CN106050650B - Gear pump and bypass oil circuit structure thereof - Google Patents
Gear pump and bypass oil circuit structure thereof Download PDFInfo
- Publication number
- CN106050650B CN106050650B CN201610570897.0A CN201610570897A CN106050650B CN 106050650 B CN106050650 B CN 106050650B CN 201610570897 A CN201610570897 A CN 201610570897A CN 106050650 B CN106050650 B CN 106050650B
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- Prior art keywords
- section
- hole
- sealing
- circuit structure
- bleed
- Prior art date
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- 238000009434 installation Methods 0.000 claims abstract description 47
- 230000001105 regulatory effect Effects 0.000 claims abstract description 36
- 238000007789 sealing Methods 0.000 claims description 44
- 239000012530 fluid Substances 0.000 claims description 28
- 210000004907 gland Anatomy 0.000 claims description 17
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 abstract description 18
- 238000004891 communication Methods 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 210000000515 tooth Anatomy 0.000 description 8
- 238000001914 filtration Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/24—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
- F04C14/26—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Rotary Pumps (AREA)
Abstract
The invention relates to a gear pump and a bypass oil circuit structure thereof. The bypass oil path structure includes: the liquid discharge cover comprises a bottom plate and a side wall extending from the periphery of the bottom plate along the axial direction, a liquid discharge port is formed in the bottom plate, an overflow hole is formed in the side wall, an installation part is further arranged on the liquid discharge cover, the installation part is arranged close to the liquid discharge port, part of the installation part is formed in the side wall of the liquid discharge cover, the protruding stretching direction of the installation part is offset relative to the radial direction of the liquid discharge cover, a bypass hole is formed in the installation part in a penetrating mode along the protruding stretching direction of the installation part, the bypass hole is communicated with the liquid discharge port of the liquid discharge cover and the overflow hole, and the overflow regulating valve is movably arranged in the bypass hole and used for blocking communication between the bypass hole and the liquid discharge port. The bypass oil way is compact in structure.
Description
Technical field
The present invention relates to a kind of pumping, more particularly to a kind of gear pump and its bleed off circuit structure.
Background technology
At present, gear pump is a kind of conventional hydraulic pump in Hydraulic Power Transmission System, can divide interior nibble by gear mesh form
Close two kinds of gear pump and external gear rotary pump.Internal gear pump includes actuator and gear pair.Gear pair includes gear and gear ring,
Gear is arranged on the main shaft of actuator and its periphery protrudes outward the gear teeth of multiple circular arcs, and gear ring is ring-type and its inner side
Formed with multiple engaging tooths, the gear ring is sheathed on the gear, and actuator is rotated by main shaft drive gear, and gear passes through
The gear teeth of its periphery drive gear ring to rotate in same direction.When the gear teeth of gear and the engaging tooth of gear ring are separated from each other, it is understood at the two
Between cause negative pressure, so as to suck liquid.When the engaging tooth intermeshing of the gear teeth and gear ring of gear, can produce between just
Pressure, so as to which liquid be discharged.Be meshed with the gear ring volume in formed space of gear can produce cyclically-varying, when the volume
Change circulation primary, then realize that suction material and discharge material are each once.
For the hydraulic pressure of adjustment gear pump, gear pump typically also includes bleed off circuit structure, and bleed off circuit structure includes side
Logical oil circuit and overflow regulating valve.Overflow regulating valve is installed on the housing of gear pump and communicated with the bleed off circuit of gear pump, uses
In the hydraulic pressure of adjustment gear pump.However, because overflow regulating valve convexedly stretches in the outside of gear pump so that gear pump structure more divides
Dissipate, and make it that overflow regulating valve is easily collided.
The content of the invention
In view of this, it is necessary to which a kind of compact-sized bleed off circuit structure and gear pump are provided.
