CN109751223A - A kind of air compressor machine and its piston structure - Google Patents
A kind of air compressor machine and its piston structure Download PDFInfo
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- CN109751223A CN109751223A CN201910138211.4A CN201910138211A CN109751223A CN 109751223 A CN109751223 A CN 109751223A CN 201910138211 A CN201910138211 A CN 201910138211A CN 109751223 A CN109751223 A CN 109751223A
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- 238000007789 sealing Methods 0.000 claims abstract description 66
- 230000005484 gravity Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001914 calming effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
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- 238000012423 maintenance Methods 0.000 description 1
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Abstract
The invention discloses a kind of air compressor machine and its piston structures, it is related to air compressor machine technical field, its key points of the technical solution are that: the connecting rod that piston structure includes the piston of two coaxial arrangements, is fixedly connected with two pistons, the piston outer wall is coaxially fixed with seal assembly, the seal assembly includes two sealing rings being axially arranged along piston, the sealing ring has elasticity, the outer edge of two sealing rings is bent to the direction mutually deviated from, two sealing rings are along the direction mutually deviated from flared, and the outer edge of the sealing ring is for abutting cylinder inner wall.By the sealing ring of setting bi-directional symmetrical, the sealing effect between piston and cylinder is preferable for this air compressor machine and its piston structure, guarantees air compressor machine working efficiency with higher；Sealing ring, air-intake valve plate on piston can be dismounted easily；Crankshaft can be dismounted easily with connecting rod piston component, cabinet, and stability when compressor operation is high.
Description
Technical field
The present invention relates to air compressor machine technical field, in particular to a kind of air compressor machine and its piston structure.
Background technique
Air compressor machine is the equipment for preparing compressed air, and current air compressor machine in the form of piston is most widely used.Piston type pneumatic
Air compressor machine belongs to positive displacement compressor, and piston type air compressor is to be moved reciprocatingly in cylinder using crankshaft band piston, and match
The intake valve of one-way air inlet, the exhaust valve of one-way exhaust are closed, the gas in cylinder chamber is made to be compressed and be constantly be generated compression
The equipment of air.
To disclose a kind of double cylinder double acting straight for the Chinese utility model patent that existing Authorization Notice No. is CN203081685U
Line reciprocating air compressor, the two sides of crankcase are symmetrical arranged there are two double-acting cylinder, and the piston in double-acting cylinder passes through one
Root piston rod is fixedly connected, one end of connecting rod hingedly on the piston rod, the other end be hinged on crankshaft, each double-acting cylinder
Upper and lower side is provided with valve board assembly, is provided with cylinder head outside the valve board assembly on the outside of each double-acting cylinder, on valve board assembly
It is respectively provided with air through hole and exhaust hole, air intake valve and drain tap are provided in each air through hole and exhaust hole, often
The air inlet and exhaust outlet being connected to air intake valve and drain tap are provided on the side wall of a double-acting cylinder.
Referring to Fig.1, existing piston 1 is slidingly sealed by piston ring 10 and the foundation of 51 inner wall of cylinder, and piston ring 10 is general
For the graphite material of hard, piston ring 10 has a small amount of elasticity, and piston ring 10 is to meet dismounting to be typically provided notch 101.Work as work
After plug ring 10 is packed into cylinder 51, piston ring 10 is closed notch 101 under the position-limiting action of 51 inner wall of cylinder；But piston 1 is in cylinder
When moving reciprocatingly in 51, there is the possibility of the gap leakage from notch 101 in the gas in cylinder 51, can reduce air compressor machine
Working efficiency.
Summary of the invention
In view of the deficienciess of the prior art, the first object of the present invention is to provide a kind of piston structure, gas in cylinder
Body is not easy to leak, and guarantees air compressor machine working efficiency with higher.
Above-mentioned technical purpose of the invention has the technical scheme that a kind of piston structure, including work
Plug, the piston outer wall are coaxially fixed with seal assembly, and the seal assembly includes two sealing rings being axially arranged along piston,
The sealing ring has elasticity, and the outer edge of two sealing rings is bent to the direction mutually deviated from, two sealing rings
Along the direction mutually deviated from flared, the outer edge of the sealing ring is for abutting cylinder inner wall.
