CN202690344U - Full-water lubricating valve distributing plunger water pump - Google Patents

Full-water lubricating valve distributing plunger water pump Download PDF

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Publication number
CN202690344U
CN202690344U CN 201220246617 CN201220246617U CN202690344U CN 202690344 U CN202690344 U CN 202690344U CN 201220246617 CN201220246617 CN 201220246617 CN 201220246617 U CN201220246617 U CN 201220246617U CN 202690344 U CN202690344 U CN 202690344U
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China
Prior art keywords
valve
plunger
cavity
water
flow
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CN 201220246617
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Chinese (zh)
Inventor
刘银水
唐辉
吴德发
李东林
郭志恒
罗培东
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武汉华喜特种液压设备有限公司
华中科技大学
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Priority to CN 201220246617 priority Critical patent/CN202690344U/en
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Publication of CN202690344U publication Critical patent/CN202690344U/en

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Abstract

The utility model discloses a full-water lubricating valve distributing plunger water pump which comprises a pump body, a rotating unit, a support unit and a plunger distribution unit. The pump body comprises a cavity body, a water inlet and a water outlet, wherein the water inlet and the water outlet are communicated with the cavity body. The rotating unit comprises a rotating spindle with one end arranged in the cavity body of the pump body. The support unit comprises an axial support unit and a radial support unit. The plunger distribution unit comprises a distribution valve assembly and a plunger piston shoe assembly, wherein the rotating spindle rotates to drive the plunger piston shoe assembly to be in cyclical movement so as to drive a valve in the distribution valve assembly to be started and closed to enable fluid to flow into the cavity body from the water inlet or be discharged through the water outlet from the cavity body, and accordingly flow distribution is achieved. A spiral ditch is arranged on the peripheral surface of the rotating spindle matched with the radial support unit, and the pumping effect of the spiral ditch enables the fluid to flow in cavities at two end faces of the rotating spindle in circulating mode. The full-water lubricating valve distributing plunger water pump fully utilizes the space in a casing and the spindle, greatly improves the bearing capability of the spindle by means of the design of a radial sliding bearing and prolongs service life of a hydraulic pump.

Description

A kind of fully water lubricating valve flow plunger water pump

Technical field

The utility model relates to positive displacement hydraulic pamp technical field, is specifically related to a kind of valve flow plunger hydraulic pump.

Background technique

Along with the appearance of world energy sources crisis and the raising of people's environmental consciousness; and the particular physico-chemical characteristics that has of aqueous medium itself; so that the water hydraulic technology is in a lot of fields (such as underwater operation; rescue; food processing etc.) has the incomparable advantage of pressurized oil system; thereby so that the water hydraulic technology has obtained great attention, and obtained fast development.

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 determining that directly the performance of whole water hydraulic system is good and bad.The water hydraulic plunger pump of valve flow mainly contains following two kinds of structural types in the world at present:

The first is the oil-water separating valve distributing construction.Water Hydraulic Pump of in succession researching and developing such as U.S. Delaware university, Mitsubishi heavy industry and China Central China University of Science and Technology etc., this structure adopts the flow-distributing valve flow, main friction pairs (as at the bottom of plunger ball/piston shoes ball-and-socket, the piston shoes boots/swash plate, each class bearing etc.) all adopt oil (fat) lubricated, need to take measures working medium water and lubricant oil (fat) are separated, sealing configuration is comparatively complicated, the life-span of pump depends primarily on the life-span of seal ring, and the leakage of oil (fat) very easily causes the pollution of product and environment.This type of pump is a kind of technology transition at water hydraulic technical development initial stage, a temporary transient difficult problem that is used for solving the shortage of water lubrication friction pair material.