A kind of bleed off circuit structure, including：Discharge opeing lid (15) and the overflow regulating valve being installed on the discharge opeing lid (15)
(50) side wall that, the discharge opeing lid (15) includes bottom plate (151), in axial direction extended from the bottom plate (151) periphery
(153) leakage fluid dram (1511), is offered on the bottom plate (151), spout hole (156) is offered on the side wall (153), it is described
Installation portion (117) is additionally provided with discharge opeing lid (15), the neighbouring leakage fluid dram (1511) of the installation portion (117) is set and part
In the side wall (153) of the discharge opeing lid (15), the installation portion (117) protrudes out direction relatively described discharge opeing lid (15)
Radial direction biases, and the installation portion (117) offers by-pass prot (1551), the by-pass prot along the direction insertion that protrudes out of itself
(1551) communicated with the leakage fluid dram (1511) and the spout hole (156) of the discharge opeing lid (15), the overflow regulating valve
(50) actively it is installed in the by-pass prot (1551), for adjusting the company of by-pass prot (1551) and the leakage fluid dram (1511)
It is logical.
In a wherein embodiment, the overflow regulating valve (50) includes valve element (55) and overflow regulating part (57),
The by-pass prot (1551) has the Connectivity Section (1553) connected with the leakage fluid dram (1511), and the overflow regulating valve (50) is supported
One end of the valve element (55) is held in, the other end of the valve element (55) is held in the end face periphery of the Connectivity Section (1553)
On.
In a wherein embodiment, the spout hole (156) is vertical with the Connectivity Section (1553) to be communicated.
In a wherein embodiment, the overflow regulating valve (50) also includes gland (51) and valve rod (53), described
Valve element (55) is contained in the valve rod (53), and the gland (51) matches somebody with somebody to merge with the by-pass prot (1551) presses on the valve
On bar (53), the overflow regulating part (57) is arranged in the gland (51) and convexedly stretched in the valve rod (53), described to overflow
Stream regulating part (57) matches somebody with somebody to merge with the valve rod (53) supports the valve element (55).
In a wherein embodiment, the by-pass prot (1551) also has seal section (1554), compresses section (1555)
And regulation section (1557), the Connectivity Section (1553), the seal section (1554), described compress section (1555) and the tune
Section (1557) is sequentially communicated, described to compress between section (1555) and the regulation section (1557) formed with regulation step
(1558), the gland (51) is bolted in the regulation section (1557) and is held on the regulation step (1558).
In a wherein embodiment, the seal section (1554) and described compress between section (1555) formed with compressing
Step, the valve rod (53) include coaxially connected sealing (531) and pressure section (533), the external diameter of the sealing (531)
Less than the external diameter of the pressure section (533), the pressure section (533) be held in it is described compress on step, the sealing (531)
It is arranged in the seal section (1554).
In a wherein embodiment, sealing hole (534), the pressure section are offered on the sealing (531)
(533) offered on and compress hole (535), it is described compress hole (535) extend in the sealing (531) and with the sealing hole
(534) connect, the diameter for compressing hole (535) is less than the diameter of sealing hole (534), the side wall shape for compressing hole (535)
Into compressing auxiliary section (536), the overflow regulating part (57), which is arranged in, described to be compressed in hole (535) and compresses cooperation with described
Portion (536) screw thread coordinates, and the valve element (55) is slideably positioned in the sealing hole (534).
In a wherein embodiment, the valve element (55) includes coaxially connected blockage (551) and sliding part
(553), the sliding part (553) is slided and is contained in the sealing hole (534) of the valve rod (53), on the blockage (551)
Formed with sealing surface (555), the diameter of the blockage (551) is more than the diameter of the Connectivity Section (1553), the blockage
(551) sealing surface (555) is held on the end face periphery of the Connectivity Section (1553).
A kind of gear pump, including bleed off circuit structure as described above.
Because in bleed off circuit structure, installation portion part is formed in the side wall of discharge opeing lid, and the side of protruding out of installation portion
Biased to the radial direction of relative discharge opeing lid, reduce installation portion and protrude out height with respect to discharge opeing lid so that the bypass of gear pump
Oil channel structures are more compact, also make it that the structure of gear pump is more compact.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
The accompanying drawing of other embodiment is obtained according to these accompanying drawings.
Fig. 1 is the schematic perspective view of the gear pump of an embodiment.
