CN104214090B - An integral structure of a gear pump and a jet flow valve - Google Patents
An integral structure of a gear pump and a jet flow valve Download PDFInfo
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- CN104214090B CN104214090B CN201410388119.0A CN201410388119A CN104214090B CN 104214090 B CN104214090 B CN 104214090B CN 201410388119 A CN201410388119 A CN 201410388119A CN 104214090 B CN104214090 B CN 104214090B
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Abstract
The invention relates to an integral structure of a gear pump and a jet flow valve. The structure comprises a pump body. A holding chamber is formed in the pump body. A jet flow valve is arranged in the holding chamber. The jet flow valve comprises a valve plug, a valve body and a transition plate, wherein the valve plug is arranged in a cavity inside the valve body, and the transition plate is fixed to the upper end of the valve body and in contact with the outer end face of the pump body for connecting the pump body and the valve body. The holding chamber is communicated with a main oil inlet and a main oil outlet of the valve body. The holding chamber is further communicated with an oil outlet of the pump and a high pressure oil line on the pump body. The high pressure hydraulic oil enters the holding chamber through the high pressure oil line and flows out through the oil outlet of the pump after passing through the valve body. The structure combines the pump and the valve, so that the response speed is 30 % faster than that of the conventional hydraulic system, and the overall weight is lighter than that of the traditional pump and valve. The pump and the valve are combined as an integral structure, so that the structure is convenient to install in the hydraulic system, thereby reducing the cost.
Description
Technical field
The present invention relates to the combination field of hydraulic pump and valve, more particularly to the integrative-structure of a kind of gear pump and fluid valve.
Background technology
In the hydraulic system of prior art, hydraulic pump is generally the structure of split, hydraulic pump and pilot operated valve device point with pilot operated valve device
The not independent space for occupying hydraulic system, both are connected by a high-pressure oil pipe.
Such as, Chinese patent《Lifting hydraulic system and the machinery of the lifting with the hydraulic system》, publication number：
102092662A, discloses a kind of lifting hydraulic system and the machinery of the lifting with the hydraulic system, wherein, lifting hydraulic system
Including fuel tank;Elevating ram, its in-line and drain line are linked to node；Variable delivery hydraulic pump/motor, including：Cross oil pocket,
It is communicated between node and fuel tank；Rotor, was arranged in oil pocket；Power transmission shaft, its first end is connected with rotor；Flywheel, connection
In the second end of power transmission shaft, when elevating ram oil extraction, variable delivery hydraulic pump/motor is stored up as hydraulic motor task driven flywheel
Can, when elevating ram oil-feed, variable delivery hydraulic pump/motor is driven to elevating ram from flywheel and conveys liquid as hydraulic pump works
Force feed.
Pump in the patented technology is Split type structure with valve, in hoisting system, the isolating construction of pump and valve, to hydraulic pressure system
For system, high-pressure oil pipe is connected between pump and valve, equivalent to the flowing time that high pressure liquid force feed is increased between pump and valve, prolonged
The reaction time of hydraulic system being grown, the integral pressure of system is higher, also, pump structure detached with valve, also additionally to use
Oil path block and electronics valve member, install inconvenient.
In view of drawbacks described above, creator of the present invention passes through prolonged research and practice obtains this creation finally.
The content of the invention
The technical problem to be solved is the present situation for prior art, there is provided a kind of low cost of manufacture, weight
Gently, system synchronization is good, the combination pump valve of the gear pump that pump valve fit structure is integrated and quick fluid valve disjunctor.
The present invention solve the technical scheme that adopted of above-mentioned technical problem for：
The present invention provides the integrative-structure of a kind of gear pump and fluid valve, and it includes a pump housing, arranges in the above-mentioned pump housing
One accommodating cavity, arranges jet injection valve in above-mentioned accommodating cavity, above-mentioned fluid valve includes valve element, valve body and rebound, wherein,
Above-mentioned valve element is arranged in above-mentioned valve inner cavity, and above-mentioned rebound is fixed on above-mentioned valve body
End, and contact with pump housing outer face, the pump housing to be connected with valve body；
The main oil-in and main oil-out insertion of above-mentioned accommodating cavity with valve body, above-mentioned accommodating cavity also goes out with pump respectively
Hydraulic fluid port is connected with the high-pressure oil passage on the pump housing, and high pressure liquid force feed Jing above-mentioned high-pressure oil passage enters accommodating cavity, and after valve body,
Flow out from the oil-out of pump.
