CN116906295A - Efficient linear motion double-crankshaft piston structure, compressor and vacuum pump - Google Patents
Efficient linear motion double-crankshaft piston structure, compressor and vacuum pump Download PDFInfo
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- CN116906295A CN116906295A CN202311023719.2A CN202311023719A CN116906295A CN 116906295 A CN116906295 A CN 116906295A CN 202311023719 A CN202311023719 A CN 202311023719A CN 116906295 A CN116906295 A CN 116906295A
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- 230000033001 locomotion Effects 0.000 title claims abstract description 49
- 239000010985 leather Substances 0.000 claims abstract description 52
- 230000005540 biological transmission Effects 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 230000017525 heat dissipation Effects 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 abstract description 11
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
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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
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
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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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
-
- 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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
The invention relates to the technical field of connecting rod piston equipment, and particularly discloses a high-efficiency linear motion double-crankshaft piston structure, a compressor and a vacuum pump, wherein the double-crankshaft piston structure comprises a double-shaft motor, and the double-crankshaft piston structure comprises the following components: the device comprises a connecting rod, a first eccentric wheel and a transverse sliding guide assembly, wherein a rotating shaft connecting groove is formed in one side of the first eccentric wheel, a first eccentric convex column is arranged on the other side of the first eccentric wheel, a bearing seat is arranged in the middle of the connecting rod, a first bearing is arranged in the bearing seat, a second eccentric wheel is arranged in the first bearing, a second bearing is arranged on one side of the second eccentric wheel, a second eccentric convex column is arranged on the other side of the second eccentric wheel, eccentric arrangement is formed between the second eccentric wheel and the second bearing, the first eccentric convex column is connected with the second bearing, leather cup assemblies are arranged at the upper end and the lower end of the connecting rod, and the second eccentric convex column is connected with the transverse sliding guide assembly; the high-efficiency linear motion double-crankshaft piston structure, the compressor and the vacuum pump are better in sealing performance, and the top gap can be further reduced, so that the volumetric efficiency is improved.
Description
Technical Field
The invention relates to the technical field of connecting rod pistons, in particular to a high-efficiency linear motion double-crankshaft piston structure, a compressor and a vacuum pump.
Background
Air compressors and vacuum pumps typically employ a piston structure to control the direction of the air flow to achieve air compression or air evacuation.
The reciprocating piston compressor as disclosed in Chinese patent CN102734110A includes one crank, one connecting rod, one piston and one cylinder, the piston reciprocates inside the cylinder along the axis of the cylinder, the crank pin of the crank rotates circumferentially around the rotation center of the crank, one oscillating rod is set to oscillate around the oscillation center and the connecting rod is connected to the oscillating rod; the device is characterized in that a secondary connecting rod is further arranged, one end of the secondary connecting rod is rotatably connected with a crank pin of a crank, and the other end of the secondary connecting rod is rotatably connected with the swing rod.
However, in the prior art, a swinging piston structure is mainly adopted, and a certain swinging angle is needed through a swinging rod in the movement process, so that the piston is driven to reciprocate up and down, the piston can incline along with the swinging rod in the swinging process, if the swinging angle is too large, the sealing leakage between the piston and the cylinder wall is easily caused, the problem can be solved by enlarging a leather cup, and when the leather cup is too large, the top gap of the compressor is designed to be larger, so that the volumetric efficiency of the compressor is lower.