Fig. 2 is the diagrammatic cross-section of Fig. 1 gear pumps.
Fig. 3 is the end-view of Fig. 1 gear pumps partly cut-away；And
Fig. 4 is the enlarged drawing at IV in Fig. 3.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
A kind of bleed off circuit structure in gear pump, it includes：Discharge opeing lid and it is installed in the overflow that the discharge opeing covers and adjusts
Valve is saved, the discharge opeing lid includes bottom plate, the side wall in axial direction extended from the base portion peripheral and installation portion, the bottom plate
On offer leakage fluid dram, offer spout hole in the side wall, the installation portion is set adjacent to the leakage fluid dram and part is located at
In in the side wall of the discharge opeing lid, the radial direction for protruding out the relatively described discharge opeing lid in direction of the installation portion biases, the peace
Dress portion offers by-pass prot, leakage fluid dram and the overflow of the by-pass prot with the discharge opeing lid along the direction insertion that protrudes out of itself
Kong Jun is communicated, and the overflow regulating valve is actively installed in the by-pass prot, for adjusting by-pass prot and the leakage fluid dram
Connection.
Because in bleed off circuit structure, installation portion part is formed in the side wall of discharge opeing lid, and the side of protruding out of installation portion
Biased to the radial direction of relative discharge opeing lid, reduce installation portion and protrude out height with respect to discharge opeing lid so that the bypass of gear pump
Oil channel structures are more compact, also make it that the structure of gear pump is more compact.
Fig. 1 and Fig. 2 is referred to, for example, the gear pump 100 of an embodiment, including housing 10, the drive that is arranged in housing 10
Dynamic component 20, the gear pair 30 being connected with drive component 20 and the overflow regulating valve 50 being arranged on housing 10.Implement one
In mode, gear pump 100 is crescent gear pump.For example, gear pump 100 is cycloidal type crescent gear pump.
Housing 10 is cylindrical shape, and it includes main casing 11, is arranged at the filtration members 13 and discharge opeing lid 15 at the both ends of main casing 11,
And the cover plate 17 that neighbouring filtration members 13 are set.
Main casing 11 is cylindrical shape, and it includes the leading-in end 111 being oppositely arranged and outlet side 113.The external diameter of leading-in end 111
Less than the external diameter of outlet side 113.Main casing 11 has been internally formed receiving space 115 and neighbouring leading-in end 111 is provided with installation portion
117, receiving space 115 is separated into interconnected installation cavity 1151 and host cavity 1153 by installation portion 117.The shape of installation cavity 1151
The inner side of outlet side 113 is formed at into the inner side of leading-in end 111, host cavity 1153.Filtration members 13 are peviform screen pack, and it is filled
Leading-in end 111 and cover located at main casing 11 set installation cavity 1151.Discharge opeing lid 15 is cylindrical shape, and is installed in the row of main casing 11
Go out end 113 and close host cavity 1153.Discharge opeing lid 15 includes bottom plate 151, from the side that the periphery of bottom plate 151 in axial direction extends
Wall 153, and the annular connecting portion 154 extended radially outward from the periphery of side wall 153.The gear of bottom plate 151 is located at host cavity 1153
On, annular connecting portion 154 is fixed on the outlet side 113 of main casing 11.Also referring to Fig. 3, it is arranged at intervals with bottom plate 151
Leakage fluid dram 1511 and connection jaws 1513.The center-biased of leakage fluid dram 1511 and the equal opposed bottom 151 of connection jaws 1513.Leakage fluid dram
1511 are used to discharge the liquid in main casing 11, and connection jaws 1513 are used to introduce cable to connect drive component 20.
