CN112483342A - Compact high-efficient type pump of sound bars is inhaled in area - Google Patents
Compact high-efficient type pump of sound bars is inhaled in area Download PDFInfo
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- CN112483342A CN112483342A CN202011456842.XA CN202011456842A CN112483342A CN 112483342 A CN112483342 A CN 112483342A CN 202011456842 A CN202011456842 A CN 202011456842A CN 112483342 A CN112483342 A CN 112483342A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 50
- 238000010521 absorption reaction Methods 0.000 claims abstract description 28
- 239000007788 liquid Substances 0.000 claims description 34
- 238000009826 distribution Methods 0.000 claims description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 238000005096 rolling process Methods 0.000 claims description 6
- 239000006185 dispersion Substances 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/2014—Details or component parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/2014—Details or component parts
- F04B1/2064—Housings
- F04B1/2071—Bearings for cylinder barrels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/2014—Details or component parts
- F04B1/2078—Swash plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/22—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block having two or more sets of cylinders or pistons
- F04B1/24—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block having two or more sets of cylinders or pistons inclined to the main shaft axis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/001—Noise damping
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a compact high-efficiency pump with a sound absorption grid, which relates to the technical field of pumps and comprises: the sound absorption device comprises a shell, wherein a plurality of sound absorption grids are arranged on the inner side wall of the shell, all the sound absorption grids are arranged along the circumferential direction of the shell, and all the sound absorption grids protrude out of the inner side wall of the shell; the cylinder body is rotationally arranged in the shell, the axis of the cylinder body is superposed with that of the shell, and a plurality of inclined plunger holes which are distributed in a conical shape are arranged on the cylinder body along the circumferential direction of the cylinder body; the plurality of plungers are in one-to-one correspondence with the inclined plunger holes, and one plunger is slidably arranged in one inclined plunger hole. Inhale the sound bars and can effectively block the transmission of sound wave, and then can effectively the noise reduction, inhale the sound bars simultaneously and increased the heat radiating area of casing, and then effectively improved the heat dispersion of casing. In addition, the inverted cone cylinder body is matched with the inclined plunger hole which is distributed in a conical shape, so that the plunger generates radial centrifugal force which is favorable for self-suction when rotating, and further the suction phenomenon can be effectively prevented.
Description
Technical Field
The invention relates to the technical field of pumps, in particular to a compact and efficient pump with a sound absorption grating.
Background
At present, more and more hydraulic machinery plants adopt a production mode of 'servo motors + constant displacement pumps', and compared with a traditional production mode of 'common variable frequency motors + variable displacement pumps', the mode saves energy by at least 20% and electricity by 30%. However, the rotating speed of the servo motor is much higher than that of a common variable frequency motor, the pump is easy to suck when working at a high rotating speed for a long time, precision parts of the pump are damaged, the service life of the pump is influenced, high noise is generated when the high rotating speed is achieved, the pump works at the high rotating speed for a long time, and a shell is not timely in heat dissipation and high in temperature, so that sealing parts of the pump are damaged, and oil leakage of the pump is caused.
Therefore, how to overcome the above-mentioned drawbacks becomes a problem that those skilled in the art need to solve at present.
Disclosure of Invention
In order to solve the technical problems, the invention provides a compact and efficient pump with a sound absorption grid, so that the noise is reduced, the heat dissipation performance of a shell is improved, and the pump suction phenomenon is effectively prevented.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a compact and efficient pump with a sound absorption grating, which comprises: the sound absorption device comprises a shell, wherein a liquid inlet and a liquid outlet which are communicated with the inside of the shell are formed in the shell, a plurality of sound absorption grids are arranged on the inner side wall of the shell along the axial direction of the shell, each sound absorption grid is arranged along the circumferential direction of the shell, and each sound absorption grid protrudes out of the inner side wall of the shell; the swash plate is obliquely arranged in the shell and is fixedly connected with the shell; the spherical hinge is rotatably arranged in the shell; the cylinder body is rotationally arranged in the shell, the axes of the cylinder body and the shell are superposed, and a plurality of inclined plunger holes which are distributed in a conical shape are arranged on the cylinder body along the circumferential direction of the cylinder body; the flow distribution plate is arranged in the shell, the axes of the flow distribution plate and the shell are superposed, the flow distribution plate is fixedly connected with the shell, a liquid inlet groove and a liquid outlet groove are arranged on the flow distribution plate, the liquid inlet groove is communicated with the liquid inlet, and the liquid outlet groove is communicated with the liquid outlet; the transmission shaft is rotatably arranged on the shell, the axes of the transmission shaft and the shell are superposed, one end of the transmission shaft extends into the shell, the swash plate, the spherical hinge, the inverted cone-shaped cylinder body and the flow distribution plate are sequentially sleeved on the transmission shaft along the axis direction of the transmission shaft, and the spherical hinge and the inverted cone-shaped cylinder body are in transmission connection with the transmission shaft so as to synchronously rotate with the transmission shaft; the return disc is rotatably sleeved on the spherical hinge, the return disc is arranged below the swash plate and always kept parallel to the swash plate, and a plurality of mounting holes are formed in the return disc along the circumferential direction of the return disc; the plunger assembly comprises a plurality of plunger bodies, each plunger body comprises a plunger, a ball head and a sliding shoe, the sliding shoes correspond to the mounting holes one by one, one sliding shoe is arranged in one mounting hole, the plungers correspond to the inclined plunger hole one by one, one plunger can be arranged in one inclined plunger hole in a sliding mode, and one end, close to the sliding shoe, of the plunger is connected with the sliding shoe through the ball head in a spherical hinge mode.
