15 periodically are connected (promptly with flow window 143, rotation along with cylinder body 14, during each flow window 143 and be connected with rhone 152, the time and be not connected with rhone 152), the other end flows 174 roads with the outlet on the rear end cover 17 and is connected.
Front slide bearing 23, back sliding bearing 18 have the spiral groove of lubrication, have made that the current of lubricated and cooling action can be fully mobile.
Above-mentioned pure water hydraulics shaft type sphere fluid-distributing axial plunger pump suction water process is achieved in that main shaft 2 drives cylinder body 14 rotations, because central spring 20 makes the end face of piston shoes 10 be close to the upward slip of swash plate 6 surfaces all the time by the acting in conjunction of spring seat 13, depression bar 12, ball pivot 21 and backhaul dish 9, simultaneously also make plunger 11 in the plunger hole 141 of cylinder body, constantly move back and forth, thereby make the volume of plunger hole 141 constantly change, volume is realized suction greatly from little change, and volume is from the realization draining that diminishes greatly.When one of them plunger 11 moved to the limit on the left position left, it is maximum that the volume of corresponding plunger hole 141 reaches, and water absorption course finishes; The flow window 143 that communicate with this plunger hole 141 this moment is made this plunger hole 141 form sealing by thrust plate 15 complete hidings (that is, flow window 143 promptly is not connected with pick trough 151, is not connected with rhone 152 yet).Along with being rotated further of main shaft 2, this plunger 11 begins to move right, make the volume of this plunger hole 141 begin to reduce, the rhone 152 of flow window 143 that communicates with this plunger hole 141 and thrust plate 15 is communicated with then, thereby the water in this plunger hole 141 is extruded by plunger 11, arrive delivery side of pump 171 through the flow window 143 that communicates with plunger hole 141, the rhone 152 of thrust plate 15, the outlet flow 174 of rear end cover 17 successively, realized the drainage procedure of pump.When one of them plunger 11 moves right the limit on the right-right-hand limit position, it is minimum that the volume of corresponding plunger hole 141 reaches, drainage procedure finishes, and the flow window 143 that communicate with this plunger hole 141 this moment is formed sealing again by thrust plate 15 complete hidings in this plunger hole 141.Along with being rotated further of main shaft 2, these plunger 11 beginnings are to left movement, make the volume of this plunger hole 141 begin to increase, the pick trough 151 of flow window 143 that communicates with this plunger hole 141 and thrust plate 15 is communicated with then, water enters this plunger hole 141 through the inlet channel 173 of rear end cover 17, the pick trough 151 of thrust plate 15, the flow window 143 that communicates with this plunger hole 141 from the inlet 172 of pump, has realized the water absorption course of pump.Rotation along with main shaft 2, each plunger hole 141 is with continuous suction water, a plurality of plunger holes 141 are independently finished the suction water conservancy project separately by certain precedence and are done, each plunger hole 141 absorbs water from the import 171 of pump, the water of discharging is in the orderly stack of delivery side of pump 172, thereby discharges comparatively continuously current uniformly.
The present invention directly adopts water lubrication and cooling to be achieved in that the main friction pairs material all adopts the good composite high-molecular material of self-lubricating property and the corrosion resistant metal of process surface Hardening Treatment to match on the one hand, composite high-molecular material is for example selected compound PI material for use, corrosion resistant metal is for example selected stainless steel material for use, the surface Hardening Treatment here is meant the technological method that makes the corrosion resistant metal surface hardness be improved and do not reduce its corrosion resistance, for example surface low-temperature nitriding method; Then be lubricated on the other hand by initiatively introducing current.