The second is fully water lubricating valve distributing construction.This structure is to grow up on the basis of the first structure, and main friction pairs directly adopts water lubrication, but owing to being subjected to structural limitations, force-bearing situation is more abominable, and lubricating condition is poor, the friction pair serious wear, and the life-span of pump can not be guaranteed.Such as the disclosed a kind of hydraulic pamp of patent documentation CN1434209A, its main shaft is the shaft type structure, the sliding support bearing at main shaft two ends is subjected to structural limitations, size is difficult to strengthen, radially bearing capacity is difficult to improve, thereby limited the increase (this pump swashplate angle only has 10 °, and the swashplate angle of general cam-type axial piston pump reaches more than 15 °) of swashplate angle, further limited the raising of this pump power density.The disclosed hydraulic pamp of patent documentation CN101949374A adopts the mode of structure of the static cylinder body rotation of swash plate, this solution the problem of swash plate dynamic unbalance, but because the flow-distributing valve in the cylinder body and the non-equilibrium state of plunger motion, cause cylinder body to have more serious dynamic unbalance problem, and it has increased by three pairs of friction pairs, especially the thrust slide bearing friction pair of cylinder body, reduced the reliability of hydraulic pamp, and the radial arrangement of flow-distributing valve, strengthened the radial dimension of hydraulic pamp, so that the volume mass of hydraulic pamp strengthens.

The model utility content

The purpose of this utility model is to provide a kind of fully water lubricating valve flow plunger hydraulic pump, it can realize the water lubrication of all friction pairs, avoided oil-water separation formula oil hydraulic pump owing to the inefficacy that seals and press water infiltration lubricant reservoir causes from structure, can guarantee under the rated pressure operating conditions, this pump has higher volumetric efficiency and power-mass ratio, reduce simultaneously the fretting wear of friction pair under the high-speed overload condition, improve the working life of pump.This pump suitable with seawater or fresh water as working medium, also suitable with other low viscosity fluids as working medium.

The valve flow plunger type fully water lubricating hydraulic pamp that the utility model provides comprises the pump main body, and this pump main body comprises cavity, hydraulic pamp water inlet and hydraulic pamp water outlet; Rotary unit, this pump rotary unit comprises rotary main shaft, and is arranged in this pump main body; Support unit, this pump support unit is arranged in this pump main body, this support unit comprises axially support unit and radial support unit, and the axially support Unit Design is slide thrust bearing or self-aligning thrust roller bearing, and the radial support Unit Design is radial sliding bearing; And the piston valving unit, this pump plunger flow cell layout is in this cylinder body, and this piston valving unit comprises flow-distributing valve assembly and plunger piston slippery boots assembly, and the flow-distributing valve assembly comprises delivery valve assembly and suction valve assembly;

Wherein, this plunger piston slippery boots assembly is arranged in this cavity, and this cavity is divided into separate pressure chamber and lubricating cavity, described delivery valve assembly communicates with described pressure chamber, described suction valve assembly communicates with described lubricating cavity, described rotary unit and described support unit all are arranged in the described lubricating cavity, and described lubricating cavity communicates with the hydraulic pamp water inlet, and described pressure chamber communicates with the hydraulic pamp water outlet;

This plunger piston slippery boots assembly moves back and forth under the drive of described rotary main shaft, so that described suction valve assembly and delivery valve assembly absorb water by hydraulic pamp water inlet and hydraulic pamp water outlet and the draining action, the hydraulic pamp water inlet communicates with lubricating cavity by runner simultaneously, carries water to provide fluid lubrication to described rotary unit and described support unit to lubricating cavity.

This rotary unit also comprises swash plate, return plate, center ball pivot and the retracting spring of being located at successively on the described rotary main shaft.Wherein said swash plate places in the large end hollow cavity of described rotary main shaft, fix with rotary main shaft by the pin connection, one side of described return plate contacts with described center ball pivot, the opposite side of described return plate contacts with described piston shoes, described center ball pivot places in the cylinder body center hole, by placing the effect of the retracting spring in the cylinder body center hole, described return plate is pressed in the bottom of described piston shoes on the surface of described swash plate, and then so that rotatablely moving of described rotary main shaft is delivered to plunger through described swash plate piston shoes, impel plunger to move reciprocatingly.