Therefore, there is a need for a piston that moves linearly, without the need for a pendulum type piston structure.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a double-crankshaft piston structure with high efficiency and linear motion, a compressor and a vacuum pump, and aims to solve the problems in the prior art.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a high-efficient rectilinear motion's double-crankshaft piston structure, it has biax motor, be provided with biax rotor in the biax motor, transmission casing is all installed to biax rotor's output shaft department, double-crankshaft piston structure includes:
the rotary shaft connecting groove is formed in one side of the first eccentric wheel, the first eccentric convex column is arranged on the other side of the first eccentric wheel, and the rotor connecting groove is connected with an output shaft of the rotor;
the middle part of the connecting rod is provided with a bearing seat, a first bearing is arranged in the bearing seat, a second eccentric wheel is arranged in the first bearing, a second bearing is arranged on one side of the second eccentric wheel, a second eccentric convex column is arranged on the other side of the second eccentric wheel, the second eccentric wheel and the second bearing are eccentrically arranged, the first eccentric convex column is connected with the second bearing, and leather cup components are arranged at the upper end and the lower end of the connecting rod;
the transverse sliding guide assembly is arranged on the inner wall of the transmission shell, and the second eccentric convex column is connected with the transverse sliding guide assembly;
and the piston cylinder assembly is arranged at the upper end and the lower end of the transmission shell, and the end parts of the connecting rods respectively extend into the piston cylinder assembly so as to enable the leather cup assembly to do linear reciprocating motion in the piston cylinder assembly.
The invention has the advantages that the double-shaft rotor drives the first eccentric wheel to rotate, the first eccentric convex column drives the second eccentric wheel to rotate through the eccentrically arranged second bearing, so that the second eccentric convex column on the second eccentric wheel drives the connecting rod to reciprocate, thereby forming a double-crankshaft structure between the first eccentric wheel and the second eccentric wheel, simultaneously, under the action of the transverse sliding guide assembly, the second eccentric convex column makes linear reciprocating motion in the transverse sliding guide assembly, so that the connecting rod makes up-down linear motion, and the connecting rod is prevented from swinging, thereby ensuring that the piston cylinder assembly does not need swinging and can do linear reciprocating motion, the size design of the leather cup assembly can realize sealing only by customizing according to the inner size of the piston cylinder assembly without considering the sealing performance in the swinging process, ensuring that the clearance between the leather cup assembly and the piston cylinder assembly is uniform, the sealing performance is better, and the top clearance can be further reduced, and the volume efficiency is improved.
Further, be provided with the horizontal location backup pad in the drive casing, horizontal location backup pad one side is installed on the motor, horizontal slip direction subassembly includes horizontal locating plate, horizontal constant head tank has been seted up in the horizontal locating plate, horizontal slider is installed to the embedding in the horizontal constant head tank, install the third bearing in the horizontal slider, the eccentric projection of second is connected with the third bearing.
After the further structure is adopted, the transverse sliding block slides in the transverse positioning groove under the drive of the second eccentric convex column to play a guiding role, so that the connecting rod is driven by the first eccentric wheel and the second eccentric wheel to perform vertical linear motion, the connecting rod does not need to do swinging motion, and the structure is more stable.
Further, an eccentric groove is formed in one side, close to the second bearing, of the second eccentric wheel, and the second bearing is embedded in the eccentric groove.
After adopting above-mentioned further structure, make to form double crank shaft structure between horizontal slider, first eccentric wheel and the second eccentric wheel, the connecting rod reciprocating motion in-process is more stable, can also make the connecting rod do upper and lower rectilinear motion, guaranteed that the clearance between leather cup subassembly and the piston cylinder subassembly is even, the leakproofness is better, and the top clearance also can be made very little to volumetric efficiency has been improved.
Further, the leather cup assembly comprises a leather cup mounting seat, one side of the leather cup mounting seat is connected with the connecting rod, a first valve plate is mounted on the other side of the leather cup mounting seat, a leather cup is arranged between the first valve plate and the leather cup mounting seat, the outer edge of the leather cup is contacted with the inner wall of the piston cylinder assembly, first air holes which are mutually communicated are formed in the first valve plate and the leather cup mounting seat, and a first valve plate corresponding to the first air holes is mounted on the first valve plate.
After adopting above-mentioned further structure, seal through the inner wall of leather cup and piston cylinder subassembly, when the connecting rod drove the reciprocal rectilinear motion of leather cup subassembly, advance air inlet or give vent to anger through first valve plate and first air vent match, compare in rocking reciprocating motion, efficiency is higher, prevents sealed leakage.