Through the above technical solutions, when the direction of piston air into compression cylinder is mobile, close to cylinder inner cavity direction
Sealing ring rise main sealing function can generate the change extended out in the sealing ring of flared under the action of inner pressure of air cylinder
Shape trend makes the edge of sealing ring further push against cylinder inner wall, plays preferable sealing effect.With conventional notched piston
The case where ring is compared, and sealing ring does not set opening, then the gas in cylinder is not present from opening leaks, sealing ring is with higher close
Feng Xing guarantees air compressor machine working efficiency with higher.
Preferably, two sealing rings are identical and separable.
Through the above technical solutions, identical two sealing rings have good interchangeability, one seal wears
When seriously needing to renew, the single sealing ring is replaced, save the cost is conducive to；And single sealing ring more integrally formed pair
To leather cup compared to being easier to manufacture, cost is relatively low.
Preferably, the piston is equipped with the boss one placed for sealing ring, and the boss one axially penetrates through work along piston
It fills in, has been bolted pressure ring on the piston, sealing ring is pressed in boss one by the pressure ring.
Through the above technical solutions, sealing ring is pressed in boss one by pressure ring, the fixation of sealing ring is completed；Pressure ring is torn open
After removing, sealing ring can be dismounted easily.
Preferably, several air inlets are offered on the piston, the air inlet runs through the axial ends of piston, the work
Plug is towards being provided with air-intake valve plate on the end face in cylinder, be threaded with fixing bolt, and the air-intake valve plate is by air inlet
Aperture covers, and offers the mounting hole passed through for fixing bolt on the air-intake valve plate, the fixing bolt limits air-intake valve plate
On piston, the air-intake valve plate has along the axial direction of piston for the gap moved.
Through the above technical solutions, this piston structure carries out air inlet by the way of piston intake, with conventional cylinder head into
The mode of gas is compared, and the runner of gas is more reasonable, the structure complexity of cylinder head can be also reduced, convenient for the production system of cylinder head
It makes.
Preferably, the fixing bolt includes positioned at the stage portion twisted between head and thread segment, and the stage portion passes through end face
Piston is abutted, the stage portion is arranged in mounting hole, and the stubborn head of the fixing bolt can not pass through mounting hole.
Through the above technical solutions, after tightening fixing bolt on piston, the removable gap of air-intake valve plate also it has been determined that
Personnel need not adjust the scope of activities of air-intake valve plate, convenient for the assembling of air-intake valve plate and piston.
It preferably, further include the connecting rod for being fixedly connected with two pistons there are two the piston coaxial settings；The connecting rod
Two are arranged in parallel with, rotation is provided with rocking bar on the connecting rod, and the rocking bar is located between two connecting rods, sets on the rocking bar
There is the connecting hole for connecting with crank rotation, the mesoporous for avoiding crankshaft is equipped on two connecting rods.
Through the above technical solutions, the special piston link assembly of two piston composition linear reciprocal air compressor machines, connection
Hole is used to wear the crank-pin of crankshaft；When the crank shaft rotates, crankshaft drives connecting rod to do reciprocal fortune along the axial direction of cylinder by rocking bar
It is dynamic.
The second object of the present invention is to provide a kind of air compressor machine, and cylinder interior gas is not easy to leak, and guarantees that air compressor machine has
Higher working efficiency.
Above-mentioned technical purpose of the invention has the technical scheme that a kind of air compressor machine, including above-mentioned
Piston structure, further include cabinet and two cylinders, two pistons are slideably positioned in respectively in two cylinders, the cabinet
Interior rotation is provided with crankshaft, and the crankshaft includes the crank-pin with connecting hole rotation connection.
Through the above technical solutions, this air compressor machine is linear reciprocal air compressor machine, when the crank shaft rotates, crankshaft passes through rocking bar
Connecting rod is driven to move reciprocatingly along the axial direction of cylinder.Crankshaft two cylinders that rotate a circle can complete gas compression operation, have
Higher efficiency of calming the anger, and when one piston is in compression travel, another piston is in suction stroke.Since this air compressor machine uses
The seal ring structure of bi-directional symmetrical, then cylinder interior gas does not leak between The book of Changes piston and cylinder, guarantee air compressor machine have compared with
High working efficiency.