The piston shoes pair can realize like this: the piston shoes 10 in plunger-slippery boots assembly are to be matrix with the corrosion resistant metal, evenly cover last layer composite high-molecular material 11.1 at its end face (i.e. the face that contacts with swash plate 6), interior ball-and-socket face (i.e. the face that contacts with plunger 11 bulbs 110), periphery (i.e. the face that contacts with ball-and-socket face 91 in the backhaul dish 9), bulb 110 surfaces of the friction surface of the swash plate 6 that the corrosion resistant metal material is made (i.e. the face that contacts with piston shoes 10 end faces), plunger 11 constitute the secondary and piston shoes typed ball bearing pair of piston shoes respectively through enhancement process; In drainage procedure, the high pressure water in the plunger hole 141 imports piston shoes typed ball bearing pair and piston shoes pair by plunger center hole 111, plunger ball center hole 112 and piston shoes center hole 101, plays lubricated and cooling action.
Trunk piston set can realize by two kinds of structures: one (as shown in figures 1 and 3) is: plunger 11 adopts corrosion resistant metal to make fully, the outer round surface of plunger 11 (i.e. the face that contacts with plunger hole 141) is through enhancement process, the plunger hole 141 of the cylinder body of making at corrosion resistant metal 14 is pressed into composite high-molecular material borehole jack 14.1, and plunger 11 is placed in this borehole jack 14.1.Its two (as shown in Figure 5 and Figure 6) is: plunger 11 is a matrix with the corrosion resistant metal, and the cylindrical rubbing surface of plunger 11 covers last layer composite high-molecular material 11.1, and the inner headed face of plunger hole 141 is through enhancement process.In addition, between the plunger hole 141 of cylinder body 14 and the plunger 11 certain clearance is arranged, high-pressure water flow in the drainage procedure in the plunger hole 141 can be by clearance leakage to the pump chamber (being the inner chamber of housing 7) of low pressure, played lubrication, simultaneously cylinder body, plunger have been played cooling action trunk piston set.
The flow pair can realize like this: the end face (i.e. the face that contacts with thrust plate 15) of the cylinder body 14 that the employing corrosion resistant metal is made is through surface Hardening Treatment; Thrust plate 15 is a matrix with the corrosion resistant metal, covers last layer composite high-molecular material 15.1 at thrust plate 15 outer surfaces.Thrust plate 15 has several water lubrication grooves 153 on pick trough 151, introducing current lubricates and cooling action secondary the rising of flow, thrust plate 15 rhones 152 are provided with several equally distributed baffles 154, are used to strengthen rigidity, reduce the distortion of thrust plate 15 drainages under high-pressure water flow.
The center typed ball bearing pair can realize by two kinds of structures: one (as shown in Figure 1) is: ball pivot 21 adopts corrosion resistant metal fully, and the outer spherical surface of ball pivot 21 (i.e. the face that contacts with ball-and-socket face in the backhaul dish 9) is through surface Hardening Treatment; Backhaul dish 9 is a matrix with the corrosion resistant metal, and the interior ball-and-socket surface of backhaul dish 9 (i.e. the face that contacts with ball pivot 21 outer spherical surfaces) covers last layer composite high-molecular material 9.1.Its two (as shown in Figure 5) is: backhaul dish 9 adopts corrosion resistant metal fully, and the interior ball-and-socket face of backhaul dish 9 is through surface Hardening Treatment; Ball pivot 21 is a matrix with the corrosion resistant metal, and the outer spherical surface of ball pivot 21 evenly covers last layer composite high-molecular material 21.1.
Through surface Hardening Treatment, front slide bearing 23 and back sliding bearing 18 integral body adopt composite high-molecular materials in the cylndrical surface at axle journal place, main shaft 2 front and back (i.e. the face that contacts with front slide bearing 23, back sliding bearing 18 respectively).Front slide bearing 24, back sliding bearing 18 all have spiral groove water guide groove, the endoceliac water of shell is introduced respectively in above-mentioned front slide bearing 24, the back sliding bearing 18, thereby played the effect that front slide bearing 24, back sliding bearing 18 are lubricated and cool off.
The main friction pairs pairing material of pure water hydraulics axial piston pump of the present invention is corrosion-resistant metallic material and composite high-molecular material, it is matrix that corresponding part adopts with the corrosion resistant metal, evenly cover the last layer composite high-molecular material, corrosion resistance, intensity, toughness and the rigidity of part had so both been guaranteed, what guaranteed main friction pairs again has a good tribological property under the water lubrication condition, effectively improved functional reliability and working life.
At last, it is also to be noted that what more than enumerate only is several specific embodiments of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.