Further, the piston cylinder assembly comprises a cylinder sleeve arranged at the upper end and the lower end of the transmission shell, the rubber cup mounting seat is arranged in the cylinder sleeve, the outer edge of the rubber cup is contacted with the inner wall of the cylinder sleeve, the cylinder cover is arranged at one end, far away from the rubber cup mounting seat, of the cylinder sleeve, an air pipe is arranged on the side face of the cylinder cover, a second valve plate is arranged between the cylinder sleeve and the cylinder cover, a second air hole is formed in the second valve plate, and a second valve plate is arranged on the second air hole.
After adopting above-mentioned further structure, when the leather cup subassembly is straight line reciprocating motion, the piston cylinder subassembly is given vent to anger or is admitted air through second valve plate and second gas pocket, compares in rocking reciprocating motion, and efficiency is higher, prevents sealed leakage.
Further, the outer walls of the cylinder sleeve and the cylinder cover are provided with heat dissipation fins.
After adopting above-mentioned further structure, because inside air is exothermic after compressing, the heat dissipation wing can dispel the heat to the piston cylinder subassembly, improves operating efficiency.
Furthermore, the upper end and the lower end of the inner wall of the transverse positioning groove are respectively provided with a positioning chute, the upper end and the lower end of the transverse sliding block are respectively provided with a steel ball groove which is transversely arranged, steel balls are arranged in the steel ball grooves, and the steel balls are clamped in the positioning chute.
After the further structure is adopted, through the cooperation of the positioning sliding groove and the steel balls, the transverse sliding block is more stable in the sliding process of the transverse positioning groove, and further ensures that the linear guide is performed under high-speed sliding, so that the phenomenon of deviation is prevented.
Further, the end part of the double-shaft rotor, which is close to the output shaft, is provided with a cooling fan blade.
After the further structure is adopted, the radiating fan blade radiates heat inside the transmission shell, and meanwhile, the airflow inside the transmission shell is improved, so that air sucked by the leather cup assembly when the leather cup assembly makes linear reciprocating motion in the piston cylinder assembly is supplied.
A compressor comprises the double-crankshaft piston structure; the formed compressor utilizes the leather cup component to do linear reciprocating motion in the piston cylinder component, improves the volumetric efficiency of the compressor, and compared with the traditional compressor, the compressor has higher compression efficiency and lower energy consumption under the same specification, and the service life of the leather cup component is longer.
A vacuum pump comprises the double-crankshaft piston structure; the formed vacuum pump utilizes the leather cup component to do linear reciprocating motion in the piston cylinder component, improves the volumetric efficiency of the compressor, and compared with the traditional compressor, the compressor has higher compression efficiency and lower energy consumption under the same specification, and the service life of the leather cup component is longer.
Drawings
Fig. 1 is a schematic perspective view of a dual-crankshaft piston structure according to a first embodiment of the present invention.
Fig. 2 is a second perspective view of a dual-crankshaft piston structure according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of an internal structure of a double-crankshaft piston structure according to a first embodiment of the present invention.
Fig. 4 is a schematic diagram of an exploded structure of the connecting rod, the transverse positioning plate, the transverse slider, the first eccentric wheel and the second eccentric wheel according to the first embodiment.
Fig. 5 is a schematic perspective view of a first eccentric wheel according to the first embodiment.
Fig. 6 is a schematic perspective view of a second eccentric wheel according to the first embodiment.
Fig. 7 is a schematic cross-sectional view of a double-crankshaft piston structure according to the first embodiment.
Fig. 8 is a schematic cross-sectional structure of a piston cylinder assembly of the first embodiment.
Fig. 9 is a schematic structural view of a transverse positioning plate and a transverse slider according to a second embodiment of the present invention.
