CN206785614U - A kind of opposed type plunger pump of plunger pump valve group and the application valve group - Google Patents

Abstract

The utility model discloses the opposed type plunger pump of a kind of plunger pump valve group and the application valve group, including valve chamber and opening/closing component, it is characterized in that：The opening/closing component include provided with passway and the synchronizing shaft for being fixedly connected on the valve plate of valve chamber inwall, being arranged in valve plate and be rotationally connected with valve chamber, it is radially fixed be matched with the rotary valve of valve plate in synchronizing shaft and sealing, the rotary valve drives rotation to realize sealing or conducting to passway by synchronizing shaft.The utility model is provided using synchronizing shaft to drive rotary valve to be turned on or sealed, and reduces the shock in opening-closing process, the opposed type plunger pump of a kind of plunger pump valve group to increase the service life and the application valve group.

Description

A kind of opposed type plunger pump of plunger pump valve group and the application valve group

Technical field

It the utility model is related to plunger pump part field, pair of more particularly to a kind of plunger pump valve group and the application valve group Put formula plunger pump.

Background technology

Plunger pump is typically all made up of power end and fluid end, and wherein power end drives bent axle to revolve by motor using belt Turn, then drive plunger reciprocating by bent axle；And disengaging valve group is configured with fluid end, valve group generally comprises to be coordinated in sealing Valve seat and valve element, wherein valve element liquid body pressure, which is realized, opens, then makes valve element again by the pressure of self gravitation or spring Fall after rise to valve seat.

China Patent Publication No. CN103615365A patent document discloses a kind of integrated valve type gas drive liquid plunger pump, bag Include low-pressure cylinder barrel, charged piston, drive end bearing bracket, rear end cap, pile-up valve, flow guiding head, airway tube, high pressure cylinder barrel, check valve, plunger with And pilot valve；Drive end bearing bracket, rear end cap are respectively arranged at low-pressure cylinder barrel both ends；Charged piston is contained in low-pressure cylinder barrel, its both ends It is separately installed with the plunger；Pile-up valve is arranged on drive end bearing bracket, and it is connected by airway tube with the flow guiding head on rear end cap；It is high Cylinder pressure cylinder is separately positioned on the end of drive end bearing bracket, rear end cap, is furnished with two check valves on each high pressure cylinder barrel.In above-mentioned technical proposal Check valve coordinate valve seat to realize the conducting or sealing to liquid by spherical valve core, in the course of the work, spherical valve core can not Disconnected ground causes to hit to valve seat, after some time, consolidating in the contact sealing surface meeting stockpiling liquid between valve seat and valve element Body impurity, and be damaged because of long-term hit, and causing sealing property to be between the two deteriorated, service life is short.

Utility model content

The purpose of this utility model is to provide a kind of plunger pump valve group, and rotary valve rotation and then reality are driven using synchronizing shaft Now the passway on valve plate is turned on or sealed, reduces the shock in opening-closing process, extends service life.

Above-mentioned technical purpose of the present utility model technical scheme is that：A kind of plunger pump valve group, Including valve chamber and opening/closing component, the opening/closing component include provided with passway and be fixedly connected on valve chamber inwall valve plate, It is arranged in valve plate and is rotationally connected with the synchronizing shaft of valve chamber, radially fixed is matched with the rotation of valve plate in synchronizing shaft and sealing Valve, the rotary valve drive rotation to realize sealing or conducting to passway by synchronizing shaft.

By using above-mentioned technical proposal, synchronizing shaft is rotated, synchronizing shaft can just drive and the rotation of its radially fixed connection Valve is rotated on valve plate, when rotary valve turn to passway and it is coupled logical when, just realize conducting, when rotary valve rotate During to sealing passway, then the flowing of liquid is cut off, make use of the rotation between rotary valve and valve plate to enter in opening-closing process Row matches somebody with somebody liquid, avoid in the course of the work valve element constantly valve seat can be caused to hit, reduce noise in the course of work and Wear extent between valve element and valve seat, when the impurity in liquid is stayed in valve plate surface, meeting will be miscellaneous in rotation process for rotary valve Matter is struck off, and the sealing surface between valve plate and rotary valve is not accumulated impurity particle, avoids impurity product of the prior art The problem of staying at sealing surface.