This support unit places in the described lubricating cavity, and described radial support unit adopts sliding bearing structure, and the sliding bearing stationary ring is arranged on the housing, and rotating ring is arranged at the large end outer circumferential face of described rotary main shaft.Described radial sliding bearing is used for the suffered radial force of supports main shaft, and described thrust-bearing is mainly used in the suffered axial force of supports main shaft.

Technique effect of the present utility model is embodied in following several aspect:

1. all friction pairs of this hydraulic pamp are lubricated by working medium water, reduced the volume of pump, inner all friction pairs of simultaneously whole hydraulic pamp are all directly cooled off by the working medium water that flows, so that the heat that produces in the pump work is directly taken away by working medium, guarantee the thermal equilibrium temperature that this pump is lower; Fully water lubricating makes this pump need not to regularly replace lubricant oil (fat), has simplified maintenance program, has reduced user cost, has solved simultaneously environment and contamination of products that lubricant oil (fat) may leak and cause, has the characteristics of environmental protection.

2. the large end of rotary main shaft arranges radial sliding bearing, radial sliding bearing takes full advantage of the outer circumferential face of the large end of main shaft, radial dimension is large, the ability of bearing load increases substantially, efficiently solve the serious friction wear problem that high-speed overload Water Under press pump trunk piston set occurs because lateral force is excessive, greatly improved the working life of hydraulic pamp, for increasing swashplate angle, improved the specific power of pump and created condition simultaneously.Radial sliding bearing places in the lubricating cavity, adopts fully water lubricating.

3. the water inlet of pump directly communicates with lubricating cavity, absorbs water from lubricating cavity by sucking flow-distributing valve, so that the water of lubricating cavity is in the pump circulation state, is conducive to the heat that friction pair produces is in time taken away, and has improved the cooling effect of pump.

4. the large end outer circumferential face of rotary main shaft is processed with spiral chute, pump action when utilizing the spiral chute rotation, so that the working medium in the lubricating cavity constantly circulates, greatly accelerated heat radiation and the cooling of support unit, efficiently solve the wear problem that support unit causes because of frictional heat.

5. flow-distributing valve structural type is flap type, is conducive to realize the high-pressure trend of pump.Adopt simultaneously the soft or hard combination, seat material is engineering plastics, and spool is corrosion resistant alloy, be conducive to improve seal pressure and friction resistant wearing and tearing ability and the anti-cavitation erosion ability of flow-distributing valve, reduce the impact of spool and valve seat, thereby improved the volumetric efficiency of pump, reduced vibration noise.

6. flow-distributing valve adopts integrated axial arranged mode, reduces the radial dimension of pump, alleviates the quality of pump, and simultaneously integrated arrangement is so that the replacing of flow-distributing valve and keep in repair has very conveniently reduced mean time between maintenance of pump.

7. the material of all friction pairs all adopts corrosion resistant alloy/engineering plastics pairing, has reduced the friction factor between the friction pair, has strengthened the antiwear property of friction pair, has improved mechanical efficiency and the working life of pump.

8. the piston shoes end face is the static pressure supported design, has effectively offset the contact of piston shoes end face and the swash surfaces overwhelming majority, has greatly improved piston shoes swash plate friction pair friction resistant wearing and tearing ability, reliability and the working life of having improved pump.

Description of drawings

In order to be illustrated more clearly in the technological scheme among the utility model embodiment, the accompanying drawing of required use was done simple the introduction during the below will describe embodiment.