Further, a point difference hole is set on above-mentioned valve element, and it makes above-mentioned valve element upper and lower side produce pressure reduction；
Control hole and spill port are set on above-mentioned rebound, and above-mentioned point difference hole, valve element upper cavity and a control hole is passed through
It is logical；
When hydraulic valve is opened, above-mentioned the dividing of hydraulic oil Jing in above-mentioned working connection differs from hole, valve element upper cavity, control
Hole and spill port form oil circuit；In above-mentioned control bore closure, above-mentioned valve element is pressed oil in the high pressure liquid of valve element upper cavity
The lower motion of effect, closed jet valve.
Further, the oil return circuit of fluid valve is set in pump body, in above-mentioned oil return circuit connection transition block
Oil back chamber on spill port and the pump housing, above-mentioned oil back chamber is connected with the spill port on the pump housing.
Further, above-mentioned oil return circuit includes first level section, vertical section and the second horizontal segment, above-mentioned three sections of cavitys
Insertion is sequentially connected with, the hydraulic oil that Jing above-mentioned spill port flows out circulates successively by said sequence；Above-mentioned first level section
One end and spill port insertion, one end and the oil back chamber insertion of the second horizontal segment.
Further, also including a valve pocket, above-mentioned valve pocket is arranged in above-mentioned valve body, and above-mentioned valve element is arranged on
In the valve pocket stated, above-mentioned valve pocket sidepiece arranges an at least oilhole.
Further, above-mentioned rebound upper end connects a magnetic valve, during above-mentioned electromagnetism valve events, opens or closes
The control hole stated.
Further, above-mentioned valve element top arranges the spring retention chamber of opening, and above-mentioned spring retention chamber lower end is arranged
One point of poor chamber, and connect with it；
An above-mentioned point difference Kong Yufen differences chamber communicates, and high pressure liquid is pressed oil from above-mentioned point difference hole after flowing into, through above-mentioned
After dividing difference chamber and spring retention chamber, the loop from above-mentioned rebound is flowed out.
Further, the first pressure reduction face is set in the bottom of above-mentioned valve element, it is produced on valve element when fluid valve is opened
The pressure reduction of lower surface；
Sealing surface is set in above-mentioned valve element bottom, above-mentioned sealing surface connects in jet valve breakdown with above-mentioned valve pocket
Touch.
Further, above-mentioned oil return circuit is a groove, and it is opened on the inner surface of the pump housing, from above-mentioned transition block
Spill port extend in the oil back chamber of the pump housing.
Further, a valve element accommodating cavity is set in above-mentioned valve pocket, to accommodate above-mentioned valve element；
Second pressure reduction face is set in the inner chamber of above-mentioned valve pocket, and the internal diameter at the second above-mentioned pressure reduction face is more than above-mentioned
The internal diameter of valve element accommodating cavity；When fluid valve is opened, above-mentioned the first pressure reduction face and the second pressure reduction face produces valve element upper and lower end face
Pressure reduction, under above-mentioned valve element lateral pressure be more than upper lateral pressure.
Compared with prior art the beneficial effects of the present invention is：After the present invention is combined the pump housing with quick fluid valve
Pump valve combining structure, is combined using the fluid valve with rapid action with gear pump, internally arranges the hydraulic circuit being connected,
The more conventional hydraulic system of reaction speed fast 30%,
Pump is about 54kg, weight of this product integrated pump valve structure than traditional gear pump and valve with the isolating construction weight of valve
Measure light 40kg or so；Unloaded pressure 3-5MPa, heavy-load start instantaneous pressure 25MPa, heavy duty work pressure 19-22MPa, eliminate liquid
The moment of pressure system starts pressure, and heavily loaded maximum working pressure is at half than original system maximum pressure, extends lifetime of system；Use
The hydraulic tube of a piece 3.5m reduces flow dynamic loss, and hydraulic lifting power foot, lifting is rapid, and system pressure is low, extends system
In the life-span, reduce fuel；Weight, reduces cost are reduced using a set of filter, valve group, rotary shaft, a suspension bracket, will
The components such as gear pump, valve, oil pipe are installed successively, and pitch time 3-4 hour platform/car greatlys save installation time, are saved 3 hours
Left and right, reduces process complexity；One start hydraulic pressure whole system is while stress, the pressure caused by the power of lifting valve, pipe, joint
Power, direct economic loss is caused to pump power takeoff and system into load, the serious curtailment service life of gear pump, to reduce liquid
The consumption of force feed, reduces the pressure of gear pump idle running, improves gear pump, oil pipe, the life-span of valve associated components.