Preferably, the crankshaft further includes the drive shaft for being fixed on crank-pin one end, the master for being fixed on the crank-pin other end
Axle journal, the trunnion are overlapped with the axis of drive shaft, and the axis runout of the crank-pin is in the axis of drive shaft；The driving
Rotation connection is established by setting bearing one between axis and cabinet, rotation is established by setting bearing two between the trunnion and cabinet
Connection, two connecting rods are respectively positioned between bearing one and bearing two.
Through the above technical solutions, be rotatablely connected since drive shaft, trunnion pass through bearing and cabinet and establish, then crankshaft
Stability when unitary rotation is high；The indirect support of bearing one, bearing two has been obtained positioned at the crank-pin of drive shaft, main shaft collar
Effect, crank-pin are not easy torsional deformation when rotating.Bearing is as standard component, compared with hole axle directly rotates the mode of contact, axis
Hold can reduce with lower rotary resistance and longer service life rotary resistance between crankshaft and cabinet, crank-pin with
Rotary resistance between rocking bar；And crankshaft and cabinet are not easy to be worn, and bearing is replaced when bearing damage, can extend crankshaft and case
The service life of body.
Preferably, it is provided with bearing three, the rocking bar and crank-pin in the connecting hole, rotation company is established by bearing three
It connects, the size of the mesoporous can be passed through for bearing one, bearing two, bearing three and crankshaft.
Through the above technical solutions, rocking bar and crank-pin establish rotation connection by bearing three, between rocking bar and crank-pin
Rotary resistance is smaller, replacement bearing three when bearing three damages, and the link position of rocking bar and crank-pin is not easy to be worn.Due to
The size of mesoporous can be passed through for bearing one, bearing two, bearing three and crankshaft, then crankshaft and each bearing can pass through mesoporous and cabinet,
Rocking bar is dismounted, and the dismounting of crankshaft is more convenient.
Preferably, the drive shaft and crank-pin establish connection, the connector by connector set between the two
Including clump weight and the co-axially fixed pin rod of crank-pin；The pin rod and crank-pin are realized by bolt to be dismounted；The connector
On offer drive hole for drive shaft insertion, the drive shaft has keyway, is threaded with transmission spiral shell on the connector
Bolt, the drive bolt are inserted into keyway；The deviation of gravity center of the clump weight is used for balance crankshaft in drive shaft, the clump weight
The eccentric weight of upper crank-pin.
Through the above technical solutions, personnel are convenient to dismounting bearing three after pin rod is separated with crank-pin；Due to driving
Axis, connector, crank-pin three are removable, then can further facilitate the installation of crankshaft, each bearing；Each component of crankshaft can pre- life
It is assembled again after the completion of producing, crankshaft facilitates the production of crankshaft without being integrally formed.Clump weight is for crank on balance crankshaft
The eccentric weight of pin, the stability under loading of each bearing, is able to extend the service life of bearing, and reduce air compressor machine when making crank rotation
Vibration when work.
In conclusion the present invention having the beneficial effect that in contrast to the prior art
1, by the way that the sealing ring of bi-directional symmetrical is arranged, the sealing effect between piston and cylinder is preferable, and it is higher to guarantee that air compressor machine has
Working efficiency；
2, the sealing ring on piston, air-intake valve plate can be dismounted easily；
3, crankshaft can be dismounted easily with connecting rod piston component, cabinet, and stability when compressor operation is high.
Detailed description of the invention
Fig. 1 is a kind of existing perspective view of piston structure, the structure of main prominent piston ring and notch；
Fig. 2 is the perspective view of the piston structure of embodiment one；
Fig. 3 is the A-A cross-sectional view of Fig. 2；
Fig. 4 is the perspective view of the piston structure of embodiment two；
Fig. 5 is a kind of cross-sectional view of air compressor machine of embodiment three；
Fig. 6 is the Local map of Fig. 5, the structure of main prominent crankshaft and connector；
Fig. 7 is a kind of Local map of air compressor machine of embodiment three, the structure after the completion of main prominent connecting rod and crankshaft installed.