Fig. 1 is that wherein Fig. 1 a is the operating mode of hydraulic pamp plunger cavity volume volume minimum according to the structural representation of the utility model embodiment's valve flow plunger type fully water lubricating hydraulic pamp, and Fig. 1 b is the operating mode of hydraulic pamp plunger cavity volume volume maximum;

Fig. 2 is the main shaft structure schematic diagram of the plunger type of valve flow shown in Fig. 1 fully water lubricating hydraulic pamp;

Fig. 3 is the plunger piston slippery boots assembly structural representation of the plunger type of valve flow shown in Fig. 1 fully water lubricating hydraulic pamp;

Fig. 4 is the flow-distributing valve modular construction schematic diagram of the plunger type of valve flow shown in Fig. 1 fully water lubricating hydraulic pamp.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described.Need to prove; embodiment only is for exemplary explanation the utility model; for those of ordinary skill in the art; under the prerequisite of not paying creative work, obtain other flexible programs according to these embodiments' of the present utility model technological scheme and all belong to protection domain of the present utility model.

According to the structural representation of the utility model embodiment's valve flow plunger type fully water lubricating hydraulic pamp as shown in Figure 1.This hydraulic pamp comprises pump main body, rotary unit, support unit and piston valving unit.

Wherein, the hydraulic pamp main body comprises cavity and hydraulic pamp water inlet and hydraulic pamp water outlet.Rotary unit comprises rotary main shaft 1, swash plate 8, return plate 10 and ball pivot 9 and retracting spring 12.Support unit comprises axially support unit 6 and radial support unit 7.The piston valving unit mainly comprises plunger piston slippery boots assembly 11, suction valve assembly 21 and delivery valve assembly 20.Plunger piston slippery boots assembly 11 is located in the cavity, and cavity is divided into separate pressure chamber 18 and lubricating cavity 26, suction valve assembly 21 communicates with lubricating cavity 26, delivery valve assembly 20 communicates with pressure chamber 18, and rotary unit and support unit are located in this lubricating cavity 26 and through runner 23 and are pumped into mouth of a river fluid communication with this.

As shown in Figure 1, the pump main body is combined by rear end cover 15, cylinder body 13, housing 5 and front cover 3.Wherein an end of cylinder body 13 connects housing 5, and the other end connects rear end cover 15; One end of housing 5 connects cylinder body 13, and the other end connects front cover 3.Cavity in rear end cover 15, cylinder body 13, housing 5 and the front cover 3 has consisted of above-mentioned cavity jointly.Wherein, the cavity between cylinder body 13, housing 5 and the front cover 3 has consisted of lubricating cavity 26, and the cavity between cylinder body 13 and the rear end cover 15 has consisted of pressure chamber 18.Rotary main shaft 1, axially support unit 6, radial support unit 7, swash plate 8, return plate 10, ball pivot 9 and retracting spring 12 all are located in the lubricating cavity 26.Centered by rotary main shaft 1, be distributed with a plurality of piston valvings unit (be generally 5~9, concrete quantity requires to determine according to the difference of different Environmental Conditions to hydraulic pamp flow pulsation) along same even circumferential.The below will describe hydraulic pamp concrete structure and working procedure in detail.

Rear end cover 15 lower end surfaces are processed with two tapped holes and equally distributed 12 unthreaded holes vertically, two tapped holes are respectively water inlet and the water outlet of hydraulic pamp, unthreaded hole then is the bolt connecting hole of rear end cover 15 and cylinder body 13, the upper-end surface is processed with annular through-flow groove 14 and through flow hole 16, is communicated with water outlet and water inlet respectively.

The flow-distributing valve assembly as shown in Figure 4, the left side is suction valve assembly, the right side is the delivery valve assembly.Suction valve assembly is followed successively by suction valve valve seat 27, suction valve limited ring 28, inhalation valve spring 29, suction valve spool 30 from left to right, suction valve is through-flow ring 31, suction valve repair ring 32.Suction valve is through-flow, and ring 31 also plays the guiding of suction valve spool 30 and the guide rod effect of inhalation valve spring 29 simultaneously.The delivery valve assembly is followed successively by delivery valve valve seat 33, delivery valve spring 34, delivery valve spool 35, delivery valve limited ring 36 from left to right, delivery valve is through-flow ring 37 and delivery valve repair ring 38.Delivery valve is through-flow, and ring 37 also plays the guiding of delivery valve spool 35 and the guide rod effect of delivery valve spring 34 simultaneously.Wherein the entrance of suction valve assembly communicates with the lubricating cavity 26 of water pump, the lubricating cavity 26 of water pump communicates with the water inlet of hydraulic pamp by runner 23, the outlet of suction valve communicates with the entrance of delivery valve, and the outlet of delivery valve communicates by the through-flow groove 14 of annular and hydraulic pamp water outlet.