Also, the fluid valve in the present invention drives valve element to transport up and down by the fluid pressure differential of control valve element upper and lower side
It is dynamic, complete opening and closing action；Hydraulic valve of the present invention is swift in response, and is active in one's movements, it is not necessary to the action of conventional pilot valves
Journey.
Because the break-make of the magnetic valve being connected with fluid valve is easily controlled, effect of the fluid valve in point difference hole and control hole
Under, rapid action can be realized；The hydraulic oil that there is certain flow rate in difference chamber and spring retention chamber is divided to be hindered by transition block
Every, it is rapidly returned to, the hydraulic oil of return is superimposed with the hydraulic oil of flow forward, and in point difference chamber and spring retention chamber pulse is formed
Hydraulic pressure, also, move back and forth in point difference chamber and spring retention chamber, pulse hydraulic is produced, and finally impact dividing in valve element
The bottom in difference chamber, valve element falls after rise rapidly.The pressure of the 1MPa in dividing difference chamber and spring retention chamber can rapidly block working connection
In 20MPa pressure, realize the big pressure of little Stress control.Therefore, the fluid valve in the present invention can be realized under high pressure
Rapid reciprocating action control.
Description of the drawings
Fig. 1 is that the present invention faces the schematic diagram of structure first；
Fig. 2 is backsight structural representation of the present invention；
Fig. 3 is side structure schematic view of the present invention；
Fig. 4 is present invention looks up structural representation of the present invention；
Fig. 5 is that the present invention looks up the schematic diagram of structure second；
Fig. 6 is dimensional structure diagram of the present invention；
Fig. 7 is the cross section structure diagram of the fluid valve of the present invention；
Fig. 8 is the side structure schematic view of fast valve of the invention；
Fig. 9 is the cross section structure diagram of valve element of the present invention；
Figure 10 is the cross section structure diagram of valve pocket of the present invention；
Figure 11 is the cross section structure diagram of valve body of the present invention；
Figure 12 is the positive structure diagram of transition block of the present invention；
Figure 13 is the cross section structure diagram of transition block of the present invention.
Specific embodiment
Below in conjunction with accompanying drawing, and technical characteristic and advantage of other above-mentioned to the present invention are described in more detail.
Gear pump and fluid valve are combined as a whole in the present invention, both internally have the hydraulic circuit being connected, high
After hydraulic fluid force feed flows out from pump, the hydraulic circuit through being connected is entered in fluid valve, and enters elevating ram through fluid valve
In.
Refer to shown in Fig. 1, its be the present invention face the schematic diagram of structure first；The valve body 1 of fluid valve in the present invention
Stretch into inside the pump housing 7, combine with gear pump；Transition block 5 on fluid valve is fitted with the outer surface of the pump housing 7, transition block 5
The upper end of valve body 1 is connected to, in the present invention, valve body 1 is disposed entirely within inside the pump housing 7, and by transition block 5 by the He of the pump housing 7
Fluid valve is sealed, and a magnetic valve 6 is also set up in transition block 5, to carry out cut-offfing control to fluid valve.In the present invention, mistake
Crossing block 5 and having except being connected for the pump housing 7 and fluid valve is played, also makes fluid valve oil return and rapid-action function.In this reality
In applying example, the pump in pump valve combining structure is gear pump, and its body construction is substantially identical with of the prior art, different
To be provided with the pump housing 7 in the accommodating cavity 72 of the valve body 1 of an accommodating fluid valve, the accommodating cavity 72 respectively with the master of fluid valve
Oil-in 11 and the insertion of main oil-out 13, also, the oil return circuit of fluid valve, by the oil circuit, fluid valve are set on the pump housing 7
Oil return can flow back into the oil back chamber on the pump housing 7, and through the oil return of oil return opening 74.