The utility model is further arranged to：The rotary valve includes integrally formed moving valve plate and sleeve, the dynamic valve Piece and valve plate blind-mate, the moving valve plate are provided with the breach being connected with passway, the sleeve lining with outside synchronizing shaft Wall is radially fixed.

By using above-mentioned technical proposal, when the breach of moving valve plate is connected with passway, it is achieved that to liquid Conducting, and when the face seal of moving valve plate is in passway, then the flowing of liquid is cut off, and moving valve plate is connected with sleeve Connect, so as to which moving valve plate can be driven around the center rotating of synchronizing shaft by synchronizing shaft.

The utility model is further arranged to：The sleeve lining is provided with the keyway being axially set in parallel with it, institute State synchronizing shaft outer wall and be provided with the connecting key for being embedded at keyway.

By using above-mentioned technical proposal, by the cooperation of keyway and connecting key, the footpath of sleeve and synchronizing shaft can be realized To fixation, so as to which when synchronizing shaft rotates, sleeve can makees the rotation around synchronizing shaft axial direction, in the course of the work, sleeve It will not be rotated by the thrust of liquid, it is ensured that the sealing of moving valve plate and valve plate coordinates in the course of the work.

The utility model is further arranged to：The breach side wall is provided with cutting edge with passway side wall.

By using above-mentioned technical proposal, breach side wall is set to be formed in moving valve plate rotation process with passway side wall One shearing force, and then shear action can be played to the fibrous material in liquid and impurity, avoid impurity from accumulating in valve Plate surface, the sealing property between moving valve plate and valve plate is improved, reduce abrasion between the two.

The utility model is further arranged to：Described synchronizing shaft one end is arranged in valve chamber end face and is connected with positioning shaft coupling Device, the positioning shaft coupling inwall are provided with spline.

, can be by synchronizing shaft and plunger pump using the spline for positioning shaft coupling and its inside by using above-mentioned technical proposal The bent axle of middle power end is connected, and makes bent axle during driving plunger is reciprocating while drives synchronizing shaft to rotate, makes Plunger pump presses through journey and can preferably coordinated in the opening-closing process of passway to allow the liquid to normally carry out to taking out for liquid Flowing, avoiding the rotation of rotary valve can mismatch with the reciprocating motion of plunger pump and cause liquid not to be pumped out.

The utility model is further arranged to：The rotary valve, which deviates from, is provided with spring, institute between valve plate side and valve chamber It is in be coaxially disposed that spring, which is stated, with rotary valve center.

By using above-mentioned technical proposal, one power towards valve plate is applied to rotary valve using spring, makes rotary valve The surface of valve plate can be closely fitted in, makes to realize that better seal coordinates between valve plate and rotary valve, and in synchronization In the rotation process of axle, rotary valve is successfully rotated on valve plate surface, avoid both from being closely fit with and cause Rotary valve can not be rotated on valve plate, make that certain displacement can be produced between rotary valve and valve plate.

The utility model is further arranged to：The opening/closing component is provided with two groups and two synchronizing shafts in coaxially connected, and two The group opening/closing component and valve chamber inwall form the first chamber being arranged in order along valve chamber length direction, second chamber and the Three chambers, it is provided with the second chamber and coordinates and formed the close of the first excessively stream chamber and the second excessively stream chamber with valve chamber inner wall sealing Sealing；The first chamber is located at the first excessively stream chamber side and is communicated with suction side body, and the first excessively stream chamber is provided with and suction side First excessively stream end body of body phase connection；3rd chamber is located at the second excessively stream chamber side and is communicated with outlet side body, and described second Excessively stream chamber is provided with the second excessively stream end body connected with outlet side body phase；The suction side body and the second excessively stream end body are by one of them Opening/closing component realized and is communicated or sealed, and the outlet side body and the first excessively stream end body are connected or close by the realization of another opening/closing component Envelope；Each valve plate is located at first, second excessively stream chamber side and is equipped with a passway.