In the figure: the double-shaft motor 1, the transmission shell 2, the piston cylinder assembly 3, the connecting rod 4, the transverse positioning support plate 5, the transverse positioning plate 6, the transverse sliding block 7, the first eccentric wheel 8, the rotor 9, the bearing seat 10, the first bearing 11, the first eccentric convex column 12, the second eccentric wheel 13, the second bearing 14, the second eccentric convex column 15, the third bearing 16, the transverse positioning groove 17, the cooling fan blade 18, the eccentric groove 19, the cylinder sleeve 20, the cooling fin 21, the cup mounting seat 22, the first valve plate 23, the first air hole 24, the first valve plate 25, the cup 26, the cylinder cover 27, the air pipe 28, the second valve plate 29, the second air hole 30, the second valve plate 31, the positioning sliding groove 32 and the steel ball 33.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings. The description of these embodiments is provided to assist understanding of the present invention, but is not intended to limit the present invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1
In combination with the double-crankshaft piston structure of the efficient linear motion shown in fig. 1 to 8, which has a double-shaft motor 1, a double-shaft rotor 9 is disposed in the double-shaft motor 1, and the output shaft of the double-shaft rotor 9 is provided with a transmission housing 2, the double-crankshaft piston structure includes: the piston cylinder assembly 3, the connecting rod 4, the first eccentric wheel 8 and the transverse sliding guide assembly, wherein a rotating shaft connecting groove 18 is formed in one side of the first eccentric wheel 8, a first eccentric convex column 12 is formed in the other side of the first eccentric wheel, and the rotor connecting groove 18 is connected with an output shaft of the rotor 9; the middle part of the connecting rod 4 is provided with a bearing seat 10, a first bearing 11 is arranged in the bearing seat 10, a second eccentric wheel 13 is arranged in the first bearing 11, a second bearing 14 is arranged on one side of the second eccentric wheel 13, a second eccentric convex column 15 is arranged on the other side of the second eccentric wheel 13, the second eccentric wheel 13 and the second bearing 14 are eccentrically arranged, the first eccentric convex column 12 is connected with the second bearing 14, and leather cup components are arranged at the upper end and the lower end of the connecting rod 4; the transverse guide component is arranged on the inner wall of the transmission shell 2, and the second eccentric convex column 15 is connected with the transverse sliding guide component; the piston cylinder assembly 3 is arranged at the upper end and the lower end of the transmission shell 2, and the end parts of the connecting rods 4 respectively extend into the piston cylinder assembly 3 so as to enable the leather cup assembly to do linear reciprocating motion in the piston cylinder assembly 3; according to the embodiment, the double-shaft rotor 9 drives the first eccentric wheel 8 to rotate, the first eccentric convex column 12 drives the second eccentric wheel 13 to rotate through the second eccentrically arranged bearing 14, and the second eccentric convex column 15 on the second eccentric wheel 13 drives the connecting rod 4 to reciprocate, so that a double-crankshaft structure is formed between the first eccentric wheel 8 and the second eccentric wheel 13, meanwhile, under the action of the transverse sliding guide assembly, the second eccentric convex column 15 makes linear reciprocating motion in the transverse sliding guide assembly, the connecting rod 4 makes up-and-down linear motion, and the connecting rod 4 is prevented from swinging, so that the piston cylinder assembly 3 does not need to swing and can do linear reciprocating motion, the sealing can be realized only by customizing according to the inner size of the piston cylinder assembly 3, the sealing performance in the swinging process is not needed to be considered, the gap between the cup assembly and the piston cylinder assembly 3 is ensured to be uniform, the sealing performance is better, the top gap can be further reduced, and the volume efficiency is improved.
As shown in fig. 2 to 4, a transverse positioning support plate 5 is arranged in the transmission housing 2 of the embodiment, one side of the transverse positioning support plate 5 is installed on the motor 1, the transverse sliding guide assembly comprises a transverse positioning plate 6, a transverse positioning groove 17 is formed in the transverse positioning plate 6, a transverse sliding block 7 is embedded and installed in the transverse positioning groove 17, a third bearing 16 is installed in the transverse sliding block 7, and a second eccentric convex column 15 is connected with the third bearing 16; the transverse sliding block 7 slides in the transverse positioning groove 17 under the drive of the second eccentric convex column 15, so that a guiding effect is achieved, the connecting rod 4 is driven by the first eccentric wheel 8 and the second eccentric wheel 13 to perform vertical linear motion, the connecting rod 4 does not need to do swinging motion, and the structure is more stable.