Preferably, the compact high-efficient type pump of inhaling sound bars in area still includes cylinder liner, does wet bearing and two antifriction bearing, the both ends of transmission shaft respectively through one antifriction bearing rotationally set up in on the casing, the cylinder liner cover is located on the lateral wall of back taper cylinder body, and with the lateral wall fixed connection of back taper cylinder body, just the cylinder liner passes through do wet bearing rotationally support in on the inside wall of casing.
Preferably, the ball pivot with the toper cylinder body all with the transmission shaft passes through the key-type connection, the top nestification of back taper cylinder body set up in the ball pivot, the bottom of back taper cylinder body with the valve plate offsets, just the top of back taper cylinder body with be provided with the elastic component between the inside top of ball pivot.
Preferably, the elastic member is a spring, and the spring is sleeved on the transmission shaft.
Preferably, an oil drainage hole is formed in the side wall of the shell, an oil drainage groove is formed in the outer side wall of the inverted cone-shaped cylinder body, one end of the oil drainage groove is communicated with the inside of the cylinder sleeve, and the other end of the oil drainage groove is communicated with the oil drainage hole.
Preferably, the end of the sound absorbing grid is in a trapezoidal structure, and the top of the sound absorbing grid is in a semicircular structure.
Preferably, the swash plate is a wear-resistant swash plate.
Preferably, each inclined plunger hole is fixedly provided with a copper sleeve, the copper sleeve and the inclined plunger hole are coaxially arranged, and the plunger is slidably arranged in the copper sleeve.
Preferably, the casing includes main part, upper end cover and lower end cover, the both ends of main part be provided with respectively with the inside upper shed that is linked together of main part with the under shed, the upper end cover with the under shed open respectively set up of dismantling in the both ends of main part, in order to respectively the shutoff upper shed and under shed, the one end of transmission shaft rotationally set up in on the upper end cover, the other end of transmission shaft rotationally set up in on the main part.
Preferably, the compact and efficient pump with the sound absorption grating further comprises an upper positioning pin and a lower positioning pin, and the swash plate and the valve plate are fixedly connected with the shell through the upper positioning pin and the lower positioning pin respectively.
Compared with the prior art, the invention has the following technical effects:
the inner side wall of the compact and efficient pump shell with the sound-absorbing grids is provided with the plurality of sound-absorbing grids along the axis direction of the shell, each sound-absorbing grid is arranged along the circumferential direction of the shell, and each sound-absorbing grid protrudes out of the inner side wall of the shell. Inhale the sound bars and effectively blocked the transmission of sound wave, weakened noise transmission intensity, effectively reduced the noise, inhale the sound bars simultaneously and increased the heat radiating area of casing, and then effectively improved the heat dispersion of casing.