By using above-mentioned technical proposal, coordinate first, second excessively stream chamber using two sets of opening/closing components and realize free of discontinuities Ground imbibition and two processes of discharge opeing, when synchronizing shaft drives the rotary valve in opening/closing component to rotate, suction side body and the second excessively stream End body phase connection carries out imbibition to liquid and stored, and at the same time the first excessively stream end body is connected with outlet side body phase to enable liquid It is enough to be discharged from the first excessively stream chamber；Again when synchronizing shaft driving rotary valve turns over 180 degree, passway of the rotary valve to side Seal and the passway of opposite side opened, suction side body and the first excessively stream end body phase connection is carried out imbibition to liquid and is stored, At the same time the second excessively stream end body is connected with outlet side body phase to allow the liquid to be discharged from the second excessively stream chamber, Jin Er In 360 degree of rotation processes of synchronizing shaft, liquid persistently can be sucked and discharged, and improve operating efficiency.

The utility model is further arranged to：O-ring seals are provided between synchronizing shaft and the valve chamber inwall.

By using above-mentioned technical proposal, the sealing property between synchronizing shaft and valve chamber is lifted using O-ring seals, Synchronizing shaft is set not leak liquid in rotation process.

Another object of the present utility model is to provide a kind of opposed type plunger pump, using same root bent axle come to two groups of keyings Valve group is controlled simultaneously, and coordinate two plungers driven by bent axle two excessively stream cavitys are produced respectively pressure changes Realize and continue imbibition and discharge opeing.

Above-mentioned technical purpose of the present utility model technical scheme is that：A kind of opposed type plunger Pump, including plunger pump valve group and power end, the plunger pump valve group include valve chamber and opening/closing component, and the opening/closing component includes Provided with passway and be fixedly connected on the valve plate of valve chamber inwall, be arranged in valve plate and be rotationally connected with valve chamber synchronizing shaft, Radially fixed to be matched with the rotary valve of valve plate in synchronizing shaft and sealing, the rotary valve drives rotation to realize to passage by synchronizing shaft The sealing or conducting of mouth；The opening/closing component is provided with two groups and two synchronizing shafts in coaxially connected, opening/closing component described in two groups with First chamber, second chamber and the 3rd chamber that the formation of valve chamber inwall is arranged in order along valve chamber length direction, described second It is provided with chamber and coordinates and formed the seal of the first excessively stream chamber and the second excessively stream chamber with valve chamber inner wall sealing；First chamber Room is located at the first excessively stream chamber side and is communicated with suction side body, and the first excessively stream chamber is provided with the first mistake connected with suction side body phase Flow end body；3rd chamber is located at the second excessively stream chamber side and is communicated with outlet side body, and the second excessively stream chamber is provided with and discharge Hold the second excessively stream end body of body phase connection；The suction side body is realized by one of opening/closing component with the second excessively stream end body and connected Or sealing, the outlet side body are realized by another opening/closing component with the first excessively stream end body and are communicated or sealed；Each valve plate A passway is equipped with positioned at first, second excessively stream chamber side；The power end include coaxially connected bent axle in synchronizing shaft, The motor of crank rotation is driven, is driven reciprocating by bent axle and is corresponded in two plungers being coaxially disposed, with plunger And connected respectively with the first excessively stream end body, the second excessively stream end body phase for the excessively stream cavity that plunger is worn, two excessively stream cavitys.