Claims (9)

1. pure water hydraulics shaft type sphere fluid-distributing axial plunger pump is characterized in that: comprise the shell of being made up of front cover (5), housing (7) and rear end cover (17); Adopt the shaft type structure, the forward and backward axle journal of main shaft (2) is rotatedly connected with front slide bearing (23) that is positioned at front cover (5) center and the back sliding bearing (18) that is positioned at rear end cover (17) center respectively, and main shaft (2) is connected by spline with ball pivot (21) with the cylinder body (14) that is positioned at housing (7) inner chamber respectively;
Central axis along cylinder body (14) is provided with cylinder body center hole (142), be evenly equipped with the plunger hole (141) of the odd number that parallels with cylinder body (14) central axis on the same circumference of cylinder body (14), described plunger hole (141) is around cylinder body center hole (142); Each plunger hole (141) sets a cover plunger-slippery boots assembly, every cover plunger-slippery boots assembly is made up of plunger (11) and piston shoes (10), in the end of each plunger (11) bulb (110) is set, bulb (110) constitutes the piston shoes typed ball bearing pair with the ball-and-socket of piston shoes (10), and plunger hole (141) constitutes trunk piston set with placing the plunger (11) in the plunger hole (141); Flow end face at cylinder body (14) is provided with the flow window (143) identical with the quantity of plunger hole (141), and each flow window (143) is connected with 1 plunger hole (141) one to one;
Ball-and-socket face (91) in the central axis place of backhaul dish (9) is provided with, on the same circumference of backhaul dish (9), be evenly equipped with circular hole (92) that parallel with its central axis, identical with plunger hole (141) quantity, the diameter of described circular hole (92) is greater than the little periphery of piston shoes (10) and less than the big periphery of piston shoes (10), each circular hole (92) is enclosed within respectively on the little periphery of 1 piston shoes (10) accordingly; The interior ball-and-socket face (91) of backhaul dish (9) constitutes the center typed ball bearing pair with the outer spherical surface of ball pivot (21);
Place an end of the central spring (20) of described cylinder body center hole (142) cylinder body (14) to be pressed on the left side of thrust plate (15) by back-up ring (19), thereby rear end cover (17) is being supported in the right side that makes thrust plate (15), and thrust plate (15) is fixedly linked with rear end cover (17); Described cylinder body (14) flow end face and thrust plate (15) constitute sphere flow pair; The other end of described central spring (20) is pressed in each piston shoes (10) end face on the swash plate (6) by spring seat (13), depression bar (12), ball pivot (21) and backhaul dish (9) successively, thereby front cover (5) is being supported in the left side that makes swash plate (6), and swash plate (6) is fixedly linked with front cover (5); Piston shoes (10) end face and swash plate (6) surface constitute the piston shoes pair;
Be provided with plunger center hole (111) in the plunger (11), in bulb (110), be provided with plunger ball center hole (112), have piston shoes center hole (101) in piston shoes (10), described plunger hole (141), plunger center hole (111), plunger ball center hole (112), piston shoes center hole (101) and piston shoes (10) are connected successively with the surface of contact of swash plate (6);
Be respectively equipped with pick trough (151) and rhone (152) in the thrust plate (15), on rear end cover (17), be respectively equipped with inlet channel (173) and outlet flow (174); Described pick trough (151) one ends periodically are connected with flow window (143), the other end is connected with inlet channel (173); Described rhone (152) one ends periodically are connected with flow window (143), the other end is connected with outlet flow (174).