Discharge opeing lid 15 also includes the installation portion 155 convexedly stretched in side wall 153.The part of installation portion 155 is formed at discharge opeing lid 15
Side wall 153 in, and the plane tangent of the top surface of installation portion 155 and side wall 153.Installation portion 155 is placed on discharge opeing lid 15, i.e.,
The direction that protrudes out of installation portion 155 biases with respect to the radial direction of discharge opeing lid 15.In the present embodiment, installation portion 155 is step
Shape.Also referring to Fig. 4, installation portion 155 offers by-pass prot 1551 along direction insertion is protruded out.By-pass prot 1551 and discharge opeing lid 15
Leakage fluid dram 1511 vertically communicated in discharge opeing lid 15.By-pass prot 1551 includes Connectivity Section 1553, the seal section being sequentially communicated
1554th, section 1555 and regulation section 1557 are compressed.Connectivity Section 1553 connects with the leakage fluid dram 1511 of discharge opeing lid 15.Connectivity Section
1553rd, seal section 1554, compress section 1555 and adjust section 1557 diameter increase successively.The sidewall surfaces light of seal section 1554
It is sliding, seal section 1554 and compress between section 1555 formed with compressing step.Compress section 1555 and regulation section 1557 between formed with
Adjust step 1558.Adjust and be provided with screw thread 1559 in the side wall of section 1557.Overflow is further opened with the side wall 153 of discharge opeing lid 15
Hole 156, spout hole 156 are set adjacent to the bottom plate 151 of discharge opeing lid 15.Spout hole 156 is vertical with the by-pass prot 1551 of installation portion 155
Communicate, and the leakage fluid dram 1511 of relative discharge opeing lid 15 is vertically arranged.In one embodiment, installation portion 155 is adopted with discharge opeing lid 15
With chimeric design, it is contained in for example, installation portion 155 is chimeric in discharge opeing lid 15.Specifically, spout hole 156 and by-pass prot 1551
Seal section 1554 connects, so as to be connected by Connectivity Section 1553 with leakage fluid dram 1511.In the present embodiment, spout hole 156 passes through
The side wall 153 of logical discharge opeing lid 153, is in communication with the outside with realizing.
Referring to Fig. 2, drive component 20 includes actuator, the main shaft 23 being connected with the actuator and two cunnings
Dynamic bearing 25.Actuator is installed on housing 11, and main shaft 23 is installed in host cavity 1153.Two sliding bearings 25 are arranged respectively
In the both ends of main shaft 23 and it is installed in main casing 11, main shaft 23 is rotated and is arranged in host cavity 1153.The one of main shaft 23
End is convexly equipped in outside sliding bearing 25 and is arranged in the installation cavity 1151 of main casing 11, so as to form installation end 231.In this implementation
In mode, actuator is motor.
Gear pair 30 includes the internal rotor 31 and outer rotor 33 to cooperate.The installation end of the fixed main shaft 23 of internal rotor 31
On 231 and it is contained in installation cavity 1151.The periphery of internal rotor 31 protrudes outward the gear teeth of multiple circular arcs, 33 sets of outer rotor
On internal rotor 31 and and the eccentric setting of internal rotor 31.The inner peripheral of outer rotor 33 is formed with multiple engaging tooths.Internal rotor 31
Under the driving of main shaft 23 outer rotor 33 can be driven to rotate in same direction, the engaging tooth of a part of gear teeth and outer rotor 33 of internal rotor 31
It is mutually remote, so as to form negative pressure between the gear teeth and engaging tooth, to introduce liquid outside filtration members 13.In rotation process, interior turn
A part of gear teeth of son 31 are meshed with the engaging tooth of outer rotor 33, will so as to form malleation between the gear teeth and engaging tooth
Liquid discharges main casing 11 from the leakage fluid dram 1511 of discharge opeing lid 15.In the present embodiment, outer rotor 33 is escapement.
Referring to Fig. 3 and Fig. 4, overflow regulating valve 50 is mechanical overflow valve, and it is installed in the bypass of installation portion 155
In hole 1551.Overflow regulating valve 50 includes gland 51, valve rod 53, valve element 55 and overflow regulating part 57.Gland 51 and by-pass prot
1551 screw thread of regulation section 1557 is pressed on valve rod 53 with merging, and valve element 55 slides and is contained in valve rod 53 and is held in bypass
In the Connectivity Section 1553 in hole 1551.Overflow regulating part 57 is contained in gland 51 and coordinated with the screw thread of valve rod 53.Overflow regulating part
57 end is held in the end of valve element 55 with adjusting spool 55 in supporting dynamics on Connectivity Section 1553.