By using above-mentioned technical proposal, when motor driven crankshafts rotation, in the rotation process of bent axle, it will drive it In a plunger toward moving in its corresponding excessively stream cavity, and can also drive synchronizing shaft to rotate, so as to realize two excessively stream ends Body and outlet side body, the conversion of suction side body connected relation；Plunger can make one of excessively stream cavity produce a pressure, by liquid Body is neutralized in the excessively stream end body of outlet side body phase connection via it from the excessively stream cavity and discharged, and at the same time, suction side is known from experience Liquid is pumped into another excessively stream cavity by the excessively stream end body communicated therewith, so as to be produced to the plunger in the excessively stream cavity A raw thrust, and then the effect of supercharging is realized, meanwhile, also achieve continuously imbibition and discharge opeing.

In summary, the utility model has the advantages that：

One：With reference to the cutting edge on the moving valve plate that can be rotated, and moving valve plate breach side wall and passway side wall Cutting edge, in the presence of synchronizing shaft driving, moving valve plate can utilize two cutting knifes when realizing on and off to passway Piece plays dissection to form a shearing force to the fiber impurity in liquid, and the impurity avoided in liquid accumulates In valve plate, the sealing property between valve plate surface and moving valve plate is improved, while extends the sealing between moving valve plate and valve plate The service life in face；

Secondly：With reference to two groups of keying valve groups and two plungers, two excessively stream cavitys, realize continuously imbibition and Discharge opeing.

Brief description of the drawings

Fig. 1 is the suction side body of the present embodiment one and the schematic diagram of the second excessively stream end body phase conducting；

Fig. 2 is the suction side body of the present embodiment one and the schematic diagram of the first excessively stream end body phase conducting；

Fig. 3 is the top view that the power end of the present embodiment two connects with fluid end；

Fig. 4 is the side view of the present embodiment two；

Fig. 5 is the front view of the present embodiment two；

Fig. 6 is the partial sectional view of the power end of the present embodiment two；

Fig. 7 is the sectional view of the excessively stream inside cavity of the present embodiment two.

Reference：1st, valve chamber；11st, first chamber；12nd, second chamber；13rd, the 3rd chamber；2nd, opening/closing component；21、 Valve plate；211st, passway；22nd, synchronizing shaft；23rd, rotary valve；231st, moving valve plate；2311st, breach；232nd, sleeve；3rd, connecting key； 31st, keyway；4th, cutting edge；5th, shaft coupling is positioned；51st, spline；6th, spring；7th, seal；71st, the first excessively stream chamber；711st, first Excessively stream end body；72nd, the second excessively stream chamber；721st, the second excessively stream end body；8th, suction side body；9th, outlet side body；10th, O-ring seals； 14th, ring flange；15th, end cap；16th, bearing；17th, power end；18th, fluid end；19th, the port of export；20th, entrance point；24th, bent axle；25、 Motor；26th, plunger；27th, excessively stream cavity；28th, bellows barrier film；29th, limited post；291st, communication port；30th, fluid port.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

Embodiment one：

A kind of plunger pump valve group, shown in reference picture 1, including one be in hollow setting cuboid valve chamber 1；In valve chamber One end of 1 length direction is fixedly connected with a ring flange 14 for being used to connect power end of plunger pump；Deviate from flange in valve chamber 1 The one end of disk 14 has been bolted an end cap 15.

The center of valve chamber 1 is equipped with the synchronizing shaft 22 that an axial direction is set in parallel with the length direction of valve chamber 1, synchronous Realized and be rotatably assorted by bearing 16 with ring flange 14 and end cap 15 in the both ends of axle 22；The He of end cap 15 is inserted into synchronizing shaft 22 The end outer wall of ring flange 14 is embedded with O-ring seals 10；One end of synchronizing shaft 22 is arranged in ring flange 14 and coaxially connected There is one to be used to connect bent axle in power end of plunger pump（Do not indicated in figure）Positioning shaft coupling 5, positioning shaft coupling 5 inwall Provided with for realizing radially fixed spline 51 with bent axle, bent axle is set to be driven during driving plunger is reciprocating same Step axle 22 rotates.