2. pure water hydraulics shaft type sphere fluid-distributing axial plunger pump according to claim 1 is characterized in that: the number of described plunger hole (141) is 5,7,9 or 11.
3. pure water hydraulics shaft type sphere fluid-distributing axial plunger pump according to claim 2 is characterized in that: the outer surface at described piston shoes (10) covers the composite high-molecular material layer; Swash plate (6) is made by corrosion resistant metal, and with the contacted surface of piston shoes (10) through enhancement process, the outer spherical surface of plunger (11) bulb (110) is through enhancement process.
4. pure water hydraulics shaft type sphere fluid-distributing axial plunger pump according to claim 3 is characterized in that: described plunger (11) adopts corrosion resistant metal to make, and the cylindrical rubbing surface of plunger (11) is through enhancement process; Cylinder body (14) adopts corrosion resistant metal to make, and in plunger hole (141) borehole jack that composite high-molecular material is made is set, and plunger (11) is positioned at described borehole jack.
5. pure water hydraulics shaft type sphere fluid-distributing axial plunger pump according to claim 3 is characterized in that: described cylinder body (14) adopts corrosion resistant metal to make, and the inner headed face of plunger hole (141) is through enhancement process; Described plunger (11) adopts corrosion resistant metal to make, at the cylindrical rubbing surface covering composite high-molecular material layer of described plunger (11).
6. according to claim 4 or 5 described pure water hydraulics shaft type sphere fluid-distributing axial plunger pumps, it is characterized in that: the abrasive end face of the flow end face of described cylinder body (14) and thrust plate (15) is the sphere that same diameter is coincide mutually, the flow end face of cylinder body (14) adopts corrosion resistant metal to make, and the flow end face of cylinder body (14) is through enhancement process; Described thrust plate (15) adopts corrosion resistant metal to make, at described thrust plate (15) surface coverage composite high-molecular material layer, have several water lubrication grooves (153) on the pick trough (151), its rhone (152) is provided with several equally distributed baffles (154).
7. pure water hydraulics shaft type sphere fluid-distributing axial plunger pump according to claim 6 is characterized in that: described ball pivot (21) adopts corrosion resistant metal to make, and the outer spherical surface of ball pivot (21) is through enhancement process; Described backhaul dish (9) adopts corrosion resistant metal to make, at the interior ball-and-socket surface coverage composite high-molecular material layer of described backhaul dish (9).
8. pure water hydraulics shaft type sphere fluid-distributing axial plunger pump according to claim 6 is characterized in that: described backhaul dish (9) adopts corrosion resistant metal to make, and the interior ball-and-socket face of backhaul dish (9) is through enhancement process; Described ball pivot (21) adopts corrosion resistant metal to make, and the outer spherical surface of ball pivot (21) covers the composite high-molecular material layer.
9. pure water hydraulics shaft type sphere fluid-distributing axial plunger pump according to claim 8, it is characterized in that: have spiral groove on described front slide bearing (23), the back sliding bearing (18), made that the current of lubricated and cooling action can be fully mobile.
CN 201110077940 2011-03-30 2011-03-30 Pure water hydraulic through-shaft type spherical distribution axial plunger pump CN102155370A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201110077940 CN102155370A (en) 2011-03-30 2011-03-30 Pure water hydraulic through-shaft type spherical distribution axial plunger pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201110077940 CN102155370A (en) 2011-03-30 2011-03-30 Pure water hydraulic through-shaft type spherical distribution axial plunger pump