Incorporated by reference to shown in Fig. 2, the gear pump in the present invention includes the pump housing 7, and gear pump is by gear shaft 71 and motor
Output shaft connection, in the side of the pump housing 7, oil-in 76, oil-out 77 and oil return opening 74 are set, above-mentioned oil inlet and outlet with
And it is connected to a pipe joint on oil return opening, and corresponding bonded washer 75, and connect with corresponding oil pipe respectively, so as to
Form hydraulic circuit.In the present embodiment, the pump is a gear pump, at the oil return opening 74 of the pump housing 7, arranges an oil back chamber 58,
One overflow valve 78 is set in oil back chamber 58, the initial pressure of oil return is controlled.In the present embodiment, front end and the protecgulum 83 of the pump housing 7 connect
Connect, rear end is connected with bonnet 85, fluid valve is arranged in the cavity in bonnet 85.
On protecgulum 83, bearing 84 is set, to the gear shaft for supporting driven gear 82, in the tooth of opposite side driving gear
Bearing is provided with wheel shaft 71, bearing is also equipped with the inner side of protecgulum 84, the gear to support gear shaft 71, on the inside of protecgulum
The both sides of axle 71 also set up oil sealing 86, and said structure is the general structure of gear pump, in the present invention, not to the transmission of gear pump
Structure makes a change.In traditional gear pump, after low-pressure hydraulic oil is entered in gear pump, in the presence of gear, be converted to
The hydraulic oil of high pressure, directly flows out from oil-out, and in the present invention, the high pressure liquid force feed after gearing is flowed into first
In the accommodating cavity 72 of valve body 1, after flowing through fluid valve, then flow out from oil-out.
Incorporated by reference to shown in Fig. 3 and Fig. 4, hydraulic oil is entered after pump from oil-in 76, in being total to for driving gear and driven gear
Under same-action, high-pressure oil passage 80 of the hydraulic oil from gear cavity is flowed in the accommodating cavity 72 of fluid valve, and then stream enters fluid valve
In oilhole 21, the valve core movement in valve body 1 is driven, plug screw 89 is also set up on the pump housing 7, to seal to the pump housing 7.
Refer to shown in Fig. 5 and Fig. 6, it is that the schematic diagram of structure second and stereochemical structure are looked up in pump valve of the present invention combination
Figure, arranges the oil return circuit 57 of fluid valve inside the pump housing 7, the spill port 51 and the pump housing 7 in the oil return circuit connection transition block 5
On oil return opening 74, in the present invention, flow through the hydraulic oil in the transition block 5 of fluid valve, Jing spill port 51 flow out after, along oil return
Oil circuit 57 is flow in oil back chamber 58, direction as indicated by the arrows in the figure, most after Jing oil return openings 74 carry out oil return.In the present embodiment
In, oil return circuit 57 includes first level section 57a, the second horizontal segment 57c and vertical section 57b, wherein, what Jing spill ports 51 flowed out
Successively by first level section 57a, vertical section 57b and the second horizontal segment 57c, above-mentioned three sections of cavitys are sequentially connected with and pass through hydraulic oil
It is logical.One end of first level section 57a and spill port insertion, one end and the insertion of oil back chamber 58 of the second horizontal segment 57c.In the first water
One end of flat section 57a and the second horizontal ends is respectively provided with a screw plug 73, to prevent hydraulic oil from flowing out the pump housing.
The fluid valve adopted in the present invention has very big technological improvement compared to fluid valve of the prior art, retouches below
State the technical characteristic and effect of the fluid valve.
Fluid valve in the present invention drives valve element to move up and down by the fluid pressure differential of control valve element upper and lower side, complete
Into opening and closing action.
Refer to shown in Fig. 7, it is the cross section structure diagram of quick multidirectional and multifunctional fluid valve of the invention, the present invention is penetrated
Stream valve includes valve body 1, valve pocket 2, valve element 3, above-mentioned transition block 5, wherein, valve pocket 2 is arranged on inside valve body 1, and valve element 3 is arranged on
In valve pocket 2, transition block 5 is fixed on the upper end of valve body 1.