In addition, the compact and efficient pump cylinder body with the sound absorption grid is an inverted cone-shaped cylinder body, a plurality of inclined plunger plug holes distributed in a conical shape are formed in the inverted cone-shaped cylinder body along the circumferential direction of the inverted cone-shaped cylinder body, the inclined plunger plug holes correspond to the plungers one by one, and one plunger is slidably mounted in one inclined plunger hole. The inverted cone cylinder body is matched with a plurality of inclined plunger jacks distributed in a conical shape, so that the plunger generates radial centrifugal force favorable for self-suction when rotating, and further the suction phenomenon is effectively avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a first angled schematic view of a compact, high efficiency pump with acoustical grill in accordance with an embodiment of the present invention;
FIG. 2 is a second perspective view of a compact, high efficiency pump with acoustical barrier according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a compact, high efficiency pump with acoustical grill as provided in an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a body provided in an embodiment of the present invention;
fig. 5 is a schematic structural view of a sound-absorbing grill provided in an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of an inverted conical cylinder provided in an embodiment of the present invention;
FIG. 7 is a cross-sectional view of an inverted conical cylinder provided in an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a port plate provided in an embodiment of the present invention.
Description of reference numerals: 1. a main body; 101. an upper opening; 102. a lower opening; 103. an oil drainage hole; 104. a liquid inlet; 105. a liquid outlet; 2. an upper end cover; 3. a lower end cover; 4. a sound absorbing grid; 401. a trapezoidal structure; 402. a semicircular structure; 5. a swash plate; 6. spherical hinge; 7. an inverted cone cylinder body; 701. inclined column plug holes; 702. an oil drainage groove; 8. a copper sleeve; 9. a valve plate; 901. a liquid inlet tank; 902. a liquid outlet groove; 10. a lower locating pin; 11. an elastic member; 12. a drive shaft; 13. a return disk; 14. a plunger; 15. a ball head; 16. a slipper; 17. a cylinder liner; 18. dry and wet bearings; 19. and (6) an upper positioning pin.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a compact and efficient pump with a sound absorption grid, which can reduce noise, improve the heat dissipation performance of a shell and effectively prevent the pump from being vacuumed.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1 to 8, the present embodiment provides a compact and high-efficiency pump with a sound-absorbing grill, including: the sound absorption device comprises a shell, wherein a liquid inlet 104 and a liquid outlet 105 which are communicated with the inside of the shell are arranged on the shell, a plurality of sound absorption grids 4 are arranged on the inner side wall of the shell along the axis direction of the shell, each sound absorption grid 4 is arranged along the circumferential direction of the shell, and each sound absorption grid 4 protrudes out of the inner side wall of the shell; the swash plate 5 is obliquely arranged in the shell, and the swash plate 5 is fixedly connected with the shell; a spherical hinge 6 rotatably disposed inside the housing; the cylinder body 7 is rotationally arranged in the shell, the axes of the cylinder body 7 and the shell are superposed, and a plurality of inclined plunger holes 701 which are distributed in a conical shape are arranged on the cylinder body 7 along the circumferential direction of the cylinder body 7; the flow distribution plate 9 is arranged in the shell, the axes of the flow distribution plate 9 and the shell are coincident, the flow distribution plate 9 is fixedly connected with the shell, a liquid inlet groove 901 and a liquid outlet groove 902 are arranged on the flow distribution plate 9, the liquid inlet groove 901 is communicated with the liquid inlet 104, and the liquid outlet groove 902 is communicated with the liquid outlet 105; the transmission shaft 12 is rotatably arranged on the shell, the axes of the transmission shaft 12 and the shell are overlapped, one end of the transmission shaft 12 extends into the shell, the swash plate 5, the spherical hinge 6, the inverted cone cylinder 7 and the valve plate 9 are sequentially sleeved on the transmission shaft 12 along the axis direction of the transmission shaft 12, and the spherical hinge 6 and the inverted cone cylinder 7 are in transmission connection with the transmission shaft 12 to synchronously rotate with the transmission shaft 12; the return disc 13 is rotatably sleeved on the spherical hinge 6, the return disc 13 is arranged below the swash plate 5, the return disc 13 and the swash plate 5 are always kept parallel, and a plurality of mounting holes are formed in the return disc 13 along the circumferential direction of the return disc 13; the plunger assembly comprises a plurality of plunger bodies, each plunger body comprises a plunger 14, a ball head 15 and a sliding shoe 16, the sliding shoes 16 correspond to the mounting holes one by one, one sliding shoe 16 is arranged in one mounting hole, the plungers 14 correspond to the inclined column plug holes 701 one by one, one plunger 14 can be slidably arranged in one inclined column plug hole 701, and one end, close to the sliding shoe 16, of the plunger 14 is connected with the sliding shoe 16 through the ball head 15 to form a ball hinge 6.