In figure, 10, piston ring；101, notch；1, piston；2, connecting rod；3, rocking bar；31, connecting hole；21, mesoporous；4, it seals
Ring；11, boss one；12, air-intake valve plate；13, pressure ring；14, fixing bolt；15, air inlet；16, boss two；121, mounting hole；
141, stage portion；22, pin hole；5, cabinet；51, cylinder；52, cylinder head；521, exhaust valve；6, crankshaft；61, drive shaft；62, bent
Handle pin；63, trunnion；71, bearing one；73, bearing two；72, bearing three；8, connector；81, clump weight；82, pin rod；821,
Setting circle shell of column；83, drive hole；611, keyway；84, drive bolt.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment one:
It is a kind of piston structure disclosed by the invention referring to Fig. 2, including two pistons being symmetrical set 1, by two pistons 1
The connecting rod 2 being connected and fixed, two pistons 1 are identical and axis is overlapped, and connecting rod 2 is hinged with close to the position of one piston 1 and shakes
Bar 3, rocking bar 3 are equipped with the connecting hole 31 for connecting with crank rotation.
The quantity of connecting rod 2 is two and is parallel to each other that the middle part of two connecting rods 2 is equipped with the mesoporous for avoiding crankshaft
21, two connecting rods 2 are identical.Rocking bar 3 is located between two connecting rods 2, and one end of rocking bar 3 passes through articulated shaft and two connecting rods 2
Common to establish rotation connection, connecting hole 31 is located at the other end that rocking bar 3 deviates from hinged place.
Referring to Fig. 2 and Fig. 3,1 wall coaxial of piston is fixed with seal assembly, and seal assembly includes axially consecutive along piston 1
Two sealing rings 4 being arranged, two sealing rings 4 are identical and separable, and two sealing rings 4 mutually abut.Piston 1 is equipped with
For the boss 1 that sealing ring 4 is placed, boss 1 is annular groove, and boss 1 axially penetrates through piston 1 along piston 1, through side
To away from connecting rod 2.Piston 1 is provided with air-intake valve plate 12 on the end face of connecting rod 2, pressure ring 13, is threaded with fixing bolt
14, the end face of piston 1 is used for towards 51 inner cavity of cylinder.
Piston 1 is equipped with the boss 2 16 for 13 placement positioning of pressure ring, and boss 2 16 is also annular groove.The shape of pressure ring 13 with
Boss 1, boss 2 16 are corresponding, and pressure ring 13 is fixed by bolts on piston 1, and sealing ring 4 is pressed in boss one by pressure ring 13
In 11, the fixation of sealing ring 4 is completed；After pressure ring 13 is removed, sealing ring 4 can be dismounted easily.Sealing ring 4 has bullet
Property, the outer edge of two sealing rings 4 is to the direction bending mutually deviated from, and two sealing rings 4 are along the direction mutually deviated from flaring
Shape.The outer edge of sealing ring 4, when the direction of the air into compression cylinder 51 of piston 1 is mobile, is leaned on for abutting 51 inner wall of cylinder
The sealing ring 4 of cavity direction plays main sealing function in nearly cylinder 51, in the work of the pressure in cylinder 51 of sealing ring 4 of flared
Under, the deformation tendency extended out can be generated, so that the edge of sealing ring 4 is further pushed against 51 inner wall of cylinder, plays preferable sealing
Effect.When piston 1 is mobile to opposite direction, another sealing ring 4 plays main sealing function.
Identical two sealing rings 4 have good interchangeability, when 4 serious wear of one sealing ring needs to renew,
The single sealing ring 4 is replaced, save the cost is conducive to；And the single more integrally formed bidirectional leather-cup of sealing ring 4 is compared to more
Manufacture easy to produce, cost is relatively low.Compared with the piston ring 10 of conventional belt notch 101, sealing ring 4 does not set opening, then in cylinder 51
Gas the case where being not present from opening leaks, the leakproofness with higher of sealing ring 4 guarantees air compressor machine work with higher
Efficiency.