As shown in fig. 6, an eccentric groove 19 is formed on one side of the second eccentric wheel 13, which is close to the second bearing 14, in this embodiment, the second bearing 14 is embedded in the eccentric groove 19, so that a double-crankshaft structure is formed among the transverse sliding block 7, the first eccentric wheel 8 and the second eccentric wheel 13, the connecting rod 4 is more stable in the reciprocating motion process, the connecting rod 4 can also be made to perform up-down linear motion, the uniform gap between the leather cup assembly and the piston cylinder assembly 3 is ensured, the tightness is better, and the top gap can also be made very small, thereby improving the volumetric efficiency.
Referring to fig. 7 and 8, the cup assembly of the present embodiment includes a cup mounting seat 22, one side of the cup mounting seat 22 is connected with a connecting rod 4, a first valve plate 23 is mounted on the other side, a cup 26 is disposed between the first valve plate 23 and the cup mounting seat 22, an outer edge of the cup 26 contacts with an inner wall of the piston cylinder assembly 3, first air holes 24 which are mutually communicated are formed on the first valve plate 23 and the cup mounting seat 22, and a first valve plate 25 corresponding to the first air holes 24 is mounted on the first valve plate 23; the sealing is carried out through the inner wall of the leather cup 26 and the piston cylinder assembly 3, when the connecting rod 4 drives the leather cup assembly to reciprocate in a linear motion, the first valve plate 23 is matched with the first air hole 24 to carry out air inlet or air outlet, and compared with swinging reciprocating motion, the efficiency is higher, and sealing leakage is prevented.
The piston cylinder assembly 3 comprises a cylinder sleeve 20 arranged at the upper end and the lower end of the transmission shell 2, a leather cup mounting seat 22 is arranged in the cylinder sleeve 20, the outer edge of a leather cup 26 is contacted with the inner wall of the cylinder sleeve 20, a cylinder cover 27 is arranged at one end, far away from the leather cup mounting seat 22, of the cylinder sleeve 20, an air pipe 28 is arranged at the side surface of the cylinder cover 27, a second valve plate 29 is arranged between the cylinder sleeve 20 and the cylinder cover 27, a second air hole 30 is arranged on the second valve plate 29, and a second valve plate 31 is arranged on the second air hole 30; when the cup assembly makes a linear reciprocating motion, the piston cylinder assembly 3 performs air outlet or air inlet through the second valve plate 29 and the second air hole 30, and compared with a swinging reciprocating motion, the efficiency is higher, and sealing leakage is prevented.
The outer walls of the cylinder liner 20 and the cylinder cover 27 of the present embodiment are provided with heat dissipation fins 21; the heat dissipation fin 21 can dissipate heat of the piston cylinder assembly 3 due to heat dissipation of the air in the piston cylinder assembly after compression, and operation efficiency is improved.
It is worth to say that the end of the double-shaft rotor 9 close to the output shaft is provided with a cooling fan blade 18; the heat dissipation fan blade 18 dissipates heat inside the driving housing 2, and improves the air flow inside so as to allow air sucked by the leather cup assembly when the leather cup assembly makes linear reciprocating motion in the piston cylinder assembly 3.
Example two
As shown in fig. 9, the difference between the second embodiment and the first embodiment is that the upper and lower ends of the inner wall of the transverse positioning groove 17 are both provided with positioning sliding grooves 32, the upper and lower ends of the transverse sliding block 7 are both provided with steel ball grooves which are transversely arranged, steel balls 33 are arranged in the steel ball grooves, and the steel balls 33 are clamped in the positioning sliding grooves 32; through the cooperation of the positioning chute 32 and the steel balls 33, the transverse sliding block 7 is more stable in the sliding process of the transverse positioning groove 17, and further ensures that the linear guide is performed under high-speed sliding, so that the phenomenon of deviation is prevented.