The flow-distributing valve assembly adopts axial arranged, has reduced the radial dimension of hydraulic pamp, has improved the power-mass ratio of hydraulic pamp.Flow-distributing valve structural type adopts flap type, adopts simultaneously the soft or hard pairing, and seat material is PEEK, spool is titanium alloy, and compact structure has not only improved the reliability of sealing, reduce simultaneously the Strike note between spool and the valve seat, thereby reduced the overall noise of hydraulic pamp.Spool adopts titanium alloy, and stainless steel has the advantages that hardness is high, density is little relatively, has therefore improved anti-cavitation erosion ability, be conducive to simultaneously reduce the quality of spool, improve the response characteristic of flow-distributing valve, reduce the lag time of flow-distributing valve, thereby improve the volumetric efficiency of hydraulic pamp.

Be processed with runner 23 on the cylinder body 13, the hydraulic pamp water inlet is communicated with lubricating cavity 26.Cylinder body 13 1 ends are processed with the plunger hole identical with plunger vertically, and the embedded PEEK of plunger hole is with the plunger 39 formation trunk piston set of piston shoes plunger assembly.Cylinder body 13 the other ends are processed with the flow-distributing valve valve opening vertically, and the entrance of extrusion valve opening communicates with the outlet of plunger hole and suction valve.The cylinder body two ends all are processed with center hole, and the left end center hole is mounting base and the pilot hole of retracting spring 12 and center ball pivot 9, and the right-hand member center hole is communicated with the water inlet of hydraulic pamp.

Plunger piston slippery boots assembly as shown in Figure 3, plunger piston slippery boots assembly comprises piston shoes 39 and plunger 40, be processed with bulb on the plunger 40 of plunger piston slippery boots assembly, be processed with ball-and-socket on the piston shoes 39, plunger ball matches with the piston shoes ball-and-socket, make the generation plastic deformation of piston shoes ball-and-socket outer wall and be connected the formation typed ball bearing pair with plunger ball by rolling process.The plunger center is processed with elongated hole, the piston shoes center is processed with aperture, the piston shoes end face is processed with annular sealing strip, the design of plunger elongated hole and piston shoes central small hole and ring packing band structure so that plunger when extruding stroke, the press water of plunger cavity can be communicated with the piston shoes end face by aperture, the formation static pressure supports, and has greatly reduced the direct contact force of piston shoes end face and swash surfaces, efficiently solves the fretting wear problem of piston shoes end face and swash plate.

Rotary main shaft as shown in Figure 2, main shaft structure is multidiameter shaft, and an end is large end hollow shaft, holds greatly and is furnished with swash plate 8 in the hollow cavity, swash plate 8 is fixing with main shaft 1 by pin 24, swash plate is transition fit with hollow inwall then circumferentially.The effect of return plate 10 by center ball pivot 9 and retracting spring 12 is pressed on the end face of the piston shoes 39 in the plunger piston slippery boots assembly on the swash surfaces, forms the swash plate piston shoes secondary.The large end outer circumferential face of main shaft and sliding bearing (as shown in Figure 3) consist of sliding pair, the large end outer circumferential face of main shaft is processed with spiral chute, when main shaft rotates, the spiral fluted pump action is so that the lubricated water circulation in the lubricating cavity 26 is mobile, be conducive to strengthen heat radiation and the cooling of lubricating cavity inner support unit, solve the high temperature wear phenomenon that the support unit friction pair causes because of excess Temperature.Radially be processed with the opening of twice criss-crossing on the main shaft, opening has strengthened the negotiability of water in the lubricating cavity, and the water in the lubricating cavity can constantly be circulated.Axially support unit 6 is preferably self-aligning thrust roller bearing, and the outer ring of self-aligning thrust roller bearing is fixed on the housing 5, and inner ring is fixed on the rotary main shaft 1, is bearing roller between the Internal and external cycle.