Several air inlets 15 are offered on piston 1, all air inlets 15 are circumferentially symmetrical about the axis of piston 1,
Air inlet 15 runs through the axial ends of piston 1.Air-intake valve plate 12 covers the aperture of all air inlets 15, in air-intake valve plate 12
The heart offers the mounting hole 121 passed through for fixing bolt 14.Fixing bolt 14 includes positioned at the stage portion twisted between head and thread segment
141, stage portion 141 abuts piston 1 by end face, and stage portion 141 is arranged in mounting hole 121, the stubborn head nothing of fixing bolt 14
Method passes through mounting hole 121, then air-intake valve plate 12 is limited on piston 1 by fixing bolt 14, axial direction of the air-intake valve plate 12 along piston 1
With for mobile gap.
After tightening fixing bolt 14 on piston 1, the removable gap of air-intake valve plate 12 is also it has been determined that personnel need not adjustment
The scope of activities of air-intake valve plate 12, convenient for the assembling of air-intake valve plate 12 and piston 1.This piston structure uses the side of 1 air inlet of piston
Formula carries out air inlet, and compared with the mode of 52 air inlet of conventional cylinder head, the runner of gas is more reasonable, can also reduce cylinder head 52
Structure complexity, convenient for the manufacturing of cylinder head 52.After piston 1 takes out out of cylinder 51, personnel can be easily to air inlet
Valve block 12 carries out maintenance replacement.
Embodiment two:
Referring to Fig. 4, a kind of piston structure, including piston 1 and connecting rod 2, embodiment two and the distinctive points of embodiment one are: connecting rod
2 are rotatablely connected by end and piston 1, and connecting rod 2 is equipped with the pin hole 22 penetrated for the crank-pin of crankshaft away from the end of piston 1,
Connecting rod 2 is established by pin hole 22 and crank-pin and is rotatablely connected.Piston 1 has piston skirt, and connecting rod 2 is lived towards the end of piston 1
It fills in skirt to cover, which is suitable for common air compressor machine.
Embodiment three:
Referring to Fig. 5 and Fig. 7, a kind of air compressor machine further includes cabinet 5 and two cylinders 51, two work including above-mentioned piston structure
Plug 1 is slideably positioned in respectively in two cylinders 51.It is additionally provided on cabinet 5 by the end-closed cylinder head 52 of cylinder 51, cylinder head
52 are equipped with the exhaust valve 521 of one-way exhaust；Rotation is provided with crankshaft 6 in cabinet 5, and crankshaft 6 includes rotating to connect with connecting hole 31
The crank-pin 62 connect.
Referring to figure 5 and figure 6, crankshaft 6 further includes the drive shaft 61 for being fixed on 62 one end of crank-pin, is fixed on crank-pin 62 separately
The trunnion 63 of one end；Trunnion 63 is overlapped with the axis of drive shaft 61, and the axis runout of crank-pin 62 is in the axis of drive shaft 61
Line.Drive shaft 61 is rotated by external motor driven, and when drive shaft 61 rotates, crank-pin 62 does circle around the axis of drive shaft 61
Zhou Yundong, crank-pin 62 drive connecting rod 2 to move reciprocatingly along the axial direction of cylinder 51 by rocking bar 3.This air compressor machine is linear past
Multiple air compressor machine, cabinet 5 are equipped with air inlet, and two cylinders 51 that rotate a circle of crankshaft 6 can complete gas compression operation, and one
When piston 1 is in compression travel, another piston 1 is in suction stroke.
Rotation connection is established by setting bearing 1 between drive shaft 61 and cabinet 5, by setting between trunnion 63 and cabinet 5
It sets bearing 2 73 and establishes rotation connection, two connecting rods 2 are respectively positioned between bearing 1 and bearing 2 73.It is provided in connecting hole 31
Bearing 3 72, rocking bar 3 and crank-pin 62 establish rotation connection by bearing 3 72；The shape at 2 middle part of connecting rod is circular ring shape, mesoporous
21 are equipped with biggish internal diameter, and the size of mesoporous 21 can be passed through for bearing 1, bearing 2 73, bearing 3 72 and crankshaft 6.