Gland 51 is annular shape, and its through offers handle hole 511.The outside of gland 51 is formed with screw part 513.
Gland 51 is installed in the regulation section 1557 of by-pass prot 1551, and screw part 513 mutually screws togather with adjusting the screw thread 1559 of section 1557.
Gland 51 can press on the regulation step 1558 compressed between section 1555 and regulation section 1557 of by-pass prot 1551, to prevent gland
51 compressing in section 1555 into by-pass prot 1551.
Valve rod 53 is tubular, including coaxially connected sealing 531 and pressure section 533.The external diameter of sealing 531, which is less than, to be supported
The external diameter of splenium 533 so that pressure section 533 can be held in the seal section 1554 of by-pass prot 1551 and compress between section 1555
Compress on step, to prevent the pressure section 533 of valve rod 53 from entering in the Connectivity Section 1553 of by-pass prot 1551.The center of sealing 531
Offer sealing hole 534, the center of pressure section 533, which offers, compresses hole 535, compress hole 535 extend in sealing 531 and with
Sealing hole 534 connects.The diameter for compressing hole 535 is less than the diameter of sealing hole 534.Compress the side wall in hole 535 and match somebody with somebody formed with compressing
Conjunction portion 536.In the present embodiment, it is screw thread to mortgage auxiliary section 536.Spacer sleeve is provided with two sealing rings on sealing 531, i.e.,
Spacer sleeve is provided with two O-rings, so as to increase sealing property of the tightness 531 to the seal section 1554 of by-pass prot 1551.
Valve element 55 is partially housed in the sealing 531 of valve rod 53.Valve element 55 include coaxially connected blockage 551 and
Sliding part 553.Blockage 551 is frustum, and thereon formed with sealing surface 555.The diameter of blockage 551 is more than by-pass prot
The diameter of 1551 Connectivity Section 1553.Blockage 551 is partially housed in Connectivity Section 1553, and the sealing surface of blockage 551
555 are held in the end face periphery of Connectivity Section 1553 of by-pass prot 1551, so as to which by-pass prot 1551 be sealed.Sliding part 553 is slided and set
It is placed in the sealing hole 534 of valve rod 53 and the end for compressing hole 535 can be held in.Spacer sleeve is close provided with two on sliding part 553
Seal, that is, two O-rings are arranged with, so as to increase sealing property of the sliding part 553 to the sealing hole 534 of valve rod 53.
Overflow regulating part 57 is contained in the handle hole 511 of gland 51, and is coordinated with the screw thread of valve rod 53.Overflow regulating part 57
Surface be provided with regulation auxiliary section 571, the pressure section 533 that regulation auxiliary section 571 one end is contained in valve rod 53 compresses hole 535
In, and be engaged with compressing auxiliary section 536.In the present embodiment, regulation auxiliary section 571 is matched somebody with somebody with compressing the screw thread of auxiliary section 536
Close.
Such as, there is provided a kind of bleed off circuit structure, the bleed off circuit structure include the discharge opeing lid 15 and the overflow
Regulating valve 50.
Referring to Fig. 1 to Fig. 4, when assembling gear pump 100, drive component 20 is installed in housing 10, by gear
Pair 30 is contained in housing 10 and is connected with drive component 20.In use, start drive component 20 to drive gear pair 30 to work,
So as to produce negative pressure with by liquid, such as oil is out of one end suction casing 10.Gear pair 30 also produces malleation by liquid from housing
10 other end discharge.When needing the fluid pressure in adjustment gear pump 100, the overflow regulating part of rotation overflow regulating valve 50
57, overflow regulating part 57 is gradually distance from valve element 55, the sealing surface 555 of valve element 55 by liquid in leakage fluid dram 1511 pressure,
So as to depart from the leakage fluid dram 1511 away from discharge opeing lid 15.Liquid in leakage fluid dram 1511 flows into the Connectivity Section 1553 of by-pass prot 1551
And enter in the spout hole 5131 on oil channel structures 51, so as to discharge the fluid pressure in gear pump 100.