The working procedure of this valve flow plunger type fully water lubricating hydraulic pamp is achieved in that rotary main shaft 1 drives swash plate 8 rotations, retracting spring 12 on average is applied to acting force of the spring on each piston shoes by center ball pivot 9 and return plate 10, all the time be close to the end face that guarantees piston shoes 39 on the surface of swash plate 8 and slide, plunger 40 is subject to the active force of swash plate by piston shoes, so that plunger 40 is constantly reciprocating in the plunger hole of cylinder body 13.When swash plate 8 is minimum (as shown in Figure 1a) the position setting in motion of plunger cavity volume along limit position, the suction valve spool 30 of suction valve assembly 21 and the delivery valve spool 35 of delivery valve assembly 20 all are in closed condition, and this moment, plunger 40 was in the state that moves downward limit position.Piston shoes 39 are under the impacting force effect of return plate 10, driving plunger 40 moves upward, the volume of the plunger cavity of sealing increases gradually, pressure drop, when plunger cavity pressure drop during to certain value, during greater than the making a concerted effort of the pressure in the plunger cavity and inhalation valve spring active force, open by suction valve spool 30 because of the pressure of entrance for suction valve, water enters the suction valve entrance by the hydraulic pamp water inlet and flows in the plunger cavity again, realizes the suction action.When swash plate is plunger cavity volume when maximum from arriving shown in Fig. 1 b the position after limit position turns over 180 ° as shown in Figure 1a, this moment, plunger 40 was in the state that moves upward to limit position.Rotary main shaft 1 continues rotation, piston shoes 39 are subject to the active force of swash plate 8, promoting plunger 40 moves downward, the volume of plunger cavity reduces gradually, the pressure of plunger cavity raises gradually, and when plunger cavity pressure was elevated to certain value, suction valve was made a concerted effort greater than the pressure of suction valve entrance because of the pressure in the plunger cavity and acting force of the spring, suction valve spool 30 is closed, and this moment, the water of hydraulic pamp water inlet no longer entered in the plunger cavity.When the pressure of plunger cavity continues to be elevated to certain value, the pressure of plunger cavity will overcome the active force of delivery valve spring and the pressure of hydraulic pamp water outlet, delivery valve spool 35 is opened, made the high pressure water in the plunger cavity flow out the hydraulic pamp water outlet through the delivery valve water outlet, realize the draining action.When rotary main shaft 1 rotates a circle, each plunger suction and draining are respectively carried out once, along with the continuous rotation of rotary main shaft, each plunger also continuously the complete independently suction move with draining, thereby make the continuous output flow of hydraulic pamp.In the process of rotary main shaft rotating 360 degrees, the pump action when utilizing the spiral chute rotation so that the working medium in the lubricating cavity constantly circulates, strengthens cooling and the thermolysis of the friction pair in the lubricating cavity.Simultaneously, radial sliding bearing 7 produces the dynamic pressure supporting effect by the rotation of main shaft.When plunger 40 carries out drainage, press water in the plunger cavity flows into plunger ball and piston shoes ball-and-socket by plunger center elongated hole, typed ball bearing pair is played support and lubrication, press water flows into the piston shoes end face by the piston shoes central small hole simultaneously, provides fluid support and cooling action to piston shoes.