Publications (1)

Publication Number Publication Date
CN102155370A true CN102155370A (en) 2011-08-17

Family

ID=44436997

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201110077940 CN102155370A (en) 2011-03-30 2011-03-30 Pure water hydraulic through-shaft type spherical distribution axial plunger pump

Country Status (1)

Country Link
CN (1) CN102155370A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102606378A (en) * 2012-03-21 2012-07-25 北京工业大学 Full water lubrication pass shaft type water hydraulic piston motor
CN102996387A (en) * 2011-09-15 2013-03-27 林德材料处理有限责任公司 Axial piston machine
CN103104477A (en) * 2013-01-22 2013-05-15 北京工业大学 Asymmetric valve plate for fixed pure water hydraulic axial plunger pump
CN103939312A (en) * 2014-04-25 2014-07-23 福州大学 Balanced type double-row large-displacement axial plunger pump
CN104343673A (en) * 2014-09-29 2015-02-11 北京航空航天大学 Low-pulsation pump source system based on odd number of plunger pumps
CN104863813A (en) * 2015-06-01 2015-08-26 安徽理工大学 Swash plate type axial plunger pump or motor pressing device
WO2016011898A1 (en) * 2014-07-21 2016-01-28 沃尔科技有限公司 Axial plunger type hydraulic pump
CN105587482A (en) * 2016-02-14 2016-05-18 付家全 Rotating flow distribution type multi-plunger reciprocating pump
CN105650042A (en) * 2016-03-28 2016-06-08 太原科技大学 Hydraulic transformer adopting combined type valve plate and hydraulic circuit of hydraulic transformer
CN106545462A (en) * 2015-09-22 2017-03-29 无锡市德美嘉机械科技有限公司 A kind of inclined disc type hydraulic plunger motor
CN107965449A (en) * 2017-12-28 2018-04-27 赛克思液压科技股份有限公司 A kind of structure for plunger pump anticreep cylinder
WO2020015518A1 (en) * 2018-07-18 2020-01-23 宁波合力机泵股份有限公司 Multi-spherical-surface connected vertical type reciprocation pump power end and water injection pump using same

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07189888A (en) * 1993-12-28 1995-07-28 Hitachi Constr Mach Co Ltd Hydraulic pump motor
DE19930411A1 (en) * 1998-07-03 2000-01-05 Komatsu Mfg Co Ltd Hydraulic pump of piston type
JP2000080977A (en) * 1998-09-07 2000-03-21 Hitachi Constr Mach Co Ltd Piston pump
CN1434209A (en) * 2003-02-21 2003-08-06 华中科技大学 Axial plunger type water hydraulic pump
CN2654897Y (en) * 2003-11-06 2004-11-10 浙江大学 Low friction wear pure water hydraulic axial plunger pump/motor
JP2005133647A (en) * 2003-10-30 2005-05-26 Ebara Corp Axial piston pump or motor
CN101694211A (en) * 2009-10-16 2010-04-14 华中科技大学 Port plate for plunger pump

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07189888A (en) * 1993-12-28 1995-07-28 Hitachi Constr Mach Co Ltd Hydraulic pump motor
DE19930411A1 (en) * 1998-07-03 2000-01-05 Komatsu Mfg Co Ltd Hydraulic pump of piston type
JP2000080977A (en) * 1998-09-07 2000-03-21 Hitachi Constr Mach Co Ltd Piston pump
CN1434209A (en) * 2003-02-21 2003-08-06 华中科技大学 Axial plunger type water hydraulic pump
JP2005133647A (en) * 2003-10-30 2005-05-26 Ebara Corp Axial piston pump or motor
CN2654897Y (en) * 2003-11-06 2004-11-10 浙江大学 Low friction wear pure water hydraulic axial plunger pump/motor
CN101694211A (en) * 2009-10-16 2010-04-14 华中科技大学 Port plate for plunger pump