The bottom of valve body 1 arranges main oil-in 11, and in the sidepiece of valve body 1 at least one main oil-out is arranged, when actually used, can
Quantity and the position of main oil-out are arranged according to the quantity and classification of executive item.In the sidepiece of valve pocket 2, an at least oilhole is set
21, oilhole 21 is looped around on the side wall of valve pocket 2, and the quantity of oilhole 21 is true according to the pressure of system and the specification of element
It is fixed.
In the present invention, in order to produce pressure differential in the upper and lower side of valve element 3, a point difference hole 31 is set in the side wall of valve element 3,
When main oil-in 11 is pressed oil into high pressure liquid, valve element 1 is promoted to move upwards, valve element 1 is opened, and hydraulic oil is flowed into from main oil-out
In executive item, meanwhile, hydraulic oil enters the upper end of valve element 1 from point difference hole 31, and flows in hydraulic circuit through transition block 5.When
When the loop of the upper end of valve element 1 blocks, due to the presence of the upper end high pressure liquid force feed of valve element 1, under its effect, under valve element 1 is rapid
Fall, disconnect hydraulic oil major loop, realize open circuit.
In the present invention, valve body 1 is completely disposed in the accommodating cavity 72 inside the pump housing 7, and main oil-in 11 and master go out
Hydraulic fluid port is communicated with accommodating cavity 72, is entered 1 in valve body from main oil-in 11 through the high pressure liquid force feed of gearing, and fuel-displaced from master
Mouth flows out.
In order to ensure the sealing of hydraulic system, the first sealing ring 41 is set between transition block 5 and valve body 1, valve pocket 2 with
Second sealing ring 42 and the 3rd sealing ring 22 are set between valve body 1.Back-moving spring 4 is also set up inside valve element 3, is closed in valve element 3
When disconnected, back-moving spring 4 sets back, and valve element 3 is moved downward, and disconnects working connection.
Incorporated by reference to shown in Fig. 8, in the present embodiment, the upper end of transition block 5 arranges a magnetic valve 6, arranges in the sidepiece of transition block 5
Spill port 51, the spill port 51 may be provided on the either end facet of transition block 5, and it is connected with the oil return circuit 57 on the pump housing 7,
In the present embodiment, oil return circuit 57 is a groove, and it is opened on the inner surface of the pump housing 7, is extended to from the spill port of transition block 5
In the oil back chamber 58 of the pump housing 7.
Refer to shown in Fig. 9, it is the cross section structure diagram of valve element of the present invention, a point difference hole 31 be set in the sidepiece of valve element 3,
In the present embodiment, divide the internal diameter of outer end 34 in difference hole 31 more than the internal diameter of the inner 35, divide a difference hole 31 to be a shoulder hole.Valve element 3
Top arranges the spring retention chamber 33 of opening, and to accommodate spring 4, the upper end of spring 4 contacts with the bottom of transition block 5, lower end and bullet
Spring accommodating cavity is contacted；One point of poor chamber 36 is arranged on the lower end of spring retention chamber 33, and connects with it；Divide difference hole 31 with a point difference chamber 36
Communicate, after high pressure liquid force feed is flowed into from point difference hole 31, behind point difference chamber 36 and spring retention chamber 33, from the upper end of valve element 3
Loop flow out.
The setting in this point of difference hole 31 so that valve element produces pressure reduction between top and bottom, when hydraulic valve is opened, a point difference hole is passed through
Cross block and form complete loops, when needing to turn off hydraulic valve, the hydraulic fluid pressure of valve element upper end is more than lower end pressure, and valve element is rapid
Action；Thus, hydraulic valve of the present invention is swift in response, and is active in one's movements, it is not necessary to the course of action of conventional pilot valves.
In the outside of valve element 3, the multi-turn chase 32 of annular is set；In the bottom of valve element 3, the first pressure reduction face 37 and light are set
Sliding surface 38, offers a point difference hole 31 on shiny surface 38, and the first pressure reduction face 37 is connected with shiny surface 38；Arrange in the bottom of valve element 3
Sealing surface 39, sealing surface 39 is contacted in jet valve breakdown with valve pocket 2, realizes the disconnection of hydraulic circuit.Sealing surface can be cone
Shape face or arc surface, and other can realize contact sealing structure.