Inhale sound bars 4 and can effectively block the transmission of sound wave, and then can effectively the noise reduction, inhale sound bars 4 simultaneously and increased the heat radiating area of casing, and then effectively improved the heat dispersion of casing. In addition, the inverted cone cylinder 7 is matched with the tapered plunger holes 701, so that the plunger 14 generates a radial centrifugal force beneficial to self-suction when rotating, and further the suction phenomenon can be effectively prevented. The valve plate 9 is matched with the small end of the conical cylinder body, the reference circle diameters of the liquid outlet groove 902 and the liquid inlet groove 901 of the valve plate 9 are reduced, the oil absorption flow rate is reduced, the oil absorption capacity is enhanced, and the noise is lower. At the same time, the diameter of the port plate 9 is correspondingly reduced, and the size of a rear cover for placing the port plate 9 is also reduced, so that the structure of the pump is more compact.
In a specific using process, when the transmission shaft 12 rotates, the plunger 14 stretches back and forth in the inclined plunger hole 701, when the plunger 14 contracts, the inclined plunger hole 701 corresponding to the plunger 14 is communicated with the liquid inlet groove 901, oil enters the inclined plunger hole 701 from the liquid inlet groove 901, when the plunger 14 stretches, the inclined plunger hole 701 corresponding to the plunger 14 is connected with the liquid outlet groove 902, the plunger 14 pushes the oil stored in the inclined plunger hole 701 to be discharged from the liquid outlet groove 902, and the oil absorption and the oil discharge of the actual pump are realized through the reciprocating stretching of the plunger 14.
In this embodiment, the compact and efficient pump with the sound absorption grating further includes a cylinder sleeve 17, a dry-wet bearing 18 and two rolling bearings, two ends of the transmission shaft 12 are respectively rotatably disposed on the housing through one rolling bearing, the cylinder sleeve 17 is sleeved on the outer side wall of the inverted cone-shaped cylinder body 7 and is fixedly connected with the outer side wall of the inverted cone-shaped cylinder body 7, and the cylinder sleeve 17 is rotatably supported on the inner side wall of the housing through the dry-wet bearing 18. The traditional pump structure, the cylinder body passes through the antifriction bearing and supports on the casing, transmission shaft 12 need bear the effect of moment of torsion again at the effect of moment of bending that need bear at the during operation promptly, this has seriously influenced the life of transmission shaft 12, this take the compact high-efficient type pump of sound-absorbing bars adopts dry and wet bearing 18 to support the cylinder body, the overturning moment that can bear when the balance cylinder body rotates, the radial force between cylinder body and transmission shaft 12 has been eliminated, make transmission shaft 12 only need provide the moment of torsion at the during operation, the influence of bending stress has been eliminated, the life of transmission shaft 12 when high-speed rotation has been increased, can guarantee that transmission shaft 12 can operate under high rotational speed for a long time. In addition, the dry and wet bearing 18 is adopted to support the cylinder body, so that mechanical vibration between the transmission shaft 12 and the cylinder body can be eliminated, and the noise is reduced. Compared with a rolling bearing, the dry-wet bearing 18 occupies smaller space, the volume of the hydraulic pump is reduced, the structure of the pump is further compact, and the noise between the bearing and the cylinder body is smaller by adopting the dry-wet bearing 18 than by adopting a traditional rolling bearing.
In this embodiment, specifically, the spherical hinge 6 and the conical cylinder are connected with the transmission shaft 12 through a key, the top end of the inverted conical cylinder 7 is nested in the spherical hinge 6, the bottom end of the inverted conical cylinder 7 abuts against the port plate 9, and an elastic member 11 is arranged between the top end of the inverted conical cylinder 7 and the top end of the interior of the spherical hinge 6. Further, the elastic member 11 is a spring, and the spring is sleeved on the transmission shaft 12. The elastic element 11 provides a spring force for the ball joint 6, and the sliding shoe 16 is pressed against the swash plate 5 by the return plate 13 via the spring force of the ball joint 6.