It is located in synchronizing shaft 22 in valve chamber 1 and is equipped with opening/closing component respectively close to one end of end cap 15 and ring flange 14 2, opening/closing component 2 includes one piece of valve plate 21 being fixedly connected with the inwall of valve chamber 1, be provided with valve plate 21 in it is symmetrical and through Two passways 211 of the both ends of the surface of valve plate 21；It is respectively facing on the end face of ring flange 14 and end cap 15 and sets in two pieces of valve plates 21 There is one to be arranged in synchronizing shaft 22 and moving valve plate 231 in disk form, moving valve plate 231 is provided with a breach for running through its both ends of the surface 2311, breach 2311 can be connected with passway 211；The side wall of breach 2311 and the side wall of passway 211 are equipped with a cutting knife； A sleeve for being arranged in synchronizing shaft 22 232 is formed in the central integral of moving valve plate 231, one is provided with the inwall of sleeve 232 The individual keyway 31 being axially set in parallel with synchronizing shaft 22, it is provided with the outer wall of synchronizing shaft 22 and is embedded at keyway 31 and realizes and cover 232 radially fixed connecting keys 3 of cylinder；The inwall of sleeve 232 coordinates with the outer wall of synchronizing shaft 22 in sealing；Sleeve 232 is away from dynamic One end of valve block 231 is embedded at the side wall of valve chamber 1 and coordinated between the two in sealing；One is arranged with the outer wall of sleeve 232 With synchronizing shaft 22 in the spring 6 being coaxially disposed, the both ends of spring 6 are connected to end face and the valve pocket of moving valve plate 231 for individual axial direction The inwall of body 1.

The synchronizing shaft 22 of two groups of opening/closing components 2 is coaxially connected and will be separated into inside whole valve chamber 1 from ring flange 14 The first chamber 11 that is set gradually to end cap 15, the chamber 13 of second chamber 12 and the 3rd；It is located at second chamber 12 in synchronizing shaft 22 Interior one section is provided with a seal 7, and seal 7 is sheathed on the outer wall of synchronizing shaft 22 and axial both ends are axial along synchronizing shaft 22 Extend respectively to realize sealing in two valve plates 21, while the outer wall of seal 7 extends to the inwall and and valve chamber of valve chamber 1 1 inwall coordinates in sealing；Second chamber 12 has been separated into the first excessively stream chamber 71 and the second excessively stream chamber 72 by seal 7；In valve pocket The side of body 1 is provided with a first excessively stream end body 711 being connected with the first excessively stream chamber 71, is provided with the opposite side of valve chamber 1 One the second excessively stream end body 721 being connected with the second excessively stream chamber 72；It is located at the side of the first excessively stream chamber 71 in first chamber 11 to set There is a suction side body 8 that can be connected using passway 211 with the first excessively stream end body 711；In the 3rd chamber 13 positioned at the The side of two excessively stream chamber 72 is provided with an outlet side body 9 that can be connected using passway 211 with the second excessively stream end body 721；On After stating setting, the mistake of suction side body 8 and second can be realized using the passway 211 on the valve plate 21 of the side of ring flange 14 Stream end body 721 is connected；Outlet side body 9 and the can be realized using the passway 211 on the valve plate 21 of the side of end cap 15 One excessively stream end body 711 is connected.

The operation principle of the present embodiment is：As shown in Fig. 2 first chamber 11 is located at the right side of the 3rd chamber 13, the second mistake Stream chamber 72 is located at the upside of the first excessively stream chamber 71；Existing original state is set as that the passway 211 of the right side upper end of valve plate 21 is closed, under The passway 211 at end is opened, then suction side body 8 is connected with the first excessively stream end body 711, and liquid passes through successively at suction side body 8 Cross first chamber 11, the first excessively stream chamber 71 is flowed into the first excessively stream end body 711 and stored；Meanwhile the upper end of left side valve plate 21 Passway 211 open, the passway 211 of lower end is closed, then the second excessively stream end body 721 is connected with outlet side body 9, liquid from Second excessively stream end body 721 flows to outlet side body 9 and discharged by second chamber 12, the 3rd chamber 13.