It is established and is rotatablely connected by bearing and cabinet 5 due to drive shaft 61, trunnion 63, then when 6 unitary rotation of crankshaft
Stability it is high；Crank-pin 62 between drive shaft 61, trunnion 63 has obtained the indirect support of bearing 1, bearing 2 73
Effect, crank-pin 62 are not easy torsional deformation when rotating.Bearing is as standard component, compared with hole axle directly rotates the mode of contact,
Bearing has lower rotary resistance and longer service life, can reduce rotary resistance between crankshaft 6 and cabinet 5, crank
Rotary resistance between pin 62 and rocking bar 3；And crankshaft 6 and cabinet 5 are not easy to be worn, and bearing is replaced when bearing damage, can be prolonged
The service life of long crankshaft 6 and cabinet 5.Referring to Fig. 7, crankshaft 6 and each bearing can pass through mesoporous 21 and be torn open with cabinet 5, rocking bar 3
Dress, the dismounting of crankshaft 6 are more convenient.
Referring to figure 5 and figure 6, drive shaft 61 and crank-pin 62 are fixed by connector 8 set between the two, are driven
Axis 61, connector 8,62 three of crank-pin are removable.Connector 8 includes clump weight 81 and the co-axially fixed pin rod of crank-pin 62
82.Pin rod 82 is positioned with crank-pin 62 by end grafting, and wherein pin rod 82 includes determining for 3 72 inner ring surface of contact bearing
Circle of position shell of column 821, the outer diameter of setting circle shell of column 821 are less than pin rod 82,62 diameter of crank-pin of its axial sides, pin rod 82, song
The stepped edges of handle pin 62 towards setting circle shell of column 821 can play the role of end face limit to bearing 3 72, and bearing 3 72 is not
The installation stable degree of bearing 3 72 can be improved along the axial movement of crank-pin 62.
Crank-pin 62 is fixed in such a way that end is screwed into bolt with pin rod 82, when pin rod 82 is separated with crank-pin 62
Afterwards, personnel are convenient to dismounting bearing 3 72.The drive hole 83 being inserted into for drive shaft 61, drive shaft 61 are offered on connector 8
Side wall be equipped with keyway 611, be threaded with drive bolt 84 on clump weight 81, the length direction of drive bolt 84 is along drive hole
83 radial direction, drive bolt 84 are inserted into keyway 611 and are produced relative rotation with limiting connector 8 with drive shaft 61, are passed with reaching
Pass the purpose of torque.
For the deviation of gravity center of clump weight 81 in drive shaft 61, offset direction is radial away from crank-pin 62 along drive shaft 61
Side, eccentric weight of the clump weight 81 for crank-pin 62 on balance crankshaft 6, makes the stability under loading of each bearing when rotating of crankshaft 6,
It is able to extend the service life of bearing, and reduces vibration when air compressor machine work.Due to drive shaft 61, connector 8, crank-pin 62
Three is removable, then can further facilitate the installation of crankshaft 6, each bearing；Each component of crankshaft 6 can carry out again after the completion of pre-manufactured
Assembling, crankshaft 6 facilitate the production of crankshaft 6 without being integrally formed.
To sum up, this air compressor machine has the discharge chambe in cylinder 51 preferable close by the sealing ring 4 of setting bi-directional symmetrical
Sealing property guarantees air compressor machine working efficiency with higher, and stability when work is good.On this basis, this air compressor machine
Crankshaft 6 can be assembled easily with connecting rod 2, rocking bar 3, the manufacture easy to produce of this air compressor machine.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (10)
1. a kind of piston structure, including piston (1), piston (1) wall coaxial is fixed with seal assembly, it is characterized in that: institute
Stating seal assembly includes two sealing rings (4) being axially arranged along piston (1), and the sealing ring (4) has elasticity, described in two
The outer edge of sealing ring (4) is bent to the direction mutually deviated from, and two sealing rings (4) are along the direction mutually deviated from flaring
Shape, the outer edge of the sealing ring (4) is for abutting cylinder (51) inner wall.
2. piston structure according to claim 1, it is characterized in that: two sealing rings (4) are identical and separable.
3. piston structure according to claim 1, it is characterized in that: the piston (1) is equipped with and to place for sealing ring (4)
Boss one (11), the boss one (11) axially penetrate through piston (1) along piston (1), have been bolted on the piston (1)
Sealing ring (4) is pressed in boss one (11) by pressure ring (13), the pressure ring (13).