Example III
A compressor comprises the double-crankshaft piston structure; the formed compressor utilizes the leather cup component to do linear reciprocating motion in the piston cylinder component 3, improves the volumetric efficiency of the compressor, and compared with the traditional compressor, the compressor has higher compression efficiency and lower energy consumption under the same specification, and the service life of the leather cup component is longer, so that the compressor is applicable to compressors from low pressure to high pressure.
It should be noted that, in the compressor of this embodiment, the first valve plate 25 is located at one end of the first valve plate 23 close to the second valve plate 29, the second valve plate 31 is located at one end of the second valve plate 29 close to the air pipe 28, and compressed air is continuously output from the air pipe 28 during the linear reciprocating motion of the cup assembly.
Example IV
A vacuum pump comprises the double-crankshaft piston structure; the formed vacuum pump utilizes the leather cup component to do linear reciprocating motion in the piston cylinder component 3, so that the volumetric efficiency of the compressor is improved, compared with the traditional compressor, the compression efficiency is higher, the energy consumption is reduced under the same specification, and the service life of the leather cup component is longer, so that the vacuum pump can be suitable for vacuum pumps from low pressure to high pressure.
It should be noted that, the difference between the fourth embodiment and the third embodiment is that the first valve plate 25 is located on the side of the first valve plate 23 close to the connecting rod 4, and the second valve plate 31 is located on the side of the second valve plate 29 close to the first valve plate 23, so that the air tube 28 continuously draws air into the piston cylinder assembly 3, thereby performing vacuum pumping.
The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, and yet fall within the scope of the invention.
Claims (10)
1. The utility model provides a high-efficient rectilinear motion's double-crankshaft piston structure, it has biax motor (1), be provided with biax rotor (9) in biax motor (1), transmission casing (2) are all installed in the output shaft department of biax rotor (9), its characterized in that, double-crankshaft piston structure includes:
the rotary shaft type motor comprises a first eccentric wheel (8), wherein a rotary shaft connecting groove (18) is formed in one side of the first eccentric wheel (8), a first eccentric convex column (12) is formed in the other side of the first eccentric wheel, and the rotor connecting groove (18) is connected with an output shaft of a rotor (9);
the connecting rod (4), the middle part of connecting rod (4) is provided with bearing frame (10), install first bearing (11) in bearing frame (10), install second eccentric wheel (13) in first bearing (11), second eccentric wheel (14) are installed to second eccentric wheel (13) one side, and second eccentric projection (15) are installed to the opposite side, be eccentric setting between second eccentric wheel (13) and second bearing (14), first eccentric projection (12) are connected with second bearing (14), the upper and lower extreme of connecting rod (4) all is provided with the leather cup subassembly;
the transverse sliding guide assembly is arranged on the inner wall of the transmission shell (2), and the second eccentric convex column (15) is connected with the transverse sliding guide assembly;
the piston cylinder assembly (3) is arranged at the upper end and the lower end of the transmission shell (2), and the end parts of the connecting rods (4) respectively extend into the piston cylinder assembly (3) so as to enable the leather cup assembly to do linear reciprocating motion in the piston cylinder assembly (3).
2. The efficient linear motion double-crankshaft piston structure according to claim 1, wherein a transverse positioning support plate (5) is arranged in the transmission shell (2), one side of the transverse positioning support plate (5) is installed on the motor (1), the transverse sliding guide assembly comprises a transverse positioning plate (6), a transverse positioning groove (17) is formed in the transverse positioning plate (6), a transverse sliding block (7) is embedded in the transverse positioning groove (17), a third bearing (16) is installed in the transverse sliding block (7), and the second eccentric convex column (15) is connected with the third bearing (16).
3. A high efficiency linear motion double crankshaft piston structure according to claim 2, characterized in that the side of the second eccentric wheel (13) close to the second bearing (14) is provided with an eccentric groove (19), and the second bearing (14) is embedded and mounted in the eccentric groove (19).