Refer to shown in Figure 10, it is that a valve element accommodating cavity is arranged in the cross section structure diagram of valve pocket of the present invention, valve pocket 2
23, to accommodate valve element 3；Second pressure reduction face 24 is set in the inner chamber of valve pocket 2, and the internal diameter at the second pressure reduction face 24 is more than valve element
The internal diameter of accommodating cavity 23, also greater than the external diameter of valve element, therefore, when high pressure liquid force feed is injected in main oil-in 11, valve element is upwards
After jack-up, under the collective effect in the first pressure reduction face 37 and the second pressure reduction face 24, lateral pressure is more than upper lateral pressure, valve element under valve element
Move upwards, oil circuit is opened.
The lower section of the both sides oilhole 21 of valve pocket 2 arranges valve element step surface 26, to contact with the sealing surface 39 on valve element 3,
Support valve element 3.It is an oil-in 25 in the bottom of valve pocket 2, hydraulic oil is flowed into from the oil-in 25, and work is produced to the lower end of valve element 3
Firmly.
A card access surface 27 is also set up in the outside of valve pocket 2, itself and the clamping of valve body 1.
Refer to shown in Figure 11, it is the cross section structure diagram of valve body of the present invention；It is fuel-displaced that at least one master is set on valve body 1
Mouth 13, namely A mouths, B mouths, to executive item hydraulic oil is provided, and a valve pocket accommodating cavity 14 is arranged on the top of valve body 1, to accommodate valve
Set 2, in the bottom of valve pocket accommodating cavity 14 a valve pocket card access surface 15 is arranged, and it is contacted with the card access surface of valve pocket；Also set up a valve pocket
Step surface 12, to contact with the bottom of valve pocket 2, and supports valve pocket 2.
Refer to shown in Figure 12 and Figure 13, it is facing and cross section structure diagram for transition block of the present invention；In transition block 5
On be threaded hole 56, to be connected with valve body 1.Spill port 51 is set in the bottom of transition block 5, spill port 51 runs through transition
After block, output from sidepiece, the oil return of oil return circuit 57 on the Jing pump housings 7；The bottom of transition block 5 also sets up the control hole of a up/down perforation
52, in the present embodiment, control hole 52 is hole inclined relative to the vertical plane of transition block 5, the upper end of control hole 52 and magnetic valve
End contact.High pressure liquid force feed is flowed through after magnetic valve or other control elements in transition block 5 from control hole 52, Jing spill ports
51 flow back in fuel tank.
In the present invention, low-pressure hydraulic oil is flowed in pump from fuel tank Jing oil-ins 76, the high pressure liquid after gearing
Force feed is entered in accommodating cavity 72 in the oil circuit 80 from inside the pump housing 7, because the main oil-in 11 of valve body 1 is communicated with accommodating cavity 72,
In the cavity that hydraulic oil is entered in valve body 1 from main oil-in 11, valve element 3 is promoted to move upwards, fluid valve is opened, and hydraulic oil is from master
The oil-out 76 of the Jing pump housings of oil-out 13 flows out, meanwhile, the hydraulic oil that point difference hole 31 flows into is passed through from the cavity of the upper end of valve element 3
The control hole 52 crossed on block 1, then flow in the oil return circuit 57 on the pump housing 7 through magnetic valve 6 and spill port 51, and finally flow to
In oil back chamber 58 in the pump housing, the oil return opening 74 on Jing pumps flows back to fuel tank；When electromagnetism valve events, closed electromagnetic valve, blocking control
Drilling 52, flows through a point difference hole 31 and increases rapidly into the hydraulic fluid pressure of the upper end cavity of valve element 3, produces in valve element upper and lower side rapidly
Pressure reduction, under the collective effect of spring, valve element is moved downward, and cuts off hydraulic main circuit, now, pump idle running.
In the present invention, the upper end of transition block 5 can also connect fluid pressure line or other valves, only need that control hole 52 can be blocked
.
The fluid valve of the present invention utilizes jet current principle, being capable of opening with the larger major loop pressure of less Stress control
It is disconnected, after high pressure liquid force feed is flowed into from point difference hole 31, behind point difference chamber 36 and spring retention chamber 33, from the upper end of valve element 3
The control hole 52 of transition block 5 flows out；When control hole 52 is blocked, there is certain flow rate in point difference chamber 36 and spring retention chamber 33
Hydraulic oil be subject to transition block 5 to intercept, be rapidly returned to, the hydraulic oil of return is superimposed with the hydraulic oil of flow forward, poor dividing
Chamber 36 and spring retention chamber 33 form pulse hydraulic, also, move back and forth in point difference chamber 36 and spring retention chamber 33, produce
Raw pulse hydraulic, and finally impact in the bottom in point difference chamber 36 of valve element, valve element falls after rise rapidly.In the present embodiment, difference chamber is divided
36 and spring retention chamber 33 in 1MPa the pressure of 20MPa that can block rapidly in working connection of pressure, realize little pressure
Control big pressure.