Abovely carried out corresponding introduction for a preferred embodiment of the present utility model.Need to prove, above embodiment can have multiple modification.Such as, can remove the PEEK injection molding to the cylinder body plunger hole, but PEEK is embedded in the plunger cylinder surface, be beneficial to safeguard and change, reduce process complexity.In addition, can also improve the linkage structure of plunger piston slippery boots assembly, such as the structure that the structure of piston shoes bag plunger can be made into plunger bag piston shoes, with ball-and-socket in the plunger end processing, piston shoes processing bulb; Also can not use the technique of roll extrusion, plunger or piston shoes are made structure of split etc.

Claims (10)

1. fully water lubricating valve flow plunger water pump comprises:
The pump main body, it comprises cavity, reaches the water inlet and the water outlet that communicate with this cavity;
Rotary unit, it comprises that an end is arranged at the interior rotary main shaft (1) of cavity of this pump main body;
Support unit, it is arranged on the cavity inner wall of this pump main body, comprises axially support unit (6) and radial support unit (7), when being respectively applied to provide rotary main shaft (1) in cavity, to rotate axially with the support that makes progress of footpath;
And piston valving unit, be arranged in the pump main body, it comprises flow-distributing valve assembly and plunger piston slippery boots assembly, rotary main shaft on the described rotary unit (1) rotarily drive described plunger piston slippery boots assembly cyclical movement, thereby the periodicity that drives valve in the described flow-distributing valve assembly opens and closes, make fluid periodically flow into cavity or in cavity, discharge the realization flow from water outlet from water inlet;
It is characterized in that, described rotary main shaft (1) offers spiral grooves at the outer circumferential face that cooperates with described radial support unit (7), and when described rotary main shaft rotation, fluid can circulate along rotary main shaft (1) by this spiral grooves.
2. fully water lubricating valve flow plunger water pump according to claim 1, it is characterized in that, described rotary main shaft (1) is multidiameter shaft, the center that wherein is arranged on the large end in the cavity has groove, should cooperate with described radial support unit (7) by large end outer circumferential face, described spiral grooves is opened on the described large end outer circumferential face.
3. fully water lubricating valve flow plunger water pump according to claim 2, it is characterized in that, described rotary unit also comprises swash plate (8), return plate (10), center ball pivot (9) and retracting spring (12), wherein, described swash plate (8) is coaxial to be placed in the central channel of described rotary main shaft (1), and be fixedly connected with this rotary main shaft (1), described return plate (10) center and described center ball pivot (9) are hinged, this return plate (10) card week upwards is connected with a plurality of described plunger piston slippery boots assemblies, described retracting spring (12) is connected on the described center ball pivot (9), described rotary main shaft (1) drives described swash plate (8) when rotation and presses down successively each plunger piston slippery boots assembly, and this retracting spring (12) promotes described return plate (10) and drives successively the described plunger piston slippery boots assembly that is pressed down and reset.
4. described fully water lubricating valve flow plunger water pump one of according to claim 1-3, it is characterized in that, described pump main body comprises cylinder body (13), housing (5), rear end cover (15) and front cover (3), wherein, described cylinder body (13) is positioned at pump main body lower end, described housing (5) is set on it, described rear end cover (15) and front cover (3) are separately positioned on cylinder body (13) and housing (5) end, and the cavity that forms between this rear end cover (15), cylinder body (13), housing (5) and the front cover (3) consists of described cavity.
5. described fully water lubricating valve flow plunger water pump one of according to claim 1-3, it is characterized in that, described plunger piston slippery boots assembly comprises piston shoes (39) and plunger (40), wherein, described piston shoes (39) are arranged on the described return plate (10), described plunger (40) is connected with described piston shoes (39), described cylinder body (13) is processed with the plunger hole that cooperates with plunger vertically on the end face relative with described return plate (10), described plunger (40) to-and-fro motion in plunger hole under piston shoes (39) drive.