Because in bleed off circuit structure, overflow regulating valve 50 is installed in installation portion 155, and the part shape of installation portion 155
Into in the side wall 153 of discharge opeing lid 15, and the direction that protrudes out of installation portion 155 biases with respect to the radial direction of discharge opeing lid 15, therefore,
Reduce installation portion 155 and protrude out height with respect to discharge opeing lid 15 so that the bleed off circuit structure 50 of gear pump 100 is more compact.
Therefore, also make it that the structure of gear pump 100 is more compact.
In addition, when gear pump 100 is cycloid crescent gear pump, it has compared with involute external gear rotary pump
It is compact-sized, light weight, the advantages that size is small.And due to gear rotating Vortex, relative sliding velocity is small, and abrasion is slight, makes
With long lifespan, flow pulsation is small, thus pressure fluctuation and noise are all smaller.Meanwhile fluid is easily full of under the influence of centrifugal force
Inter-tooth slots, therefore allow high-speed gear to rotate, volumetric efficiency is long compared with the service life of the high gear pump 100 and flow pulsation is small.
Described above has fully disclosed the embodiment of the present invention.It is pointed out that it is familiar with the field
Scope of the technical staff to any change that the embodiment of the present invention is done all without departing from claims of the present invention.
Correspondingly, the scope of claim of the invention is also not limited only to previous embodiment.
Claims (10)
- A kind of 1. bleed off circuit structure, it is characterised in that including：Discharge opeing lid (15) and be installed on the discharge opeing lid (15) overflow Regulating valve (50) is flowed, the discharge opeing lid (15) includes bottom plate (151), periphery in axial direction extends from the bottom plate (151) Side wall (153), leakage fluid dram (1511) is offered on the bottom plate (151), spout hole (156) is offered on the side wall (153), Be additionally provided with installation portion (117) on the discharge opeing lid (15), the neighbouring leakage fluid dram (1511) of the installation portion (117) set and In the side wall (153) of the discharge opeing lid (15), the installation portion (117) protrudes out the relatively described discharge opeing lid in direction for part (15) radial direction biasing, the installation portion (117) offers by-pass prot (1551) along the direction insertion that protrudes out of itself, described By-pass prot (1551) is communicated with the leakage fluid dram (1511) and the spout hole (156) of the discharge opeing lid (15), and the overflow is adjusted Section valve (50) is actively installed in the by-pass prot (1551), for adjusting by-pass prot (1551) and the leakage fluid dram (1511) Connection.
- 2. bleed off circuit structure as claimed in claim 1, it is characterised in that the overflow regulating valve (50) includes valve element (55) With overflow regulating part (57), the by-pass prot (1551) has the Connectivity Section (1553) connected with the leakage fluid dram (1511), institute One end that overflow regulating part (57) is held in the valve element (55) is stated, the other end of the valve element (55) is held in the Connectivity Section (1553) on end face periphery.
- 3. bleed off circuit structure as claimed in claim 2, it is characterised in that the spout hole (156) and the Connectivity Section (1553) vertically communicate.
- 4. bleed off circuit structure as claimed in claim 2, it is characterised in that the overflow regulating valve (50) also includes gland (51) it is contained in valve rod (53), the valve element (55) in the valve rod (53), the gland (51) and the by-pass prot (1551) pressed on merging on the valve rod (53), the overflow regulating part (57) is arranged in the gland (51) and protruded out In the valve rod (53), the overflow regulating part (57) matches somebody with somebody to merge with the valve rod (53) supports the valve element (55).
- 5. bleed off circuit structure as claimed in claim 4, it is characterised in that the by-pass prot (1551) also has seal section (1554) section (1555) and regulation section (1557), are compressed, the Connectivity Section (1553), the seal section (1554), described is supported Pressure section (1555) and the regulation section (1557) are sequentially communicated, described to compress between section (1555) and the regulation section (1557) Formed with regulation step (1558), the gland (51) is bolted in the regulation section (1557) and is held in the regulation step (1558) on.