As shown in figure 1, when the bent axle in power end of plunger pump（Do not indicated in figure）Synchronizing shaft 22 is driven to turn from above-mentioned state When crossing 180 degree, synchronizing shaft 22 will drive the moving valve plate 231 of the left and right sides to rotate together, the passway of the upper end of right side valve plate 21 211, which connect realization with breach 2311, is opened, and the passway 211 of lower end is closed, and now, liquid passes through first from suction side body 8 Chamber 11, the second excessively stream chamber 72 are flowed in the second excessively stream end body 721 and stored；At the same time, left side valve plate 21 lower end The realization that is connected with breach 2311 of passway 211 is opened, and the passway 211 of upper end closes, and now, liquid is from the first excessively stream end body 711 flow to outlet side body 9 and are discharged by the first excessively stream chamber 71, the 3rd chamber 13；In the lasting rotation of synchronizing shaft 22 Cheng Zhong, continuous imbibition and discharge opeing will be realized.

Embodiment two：

A kind of opposed type plunger pump, shown in reference picture 2-4, including the power end 17 and fluid end 18 being connected, plunger pump Valve group is arranged in fluid end 18；One outlet end 19 and entrance point have been respectively communicated with two side walls up and down of fluid end 18 20, the port of export 19 is connected with outlet side body 9, and entrance point 20 is connected with suction side body 8.

With reference to shown in Fig. 4, a central axial and synchronizing shaft 22 is equipped with inside power end 17 in the bent axle being coaxially disposed 24, the one end of bent axle 24 is arranged in power end 17 towards the side wall of fluid end 18 and realized with positioning shaft coupling 5 by spline 51 It is radially fixed；Bent axle 24 is arranged in another side wall of fluid end 18 and connected by belt transmission away from one end of fluid end 18 There is a motor 25；It is in be coaxially disposed and driven by bent axle 24 to be connected with two along the sliding of its length direction in power end 17 Plunger 26, two plungers 26 are divided into the both ends of power end 17；An excessively stream chamber has been respectively communicated with the both ends of power end 17 Body 27, excessively stream cavity 27 is moved back and forth for plunger 26, and the plunger 26 by moving back and forth is realized inside excessively stream cavity 27 Changed between pressure needed for vacuum and work.

With reference to shown in Fig. 7, it is fixedly connected with what an axial direction was set in parallel with plunger 26 in the inside of excessively stream cavity 27 Hollow limited post 29, some communication ports 291 with being connected inside excessively stream cavity 27 are provided with the side wall of limited post 29；Spacing The outer cover of post 29 is provided with a bellows barrier film 28, and bellows barrier film 28 is in capsule shape；Bellows barrier film 28 is made up of nitrile rubber；Capsule Formula barrier film 28, which realizes the hydraulic oil in the liquid working medium in excessively stream cavity 27 and limited post 29, to be separated, and plunger 26 can be Moved back and forth in limited post 29, and then realize that excessively stream cavity 27 changes between pressure needed for vacuum and work；Two mistakes Stream cavity 27 is respectively equipped with a fluid port 30 connected with one of excessively stream end body phase.Two fluid ports 30 pass through pipeline point It is not connected in the first excessively stream end body 711, the second excessively stream end body 721.