In this embodiment, an oil drainage hole 103 is formed in the side wall of the housing, an oil drainage groove 702 is formed in the outer side wall of the inverted cone-shaped cylinder 7, one end of the oil drainage groove 702 is communicated with the inside of the cylinder sleeve 17, and the other end of the oil drainage groove is communicated with the oil drainage hole 103. Further, the number of the oil drainage grooves 702 and the oil drainage holes 103 is plural, the oil drainage grooves 702 are uniformly arranged along the circumferential direction of the inverted cone cylinder 7, and the oil drainage holes 103 are arranged along the circumferential direction of the casing. In this embodiment, specifically, the number of the oil drainage grooves 702 is three, and the number of the oil drainage holes 103 is two. More than 70% of pump leakage oil flows out through a friction pair of the cylinder body and the port plate 9, about 15% of pump leakage oil flows out through a friction pair of the sliding shoe 16 and the swash plate 5, and the leakage oil of the sliding shoe 16 and the swash plate 5 enters the oil drainage hole 103 through the three oil drainage grooves 702 on the cylinder body and is finally discharged into the oil tank.
In the present embodiment, specifically, the number of the sound-absorbing grill 4 is four. In fig. 4, the bottom sound-absorbing grill 4 is spaced from the joint surface of the oil distribution pan casing by a distance "b", the distance between adjacent sound-absorbing grilles 4 is "a", and the sound-absorbing grilles 4 are arranged in a ring shape to form the sound-absorbing grill 4. The layout outer diameter of the annular sound-absorbing grid 4 is h, the layout inner diameter of the annular sound-absorbing grid 4 is f, and the layout total height of the sound-absorbing grid 4 is c.
In the present embodiment, the sound-absorbing grille 4 has a trapezoidal structure 401 at the end and a semicircular structure 402 at the top. In fig. 5, the trapezoid angle is phi, the trapezoid height is f, the size of the trapezoid end is e, the top of the sound absorbing grid is a semicircular structure 402 with a diameter of d, and the semicircular structure 402 is tangent to the trapezoidal structure 401.
In the embodiment, specifically, as shown in fig. 7, the taper of the reverse tapered cylinder 7 is 2g, the angle between the axis of the inclined plunger hole 701 and the central axis of the cylinder is g, and the cylinder includes nine inclined plunger holes 701.
In the present embodiment, the swash plate 5 is a wear-resistant swash plate 5. The inner circle and the outer circle of the wear-resistant swash plate 5 are not concentric, the wear-resistant swash plate is made of corrosion-resistant alloy materials, the hardness and the wear resistance of a friction surface are improved through heat treatment, the wear-resistant swash plate 5 is made of corrosion-resistant nitrifiable alloy steel 38CrMoAl, a proper amount of Cr is added into steel to play a role in corrosion resistance, and a proper amount of Al is added into the steel to enable metal to form an oxidation film with a protection effect.
In this embodiment, each inclined plunger hole 701 is fixedly provided with a copper sleeve 8 therein, the copper sleeve 8 and the inclined plunger hole 701 are coaxially arranged, and the plunger 14 is slidably arranged in the copper sleeve 8.
In this embodiment, specifically, the housing includes a main body 1, an upper end cap 2 and a lower end cap 3, an upper opening 101 and a lower opening 102 communicated with the inside of the main body 1 are respectively disposed at two ends of the main body 1, the upper end cap 2 and the lower end cap 3 are respectively detachably disposed at two ends of the main body 1 to respectively block the upper opening 101 and the lower opening 102, one end of the transmission shaft 12 is rotatably disposed on the upper end cap 2, and the other end of the transmission shaft 12 is rotatably disposed on the main body 1.
In this embodiment, specifically, the compact and efficient pump with the sound-absorbing grille further includes an upper positioning pin 19 and a lower positioning pin 10, and the swash plate 5 and the port plate 9 are fixedly connected to the housing through the upper positioning pin 19 and the lower positioning pin 10, respectively.