4. A dual-crankshaft piston structure with high-efficiency linear motion according to claim 3, characterized in that, the leather cup assembly comprises a leather cup mounting seat (22), one side of the leather cup mounting seat (22) is connected with a connecting rod (4), a first valve plate (23) is arranged on the other side of the leather cup mounting seat, a leather cup (26) is arranged between the first valve plate (23) and the leather cup mounting seat (22), the outer edge of the leather cup (26) is contacted with the inner wall of the piston cylinder assembly (3), a first air hole (24) which is mutually communicated is formed in the first valve plate (23) and the leather cup mounting seat (22), and a first valve plate (25) corresponding to the first air hole (24) is arranged on the first valve plate (23).
5. The efficient linear motion double-crankshaft piston structure according to claim 4, wherein the piston cylinder assembly (3) comprises a cylinder sleeve (20) arranged at the upper end and the lower end of a transmission shell (2), a leather cup mounting seat (22) is arranged in the cylinder sleeve (20), the outer edge of a leather cup (26) is in contact with the inner wall of the cylinder sleeve (20), a cylinder cover (27) is arranged at one end, far away from the leather cup mounting seat (22), of the cylinder sleeve (20), an air pipe (28) is arranged at the side surface of the cylinder cover (27), a second valve plate (29) is arranged between the cylinder sleeve (20) and the cylinder cover (27), a second air hole (30) is formed in the second valve plate (29), and a second valve plate (31) is arranged on the second air hole (30).
6. The efficient linear motion double-crankshaft piston structure according to claim 5, wherein heat dissipation fins (21) are arranged on the outer walls of the cylinder sleeve (20) and the cylinder cover (27).
7. The efficient linear motion double-crankshaft piston structure according to claim 2, wherein the upper end and the lower end of the inner wall of the transverse positioning groove (17) are provided with positioning sliding grooves (32), the upper end and the lower end of the transverse sliding block (7) are provided with steel ball grooves which are transversely arranged, steel balls (33) are arranged in the steel ball grooves, and the steel balls (33) are clamped in the positioning sliding grooves (32).
8. A high efficiency linear motion double crankshaft piston structure according to claim 1, characterized in that the end of the double shaft rotor (9) close to the output shaft is provided with cooling fan blades (18).
9. A compressor comprising a double crankshaft piston structure according to any one of claims 1 to 8.
10. A vacuum pump comprising a double crankshaft piston structure according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311023719.2A CN116906295B (en) | 2023-08-15 | 2023-08-15 | Efficient linear motion double-crankshaft piston structure, compressor and vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311023719.2A CN116906295B (en) | 2023-08-15 | 2023-08-15 | Efficient linear motion double-crankshaft piston structure, compressor and vacuum pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116906295A true CN116906295A (en) | 2023-10-20 |
| CN116906295B CN116906295B (en) | 2024-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311023719.2A Active CN116906295B (en) | 2023-08-15 | 2023-08-15 | Efficient linear motion double-crankshaft piston structure, compressor and vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116906295B (en) |
Citations (7)
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| WO2015086458A1 (en) * | 2013-12-09 | 2015-06-18 | Nuovo Pignone Srl | Reciprocating compressor with composite material components |
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| CN108757382A (en) * | 2018-06-08 | 2018-11-06 | 华中科技大学 | It is a kind of to dynamic formula linear compressor |
| CN108979998A (en) * | 2017-06-01 | 2018-12-11 | 上海银盾医疗科技有限公司 | The method of piston is positioned in piston pump and piston pump |
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| CN1637281A (en) * | 2003-12-23 | 2005-07-13 | Meta发动机和能量技术公司 | Piston compressor |
| CN101634287A (en) * | 2009-08-03 | 2010-01-27 | 浙江鸿友压缩机制造有限公司 | Linear guide device of reciprocating compressor |
| CN101737297A (en) * | 2010-01-16 | 2010-06-16 | 浙江鸿友压缩机制造有限公司 | Reciprocating-piston type oil-less air compressor |
| WO2015086458A1 (en) * | 2013-12-09 | 2015-06-18 | Nuovo Pignone Srl | Reciprocating compressor with composite material components |
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| CN116906295B (en) | 2024-06-07 |
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