6. fully water lubricating valve flow plunger water pump according to claim 5 is characterized in that, described plunger (40) end is processed with bulb or ball-and-socket, is correspondingly provided with ball-and-socket or the bulb that matches on the piston shoes (39) that are connected with this end, forms typed ball bearing pair.
7. fully water lubricating valve flow plunger water pump according to claim 6, it is characterized in that, described cylinder body (13) has axial bore on the relative other end, it is communicated with corresponding plunger hole, described flow-distributing valve assembly is arranged in this axial bore, this flow-distributing valve assembly comprises delivery valve (20) and suction valve (21), the outlet of this suction valve (21) communicates with the entrance of delivery valve (20), when moving, described plunger (40) changes the plunger hole internal pressure in plunger hole, impel delivery valve (20) or suction valve (21) to open, realize the cavity inner fluid is extruded or from water inlet fluid is pressed in the cavity from water outlet.
8. fully water lubricating valve flow plunger water pump according to claim 7, it is characterized in that, described cavity comprises separate pressure chamber and lubricating cavity, the entrance of described suction valve communicates with the lubricating cavity of water pump (26), lubricating cavity (26) communicates with water inlet by the runner (23) on the cylinder body (13), described delivery valve entrance communicates with described pressure chamber, the outlet of described delivery valve (20) communicates by annular through-flow groove (14) and the water outlet on the rear end cover (15), and described rotary unit and support unit all are arranged in the described lubricating cavity (26).
9. according to claim 7 or 8 described fully water lubricating valve flow plunger water pumps, it is characterized in that, described suction valve (21) comprises the suction valve valve seat (27) with valve opening, one end places the upper suction valve limited ring (28) that forms valve pocket of this suction valve valve seat (27), cooperate the suction valve spool (30) that forms valve port with the valve opening of this suction valve valve seat (27), be sleeved on the inhalation valve spring (29) on the suction valve spool (30), be arranged on the through-flow ring of suction valve (31) of suction valve limited ring (28) the other end, and the suction valve repair ring (32) that is communicated with the through-flow ring of described suction valve (31);
Described delivery valve (20) comprises the delivery valve valve seat (33) with valve opening, one end places the delivery valve limited ring (36) on this delivery valve valve seat (33), cooperate the delivery valve spool (35) that forms valve port with the valve opening of this delivery valve valve seat (33), be sleeved on the delivery valve spring (34) on this delivery valve spool (35), be arranged on the through-flow ring of delivery valve (37) of delivery valve limited ring (36) the other end, and the delivery valve repair ring 38 that is communicated with the through-flow ring of described delivery valve (37).
10. fully water lubricating valve flow plunger water pump according to claim 9 is characterized in that, described radial support unit is sliding bearing, and its stationary ring cooperates with housing (5) inwall, and rotating ring cooperates with the outer circumferential face of the large end of described rotary main shaft (1).
CN 201220246617 2012-05-29 2012-05-29 Full-water lubricating valve distributing plunger water pump CN202690344U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102734109A (en) * 2012-05-29 2012-10-17 武汉华喜特种液压设备有限公司 Fully water-lubricated valve distribution plunger pump
CN103644113A (en) * 2013-12-20 2014-03-19 青岛大学 End type flow distribution device of direct-actuated cylindrical guide groove cam mechanism for reciprocating plunger pump
CN104929886A (en) * 2015-06-01 2015-09-23 吴家集 Swing disc type axial plunger pump
CN105715474A (en) * 2016-01-27 2016-06-29 河北工程大学 Plunger hydraulic pump

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102734109A (en) * 2012-05-29 2012-10-17 武汉华喜特种液压设备有限公司 Fully water-lubricated valve distribution plunger pump
CN102734109B (en) * 2012-05-29 2015-05-20 武汉华喜特种液压设备有限公司 Fully water-lubricated valve distribution plunger pump
CN103644113A (en) * 2013-12-20 2014-03-19 青岛大学 End type flow distribution device of direct-actuated cylindrical guide groove cam mechanism for reciprocating plunger pump
CN104929886A (en) * 2015-06-01 2015-09-23 吴家集 Swing disc type axial plunger pump
CN105715474A (en) * 2016-01-27 2016-06-29 河北工程大学 Plunger hydraulic pump

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