The following table shows the noise contrast of the acoustical barrier provided by this example with or without
The following table shows the comparison of the temperature of the sound-absorbing grill housing provided in this example with or without
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. A compact high-efficiency pump with a sound absorption grating, comprising:
the sound absorption device comprises a shell, wherein a liquid inlet and a liquid outlet which are communicated with the inside of the shell are formed in the shell, a plurality of sound absorption grids are arranged on the inner side wall of the shell along the axial direction of the shell, each sound absorption grid is arranged along the circumferential direction of the shell, and each sound absorption grid protrudes out of the inner side wall of the shell;
the swash plate is obliquely arranged in the shell and is fixedly connected with the shell;
the spherical hinge is rotatably arranged in the shell;
the cylinder body is rotationally arranged in the shell, the axes of the cylinder body and the shell are superposed, and a plurality of inclined plunger holes which are distributed in a conical shape are arranged on the cylinder body along the circumferential direction of the cylinder body;
the flow distribution plate is arranged in the shell, the axes of the flow distribution plate and the shell are superposed, the flow distribution plate is fixedly connected with the shell, a liquid inlet groove and a liquid outlet groove are arranged on the flow distribution plate, the liquid inlet groove is communicated with the liquid inlet, and the liquid outlet groove is communicated with the liquid outlet;
the transmission shaft is rotatably arranged on the shell, the axes of the transmission shaft and the shell are superposed, one end of the transmission shaft extends into the shell, the swash plate, the spherical hinge, the inverted cone-shaped cylinder body and the flow distribution plate are sequentially sleeved on the transmission shaft along the axis direction of the transmission shaft, and the spherical hinge and the inverted cone-shaped cylinder body are in transmission connection with the transmission shaft so as to synchronously rotate with the transmission shaft;
the return disc is rotatably sleeved on the spherical hinge, the return disc is arranged below the swash plate and always kept parallel to the swash plate, and a plurality of mounting holes are formed in the return disc along the circumferential direction of the return disc;
the plunger assembly comprises a plurality of plunger bodies, each plunger body comprises a plunger, a ball head and a sliding shoe, the sliding shoes correspond to the mounting holes one by one, one sliding shoe is arranged in one mounting hole, the plungers correspond to the inclined plunger hole one by one, one plunger can be arranged in one inclined plunger hole in a sliding mode, and one end, close to the sliding shoe, of the plunger is connected with the sliding shoe through the ball head in a spherical hinge mode.
2. The pump of claim 1, further comprising a cylinder sleeve, a wet and dry bearing, and two rolling bearings, wherein each of the two ends of the transmission shaft is rotatably disposed on the housing through one of the rolling bearings, the cylinder sleeve is disposed on the outer sidewall of the inverted cone cylinder and fixedly connected to the outer sidewall of the inverted cone cylinder, and the cylinder sleeve is rotatably supported on the inner sidewall of the housing through the wet and dry bearing.
3. The pump of claim 1, wherein the ball joint and the tapered cylinder are connected to the transmission shaft by a key, the top of the inverted tapered cylinder is nested in the ball joint, the bottom of the inverted tapered cylinder is abutted against the port plate, and an elastic member is disposed between the top of the inverted tapered cylinder and the top of the ball joint.
4. The pump of claim 3, wherein the resilient member is a spring and the spring is sleeved on the shaft.
5. The pump of claim 1, wherein an oil drain hole is formed in the side wall of the casing, an oil drain groove is formed in the outer side wall of the inverted cone-shaped cylinder body, one end of the oil drain groove is communicated with the inside of the cylinder sleeve, and the other end of the oil drain groove is communicated with the oil drain hole.
6. The pump of claim, wherein the end of the sound-absorbing grill is trapezoidal and the top of the sound-absorbing grill is semicircular.
7. The pump of claim 1, wherein the swash plate is a wear-resistant swash plate.
8. The pump of claim 1, wherein each angled plunger bore is fixedly disposed with a copper sleeve disposed coaxially with the angled plunger bore, and wherein the plunger is slidably disposed within the copper sleeve.
9. The pump of claim 1, wherein the casing comprises a main body, an upper cover and a lower cover, the main body has an upper opening and a lower opening at two ends, the upper opening and the lower opening are connected to the inside of the main body, the upper cover and the lower cover are detachably mounted at two ends of the main body to block the upper opening and the lower opening, respectively, one end of the transmission shaft is rotatably mounted on the upper cover, and the other end of the transmission shaft is rotatably mounted on the main body.
10. The pump of claim 1, further comprising an upper and a lower locating pin, wherein the swash plate and the port plate are fixedly connected to the housing by the upper and lower locating pins, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011456842.XA CN112483342A (en) | 2020-12-10 | 2020-12-10 | Compact high-efficient type pump of sound bars is inhaled in area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011456842.XA CN112483342A (en) | 2020-12-10 | 2020-12-10 | Compact high-efficient type pump of sound bars is inhaled in area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112483342A true CN112483342A (en) | 2021-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011456842.XA Withdrawn CN112483342A (en) | 2020-12-10 | 2020-12-10 | Compact high-efficient type pump of sound bars is inhaled in area |
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| Country | Link |
|---|---|
| CN (1) | CN112483342A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320806A (en) * | 2022-01-06 | 2022-04-12 | 佛山市液斯源液压制造有限公司 | Hydraulic pump shell and machine core using same |
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Application publication date: 20210312 |