Also, fluid valve of the present invention not only reflects rapidly, and pressure maintaining effect can also be realized, in 6 action of magnetic valve, control
By part blocks, now, valve element upper and lower side produces pressure reduction, and the pressure reduction is not enough to order about valve core reset completely in the section of drilling 52
When, the pressure of hydraulic oil major loop reduces, but can be maintained at a steady state value, realizes the pressurize of hydraulic circuit.Also, with control
The change in hole 52 aperture itself, and the size that magnetic valve is blocked to the section of control hole, can control the pressure of hydraulic circuit.
Because the break-make of the magnetic valve being connected with fluid valve is easily controlled, fluid valve can be realized rapid in the presence of point difference hole
Action；Therefore, fluid valve of the invention can realize rapid reciprocating action control under high pressure.
Pump valve combining structure after the pump housing is combined with the fluid valve, using the fluid valve with rapid action and gear pump
With reference to internally arranging the hydraulic circuit being connected, the more conventional hydraulic system of reaction speed fast 30%, and overall weight phase
Lightweight compared with traditional pump and valve, pump valve combination is easy for installation in hydraulic system as one.
The above is only presently preferred embodiments of the present invention, is merely illustrative for invention, and nonrestrictive.
Those skilled in the art understanding, can carry out many changes in the spirit and scope that invention claim is limited to it, change,
It is even equivalent, but fall within protection scope of the present invention.
Claims (4)
1. the integrative-structure of a kind of gear pump and fluid valve, it includes a pump housing (7), it is characterized in that, sets in the described pump housing (7)
An accommodating cavity (72) is put, jet injection valve is set in described accommodating cavity (72), described fluid valve includes valve element (3), valve body (1)
With rebound (5), wherein, described valve element (3) is arranged in described valve body (1) internal cavities, and described rebound (5) is solid
Described valve body (1) upper end is scheduled on, and is contacted with the pump housing (7) outer face, the pump housing (7) to be connected with valve body (1)；It is described
Accommodating cavity (72) and valve body (1) main oil-in (11) and main oil-out (13) insertion, described accommodating cavity (72) also distinguishes
Connect with the high-pressure oil passage (80) on the oil-out (77) and the pump housing (7) of pump, the high-pressure oil passage (80) described in high pressure liquid force feed Jing
Into accommodating cavity (72), and after valve body (1), flow out from the oil-out (77) of pump；A point difference hole is set on described valve element (3)
(31), it makes described valve element (3) upper and lower side produce pressure reduction；Control hole (52) and spill port are set on described rebound (5)
(51), described point difference hole (31), valve element (3) upper cavity and control hole (52) insertion；When fluid valve is opened, described master
Point difference hole (31), valve element (3) upper cavity, control hole (52) and a spill port (51) described in hydraulic oil Jing in oil circuit forms oil
Road；When described control hole (52) is closed, described valve element (3) is under the high pressure liquid force feed effect of valve element (3) upper cavity
Motion, closed jet valve；The oil return circuit (57) of fluid valve, described oil return circuit (57) connection are set inside the pump housing (7)
The oil back chamber (58) on spill port (51) and the pump housing (7) on rebound (5), on described oil back chamber (58) and the pump housing (7)
Spill port (74) connects；
Described oil return circuit (57) includes first level section (57a), vertical section (57b) and the second horizontal segment (57c)；Through crossing
The hydraulic oil that spill port (51) on plate (5) flows out successively passes through first level section (57a), vertical section (57b) and the second level
Section (57c)；Spill port (51) insertion on one end of described first level section (57a) and rebound (5), the second horizontal segment
(57c) one end and oil back chamber (58) insertion；
Also include a valve pocket (2), described valve pocket (2) is arranged in described valve body (1), and described valve element (3) is arranged on institute
In the valve pocket (2) stated, described valve pocket (2) sidepiece arranges an at least oilhole (21)；
Described rebound (5) upper end connects a magnetic valve, during described electromagnetism valve events, opens or closes described control hole
(52)；
Described valve element (3) top arranges the spring retention chamber (33) of opening, and described spring retention chamber (33) lower end arranges one
Divide difference chamber (36), and connect with it；
Described point difference hole (31) is communicated with point difference chamber (36), and high pressure liquid is pressed oil from described point difference hole (31) after flowing into, Jing
Cross described dividing to differ from after chamber (36) and spring retention chamber (33), the spill port (51) from described rebound (5) flows out.