The operation principle of the present embodiment is：Shown in reference picture 3-7, excessively stream cavity A is located at excessively stream cavity B left side；Work as song When axle 24 drives plunger 26 from the right side toward left movement, meanwhile, bent axle 24 drives synchronizing shaft 22 to rotate, after rotation, the He of suction side body 8 Second excessively stream end body 721 is connected, and outlet side body 9 is connected with the first excessively stream end body 711；Plunger 26 is in excessively stream cavity A Bellows barrier film 28 applies an expansionary force, reaches an operating pressure in excessively stream cavity A, flows through the liquid in excessively stream cavity A First excessively stream end body 711, outlet side body 9, the port of export 19 are expelled to outside, and at the same time, excessively stream cavity B transfers shift to vacuum shape Liquid is pumped into excessively stream cavity B by state, suction side body 8 by entrance point 20 by the second excessively stream end body 721, utilizes excessively stream cavity B realizes that liquid storage acts on, and produces a convergent force to the bellows barrier film 28 at the end simultaneously, and then the plunger 26 of the other end is risen To the effect of a supercharging.

When bent axle 24 drives plunger 26 by moving from left to right, meanwhile, bent axle 24 drives synchronizing shaft 22 to rotate, and is turning After dynamic, suction side body 8 is connected with the first excessively stream end body 711, and outlet side body 9 is connected with the second excessively stream end body 721；Plunger 26 Apply an expansionary force to the bellows barrier film 28 in excessively stream cavity B, reach an operating pressure in excessively stream cavity B, make excessively stream chamber Liquid in body B flows through the second excessively stream end body 721, outlet side body 9, the port of export 19 and is expelled to outside, at the same time, excessively stream cavity A transfers shift to vacuum state, and liquid is pumped into excessively stream cavity A by suction side body 8 by entrance point 20 by the first excessively stream end body 711 In, realize that liquid storage acts on using excessively stream cavity A, and a convergent force is produced to the bellows barrier film 28 at the end simultaneously, so that it is right The plunger 26 of the other end plays the effect of a supercharging.

This specific embodiment is only that it is not to limitation of the present utility model, ability to explanation of the present utility model Field technique personnel can make the modification of no creative contribution to the present embodiment as needed after this specification is read, but As long as all protected in right of the present utility model by Patent Law.

Claims (9)

1. a kind of plunger pump valve group, including valve chamber（1）And opening/closing component（2）, it is characterized in that：The opening/closing component（2）Including Provided with passway（211）And it is fixedly connected on valve chamber（1）The valve plate of inwall（21）, be arranged in valve plate（21）And it is rotationally connected with Valve chamber（1）Synchronizing shaft（22）, it is radially fixed in synchronizing shaft（22）And sealing is matched with valve plate（21）Rotary valve（23）, institute State rotary valve（23）By synchronizing shaft（22）Rotation is driven to realize to passway（211）Sealing or conducting.

2. a kind of plunger pump valve group according to claim 1, it is characterized in that：The rotary valve（23）Including integrally formed Moving valve plate（231）And sleeve（232）, the moving valve plate（231）With valve plate（21）Blind-mate, the moving valve plate（231）If Have and passway（211）The breach being connected（2311）, the sleeve（232）Inwall and synchronizing shaft（22）Outer wall is radially solid It is fixed.

3. a kind of plunger pump valve group according to claim 2, it is characterized in that：The sleeve（232）Inwall is provided with and it The keyway being axially set in parallel（31）, the synchronizing shaft（22）Outer wall is provided with and is embedded at keyway（31）Connecting key（3）.

4. a kind of plunger pump valve group according to claim 2, it is characterized in that：The breach（2311）Side wall and passway （211）Side wall is provided with cutting edge（4）.

5. a kind of plunger pump valve group according to claim 1, it is characterized in that：The synchronizing shaft（22）One end is arranged in valve pocket Body（1）End face and it is connected with positioning shaft coupling（5）, the positioning shaft coupling（5）Inwall is provided with spline（51）.

6. a kind of plunger pump valve group according to claim 1 or 2, it is characterized in that：The rotary valve（23）Away from valve plate （21）Side and valve chamber（1）Between be provided with spring（6）, the spring（6）With rotary valve（23）Center is in be coaxially disposed.