- 6. bleed off circuit structure as claimed in claim 5, it is characterised in that the seal section (1554) compresses section with described (1555) formed with step is compressed between, the valve rod (53) includes coaxially connected sealing (531) and pressure section (533), The external diameter of the sealing (531) is less than the external diameter of the pressure section (533), and the pressure section (533) is held in described compress On step, the sealing (531) is arranged in the seal section (1554).
- 7. bleed off circuit structure as claimed in claim 6, it is characterised in that offer sealing hole on the sealing (531) (534), offered on the pressure section (533) and compress hole (535), the hole (535) that compresses extends to the sealing (531) Interior and connected with the sealing hole (534), the diameter for compressing hole (535) is less than the diameter of sealing hole (534), described to compress The side wall in hole (535) is arranged in described compress in hole (535) formed with auxiliary section (536), the overflow regulating part (57) is compressed And coordinate with described auxiliary section (536) screw thread that compresses, the valve element (55) is slideably positioned in the sealing hole (534).
- 8. bleed off circuit structure as claimed in claim 7, it is characterised in that the valve element (55) includes coaxially connected obstruction Portion (551) and sliding part (553), the sliding part (553) are slided and are contained in the sealing hole (534) of the valve rod (53), It is more than the Connectivity Section (1553) formed with sealing surface (555), the diameter of the blockage (551) on the blockage (551) Diameter, the sealing surface (555) of the blockage (551) is held on the end face periphery of the Connectivity Section (1553).
- 9. bleed off circuit structure as claimed in claim 8, it is characterised in that between on the sliding part (553) of the valve element (55) Spacer is provided with two sealing rings, and spacer sleeve is provided with two sealing rings on the sealing of the valve rod (53).
- 10. a kind of gear pump, it is characterised in that including bleed off circuit structure as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610570897.0A CN106050650B (en) | 2016-07-19 | 2016-07-19 | Gear pump and bypass oil circuit structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610570897.0A CN106050650B (en) | 2016-07-19 | 2016-07-19 | Gear pump and bypass oil circuit structure thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106050650A CN106050650A (en) | 2016-10-26 |
| CN106050650B true CN106050650B (en) | 2018-02-09 |
Family
ID=57187267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610570897.0A Active CN106050650B (en) | 2016-07-19 | 2016-07-19 | Gear pump and bypass oil circuit structure thereof |
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| CN110594149A (en) * | 2019-10-09 | 2019-12-20 | 珠海格力电器股份有限公司 | Gear pump and differential pressure regulating system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6461118B1 (en) * | 1997-07-18 | 2002-10-08 | Rpm Industries, Inc. | Oil pump by-pass valve for an internal combustion engine |
| CN201461390U (en) * | 2009-07-08 | 2010-05-12 | 严志圣 | Pressure-regulating gear pump |
| CN203009289U (en) * | 2013-01-21 | 2013-06-19 | 宁波捷诚机电设备工程有限公司 | Oil pump |
| CN205876709U (en) * | 2016-07-19 | 2017-01-11 | 珠海格力电器股份有限公司 | Gear pump and bypass oil circuit structure thereof |
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| JP4888158B2 (en) * | 2007-02-28 | 2012-02-29 | 株式会社ジェイテクト | Electric pump unit and electric oil pump |
| GB2521874A (en) * | 2014-01-07 | 2015-07-08 | Perkins Engines Co Ltd | Gerotor pump assembly, an engine fluid delivery system using a gerotor pump assembly and miscellaneous components |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6461118B1 (en) * | 1997-07-18 | 2002-10-08 | Rpm Industries, Inc. | Oil pump by-pass valve for an internal combustion engine |
| CN201461390U (en) * | 2009-07-08 | 2010-05-12 | 严志圣 | Pressure-regulating gear pump |
| CN203009289U (en) * | 2013-01-21 | 2013-06-19 | 宁波捷诚机电设备工程有限公司 | Oil pump |
| CN205876709U (en) * | 2016-07-19 | 2017-01-11 | 珠海格力电器股份有限公司 | Gear pump and bypass oil circuit structure thereof |
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| CN106050650A (en) | 2016-10-26 |
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