2. a kind of gear pump according to claim 1 and the integrative-structure of fluid valve, is characterized in that, in described valve element
(3) bottom arranges the first pressure reduction face (37), and it produces the pressure reduction of valve element (3) upper and lower end face when fluid valve is opened；
Sealing surface (39) is set in described valve element (3) bottom, described sealing surface (39) is and described in jet valve breakdown
Valve pocket (2) is contacted.
3. a kind of gear pump according to claim 2 and the integrative-structure of fluid valve, is characterized in that, described oil return circuit
(57) it is a groove, it is opened on the inner surface of the pump housing (7), from the spill port of described rebound (5) pump housing (7) is extended to
Oil back chamber (58) in.
4. a kind of gear pump according to claim 3 and the integrative-structure of fluid valve, is characterized in that, described valve pocket (2)
One valve element accommodating cavity (23) of interior setting, to accommodate described valve element (3)；
Second pressure reduction face (24) is set in the inner chamber of described valve pocket (2), and the internal diameter at the second described pressure reduction face (24) place is big
In the internal diameter of described valve element accommodating cavity (23)；When fluid valve is opened, described the first pressure reduction face (37) and the second pressure reduction face
(24) pressure reduction of valve element (3) upper and lower end face is produced, lateral pressure is more than upper lateral pressure under described valve element (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410388119.0A CN104214090B (en) | 2014-08-08 | 2014-08-08 | An integral structure of a gear pump and a jet flow valve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410388119.0A CN104214090B (en) | 2014-08-08 | 2014-08-08 | An integral structure of a gear pump and a jet flow valve |
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| Publication Number | Publication Date |
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| CN104214090A CN104214090A (en) | 2014-12-17 |
| CN104214090B true CN104214090B (en) | 2017-04-26 |
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| CN201410388119.0A Expired - Fee Related CN104214090B (en) | 2014-08-08 | 2014-08-08 | An integral structure of a gear pump and a jet flow valve |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533782B (en) * | 2014-12-30 | 2017-01-11 | 南京萨伯工业设计研究院有限公司 | Variable plunger hydraulic pump body |
| CN114382736A (en) * | 2021-12-07 | 2022-04-22 | 宁波雪隆王液压科技有限公司 | Novel flow gathering valve and valve group system |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1119682B (en) * | 1979-03-07 | 1986-03-10 | Fiat Allis Macch Movi | AFLUID PUMP FOR HYDRAULIC CIRCUITS |
| LU88384A1 (en) * | 1993-07-16 | 1995-02-01 | Hydrolux Sarl | 2-way cartridge valve as a seat valve |
| CN201057144Y (en) * | 2007-06-25 | 2008-05-07 | 中国船舶重工集团公司第七一一研究所 | Control pump for hydrodynamic torque converter |
| CN202273935U (en) * | 2011-10-27 | 2012-06-13 | 泊姆克(天津)液压有限公司 | Lifting control valve assembly for self-dumping automobile |
| CN203098273U (en) * | 2012-12-06 | 2013-07-31 | 浙江奥力电机股份有限公司 | Direct-connection pump-valve integrated high-pressure hydraulic pump |
| CN203189374U (en) * | 2013-04-01 | 2013-09-11 | 重庆航宇实业有限公司 | Engineering vehicle hydraulic pump valve integrated system |
| CN203670808U (en) * | 2014-01-06 | 2014-06-25 | 常德中联重科液压有限公司 | Pilot-operated relief valve |
| CN204082538U (en) * | 2014-08-08 | 2015-01-07 | 宁波雪隆王液压科技有限公司 | The integrative-structure of a kind of gear pump and fluid valve |
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