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102996387A (en) * 2011-09-15 2013-03-27 林德材料处理有限责任公司 Axial piston machine
CN102606378A (en) * 2012-03-21 2012-07-25 北京工业大学 Full water lubrication pass shaft type water hydraulic piston motor
CN102606378B (en) * 2012-03-21 2014-11-26 北京工业大学 Full water lubrication pass shaft type water hydraulic piston motor
CN103104477A (en) * 2013-01-22 2013-05-15 北京工业大学 Asymmetric valve plate for fixed pure water hydraulic axial plunger pump
CN103939312A (en) * 2014-04-25 2014-07-23 福州大学 Balanced type double-row large-displacement axial plunger pump
WO2016011898A1 (en) * 2014-07-21 2016-01-28 沃尔科技有限公司 Axial plunger type hydraulic pump
CN104343673A (en) * 2014-09-29 2015-02-11 北京航空航天大学 Low-pulsation pump source system based on odd number of plunger pumps
CN104343673B (en) * 2014-09-29 2016-08-24 北京航空航天大学 Low pulse pump source system based on odd piston pump
CN104863813B (en) * 2015-06-01 2017-01-25 安徽理工大学 Swash plate type axial plunger pump or motor pressing device
CN104863813A (en) * 2015-06-01 2015-08-26 安徽理工大学 Swash plate type axial plunger pump or motor pressing device
CN106545462A (en) * 2015-09-22 2017-03-29 无锡市德美嘉机械科技有限公司 A kind of inclined disc type hydraulic plunger motor
CN105587482A (en) * 2016-02-14 2016-05-18 付家全 Rotating flow distribution type multi-plunger reciprocating pump
CN105650042A (en) * 2016-03-28 2016-06-08 太原科技大学 Hydraulic transformer adopting combined type valve plate and hydraulic circuit of hydraulic transformer
CN107965449A (en) * 2017-12-28 2018-04-27 赛克思液压科技股份有限公司 A kind of structure for plunger pump anticreep cylinder
CN107965449B (en) * 2017-12-28 2019-03-29 赛克思液压科技股份有限公司 A kind of structure for plunger pump anticreep cylinder
WO2020015518A1 (en) * 2018-07-18 2020-01-23 宁波合力机泵股份有限公司 Multi-spherical-surface connected vertical type reciprocation pump power end and water injection pump using same

Similar Documents

Publication Publication Date Title
EP0652370B1 (en) Variable displacement vane pump
CN204877940U (en) Fluid machinery and indirect heating equipment
US6895855B2 (en) Hydraulic motors and pumps with engineered surfaces
CN1289820C (en) Compressor
EP1007853A1 (en) Oil-free screw rotor apparatus
WO2000053925A1 (en) Rotary power unit
EP0896151B1 (en) Synthetic low friction piston for a hydraulic pump or motor
CN1040787C (en) Rotative compressor with integral blades and rotator
CN104791333B (en) A kind of rotary energy recovery device
CN104612956B (en) Variable quantity fully water lubricating axial piston water pump
CN102141022B (en) Double canted disk valve distribution axial plunger type water hydraulic pressure shielding pump
CN2705626Y (en) Five cylinder mud pump
EP2232068B1 (en) Radial cam-driven compressor and cam-driven compressor assemblies
CN104005924B (en) High-power radial plunger pump
CN101876302B (en) Multi-cylinder reciprocating pump
JP5519082B2 (en) Plunger water pump
JPS6441677A (en) Axial piston machine with piston formed as stepped piston
WO2018014472A1 (en) Two-dimensional tapered roller piston pump
CN104454420B (en) Swash plate rotary internal Flat valve axial plunger pump
CN1195159C (en) Axial plunger type water hydraulic pump
CA1254523A (en) Slant plate type hydraulic device
CN102926959B (en) A kind of swash plate plunger pump or motor
CN105317670B (en) Magnetic suspension sloping tray axial plunger piston pump
CN102630279A (en) Cooling structure for cylinder block and swash plate-type hydraulic device equipped with same
CN103850922B (en) There is the high pressure sea water Cylinder Block in Axial Piston Pump friction pair of bionic non-smooth surface

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C12 Rejection of a patent application after its publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20110817