7. a kind of plunger pump valve group according to claim 1, it is characterized in that：The opening/closing component（2）Provided with two groups and two Root synchronizing shaft（22）In coaxially connected, opening/closing component described in two groups（2）With valve chamber（1）Inwall is formed along valve chamber（1）Length The first chamber that direction is arranged in order（11）, second chamber（12）With the 3rd chamber（13）, the second chamber（12）Inside it is provided with With valve chamber（1）Inner wall sealing coordinates and forms the first excessively stream chamber（71）With the second excessively stream chamber（72）Seal（7）；Described One chamber（11）Positioned at the first excessively stream chamber（71）Side is communicated with suction side body（8）, the first excessively stream chamber（71）Provided with suction Enter to hold body（8）The first excessively stream end body being connected（711）；3rd chamber（13）Positioned at the second excessively stream chamber（72）Side connects There is outlet side body（9）, the second excessively stream chamber（72）Provided with outlet side body（9）The second excessively stream end body being connected（721）；Institute State suction side body（8）With the second excessively stream end body（721）By one of opening/closing component（2）Realization is communicated or sealed, the discharge Hold body（9）With the first excessively stream end body（711）By another opening/closing component（2）Realization is communicated or sealed；Each valve plate（21） Positioned at first, second excessively stream chamber（71,72）Side is equipped with a passway（211）.

8. a kind of plunger pump valve group according to claim 1, it is characterized in that：The synchronizing shaft（22）With valve chamber（1）It is interior O-ring seals are provided between wall（10）.

9. a kind of opposed type plunger pump, it is characterized in that：Including plunger pump valve group and power end, the plunger pump valve group includes valve pocket Body（1）And opening/closing component（2）, the opening/closing component（2）Including provided with passway（211）And it is fixedly connected on valve chamber（1）It is interior The valve plate of wall（21）, be arranged in valve plate（21）And it is rotationally connected with valve chamber（1）Synchronizing shaft（22）, it is radially fixed in synchronizing shaft （22）And sealing is matched with valve plate（21）Rotary valve（23）, the rotary valve（23）By synchronizing shaft（22）Drive rotation realization pair Passway（211）Sealing or conducting；The opening/closing component（2）Provided with two groups and two synchronizing shafts（22）In coaxially connected, two The group opening/closing component（2）With valve chamber（1）Inwall is formed along valve chamber（1）The first chamber that length direction is arranged in order （11）, second chamber（12）With the 3rd chamber（13）, the second chamber（12）Inside it is provided with and valve chamber（1）Inner wall sealing coordinates And form the first excessively stream chamber（71）With the second excessively stream chamber（72）Seal（7）；The first chamber（11）Positioned at the first excessively stream Chamber（71）Side is communicated with suction side body（8）, the first excessively stream chamber（71）Provided with suction side body（8）The first mistake being connected Flow end body（711）；3rd chamber（13）Positioned at the second excessively stream chamber（72）Side is communicated with outlet side body（9）, described second Excessively stream chamber（72）Provided with outlet side body（9）The second excessively stream end body being connected（721）；The suction side body（8）With the second mistake Flow end body（721）By one of opening/closing component（2）Realization is communicated or sealed, the outlet side body（9）With the first excessively stream end body （711）By another opening/closing component（2）Realization is communicated or sealed；Each valve plate（21）Positioned at first, second excessively stream chamber （71,72）Side is equipped with a passway（211）；The power end（17）Including coaxially connected in synchronizing shaft（22）Bent axle （24）, driving bent axle（24）The motor of rotation（25）, by bent axle（24）Drive reciprocating and in two posts being coaxially disposed Plug（26）With plunger（26）Correspond and supply plunger（26）The excessively stream cavity worn（27）, two excessively stream cavitys（27） Respectively with the first excessively stream end body（711）, the second excessively stream end body（721）It is connected.