4. piston structure according to claim 1, it is characterized in that: several air inlets (15) are offered on the piston (1),
The air inlet (15) runs through the axial ends of piston (1), the piston (1) towards be provided on the end face in cylinder (51) into
Air valve plate (12) is threaded with fixing bolt (14), and the air-intake valve plate (12) covers the aperture of air inlet (15), described
Offer the mounting hole (121) passed through for fixing bolt (14) on air-intake valve plate (12), the fixing bolt (14) is by intake valve
Piece (12) is limited on piston (1), and the air-intake valve plate (12) has along the axial direction of piston (1) for mobile gap.
5. piston structure according to claim 4, it is characterized in that: the fixing bolt (14) includes being located to twist head and screw thread
Stage portion (141) between section, the stage portion (141) abut piston (1) by end face, and the stage portion (141) is arranged in peace
It fills in hole (121), the stubborn head of the fixing bolt (14) can not pass through mounting hole (121).
6. piston structure according to claim 1, it is characterized in that: there are two the piston (1) coaxial arrangements, further include by
The connecting rod (2) that two pistons (1) are fixedly connected；The connecting rod (2) is arranged in parallel with two, rotates setting on the connecting rod (2)
Have rocking bar (3), the rocking bar (3) is located between two connecting rods (2), and the rocking bar (3) is equipped with to be connected for rotating with crankshaft (6)
The connecting hole (31) connect is equipped with the mesoporous (21) for avoiding crankshaft (6) on two connecting rods (2).
It further include cabinet (5) and two cylinders (51) it is characterized in that: include above-mentioned piston structure 7. a kind of air compressor machine, two
The piston (1) is slideably positioned in respectively in two cylinders (51), and rotation is provided with crankshaft (6), the song in the cabinet (5)
Axis (6) includes the crank-pin (62) with connecting hole (31) rotation connection.
8. a kind of air compressor machine according to claim 7, it is characterized in that: the crankshaft (6) further includes being fixed on crank-pin
(62) drive shaft (61) of one end, be fixed on the trunnion (63) of crank-pin (62) other end, the trunnion (63) and driving
The axis of axis (61) is overlapped, and the axis runout of the crank-pin (62) is in the axis of drive shaft (61)；The drive shaft (61) and
Rotation connection is established by setting bearing one (71) between cabinet (5), passes through setting bearing between the trunnion (63) and cabinet (5)
Rotation connection is established in two (73), and two connecting rods (2) are respectively positioned between bearing one (71) and bearing two (73).
9. a kind of air compressor machine according to claim 8, it is characterized in that: being provided with bearing three in the connecting hole (31)
(72), the rocking bar (3) and crank-pin (62) are established by bearing three (72) is rotatablely connected, and the size of the mesoporous (21) can supply
Bearing one (71), bearing two (73), bearing three (72) and crankshaft (6) pass through.
10. a kind of air compressor machine according to claim 8, it is characterized in that: the drive shaft (61) and crank-pin (62) pass through
Connector (8) set between the two establishes connection, and the connector (8) includes clump weight (81), coaxial with crank-pin (62)
Fixed pin rod (82)；The pin rod (82) and crank-pin (62) are realized by bolt to be dismounted；It is offered on the connector (8)
For the drive hole (83) of drive shaft (61) insertion, the drive shaft (61) has keyway (611), screw thread on the connector (8)
It is connected with drive bolt (84), in drive bolt (84) insertion keyway (611)；The deviation of gravity center of the clump weight (81) in
Drive shaft (61), eccentric weight of the clump weight (81) for crank-pin (62) on balance crankshaft (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910138211.4A CN109751223A (en) | 2019-02-25 | 2019-02-25 | A kind of air compressor machine and its piston structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910138211.4A CN109751223A (en) | 2019-02-25 | 2019-02-25 | A kind of air compressor machine and its piston structure |
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| Publication Number | Publication Date |
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| CN109751223A true CN109751223A (en) | 2019-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910138211.4A Pending CN109751223A (en) | 2019-02-25 | 2019-02-25 | A kind of air compressor machine and its piston structure |
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| CN (1) | CN109751223A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379686A (en) * | 2020-04-13 | 2020-07-07 | 申元机电股份有限公司 | Positive and negative pressure dual-purpose oil-free compressor |
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| CN111379686A (en) * | 2020-04-13 | 2020-07-07 | 申元机电股份有限公司 | Positive and negative pressure dual-purpose oil-free compressor |
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