CN207178141U - The pump head of belt oilless air compressor - Google Patents
The pump head of belt oilless air compressor Download PDFInfo
- Publication number
- CN207178141U CN207178141U CN201721216388.4U CN201721216388U CN207178141U CN 207178141 U CN207178141 U CN 207178141U CN 201721216388 U CN201721216388 U CN 201721216388U CN 207178141 U CN207178141 U CN 207178141U
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- CN
- China
- Prior art keywords
- crankcase
- belt
- pump head
- air compressor
- oilless air
- Prior art date
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Abstract
The utility model provides a kind of pump head of belt oilless air compressor, belongs to field of mechanical technique.It solve existing belt oilless air compressor pump head service life it is short the problems such as.The pump head of this belt oilless air compressor includes bent axle, crankcase and several cylinders, cylinder is fixed on crankcase and is connected with crankcase, bent axle is connected with and the one-to-one connecting rod of cylinder, connecting rod is connected with the piston having in corresponding cylinder, piston is provided with guide ring, there is the groove that several intervals are uniformly arranged, the both sides of the edge of guide ring are equipped with equally distributed gas port in the middle part of the outer peripheral face of guide ring.The utility model has the advantages that damping noise reduction effect is good, service life is long.
Description
Technical field
The utility model belongs to field of mechanical technique, is related to a kind of pump head, more particularly to a kind of belt oilless air compressor
Pump head.
Background technology
Applicant devises a kind of oilless air compressor and has applied for patent [application number：201320800864.2；Award
Weigh notification number：CN203584712U], it includes air accumulator, motor and pump head, and motor and pump head are both secured to the upper end of air accumulator
Face, pump head include crankcase and the bent axle in crankcase, and crankcase is fixed on the upper surface of air accumulator, the rear end pivot of bent axle
It is connected in the side wall of crankcase, the front end of bent axle through crankcase and is connected with the first belt pulley, and the output shaft fixed connection of motor has
Second belt pulley, the second belt pulley are connected by a belt with the first belt pulley, and pump head also includes two low-pressure cylinders and one
Individual high-pressure cylinder, two low-pressure cylinders and a high-pressure cylinder are both secured at the upper end of crankcase and are connected with the crankcase
It is logical, an air intake duct is provided with two of which low-pressure cylinder, two low-pressure cylinders pass through a downtake pipe and high pressure respectively
Cylinders lead to, and the tube wall of downtake pipe offers the spiral type hole of at least one Cooling Water circulation along its length direction
Road, high-pressure cylinder are connected by a second exhaust pipe with air accumulator, and a low-pressure piston, low pressure are plugged with each low-pressure cylinder
Piston is connected by a low pressure connecting rod with bent axle, and a high pressure piston is plugged with high-pressure cylinder, and high pressure piston passes through a high pressure
Connecting rod is connected with bent axle.First annular groove is offered in the side wall of low-pressure piston and the side wall of high pressure piston, it is first annular
Guide ring is embedded with groove, the bottom of crankcase is plate body made of a stainless steel, and several through holes are offered on plate body, some
The shape of individual through hole is identical and equal in magnitude.
Piston is connected by piston pin with bent axle in above-mentioned oilless air compressor, and piston pin diameter is small, living
Connectivity and lubricity between stopper rod and bent axle is undesirable, influences service life, and during guide ring long-play, holds
Easily expand stuck, coefficient of friction is big so that noise is big, also make it that the load of pump is big, is unable to reach the high design for balancing low vibrations
It is required that the multiple apertures of crankcase bottom are unable to reach the suction and discharge of airflow smooth in addition, crankcase uses negative for a long time
Lotus and temperature are high, and not enough energy-conservation is stable.
The content of the invention
The purpose of this utility model is to be directed to the above-mentioned problems in the prior art, there is provided a kind of damping noise reduction effect
Good, service life length belt oilless air compressor pump head.
The purpose of this utility model can be realized by following technical proposal：A kind of pump head of belt oilless air compressor, bag
Bent axle, crankcase and several cylinders are included, described cylinder is fixed on crankcase and is connected with crankcase, described bent axle
It is connected with and is connected with the one-to-one connecting rod of cylinder, described connecting rod with the piston having in corresponding cylinder, described piston
It is provided with guide ring, it is characterised in that the groove that there are several intervals to be uniformly arranged in the middle part of the outer peripheral face of described guide ring,
The both sides of the edge of described guide ring are equipped with equally distributed gas port.
The pump head of this belt oilless air compressor is reduced the friction area of guide ring, reduced swollen by the setting of groove
Swollen coefficient, the operating noise of guide ring is small, and guide ring will not expand and stuck in cylinder after working long hours, and use the longevity
Life is grown, and the setting of gas port in addition causes inner pressure of air cylinder to be efficiently directed into and export along gas port, alleviates piston load,
Reach the high design effect for balancing low vibrations.
In the pump head of above-mentioned belt oilless air compressor, described gas port is semi-circular hole.So hole of gas port
Wall is smooth, at no cracky, service life length, and air guide is smooth.
In the pump head of above-mentioned belt oilless air compressor, described connecting rod and the piston having in corresponding cylinder pass through by
The piston pin that both wear together is connected, and is arranged with needle bearing, described piston pin to described connecting rod interference fit
Set through needle bearing, described gudgeon pin shaft is communicated in offering oiling blind hole and piston pin and radially offer several
The oil outlet of needle bearing inner ring, described piston pin are connected with the plug for being plugged in oiling blind hole and described plug and oiling
Sealing ring is provided between the aperture of blind hole.Using lubricating oil is filled in preceding oiling blind hole, lubricating oil is from fuel-displaced in use
Hole is flowed out, to being lubricated between piston pin and needle bearing so that piston pin and the lubricity of bent axle junction are good, and reduction rubs
Wipe, operating noise is small.
In the pump head of above-mentioned belt oilless air compressor, the diameter of described piston pin is more than or equal to 25mm.So
The contact area of piston pin and needle bearing is ensure that, both uniform forces, and it is easy to the processing of oiling blind hole to increase oiling
Amount, extends service life.
In the pump head of above-mentioned belt oilless air compressor, the bottom of described crankcase offers an in the shape of a frame or circle
Poroid or hexagon shape opening, the area of described opening are more than or equal to the half of crankcase bottom area.
So the circulation of crankcase and thermal diffusivity are good so that good operating stability.
Compared with prior art, lubricity is good at piston pin in the pump head of this belt oilless air compressor, and rub small, piston pin
Big, the uniform force with the contact area of needle bearing, and the setting of guide ring reduces coefficient of friction and the coefficient of expansion, piston
Locate working stability and noise is small, and load can be reduced, it is also relatively reduced to the demand of power caused by motor, effectively improve
The motor service life and efficiency being connected with bent axle, the circulation of crankcase and thermal diffusivity are good in addition, service life length.
Brief description of the drawings
Fig. 1 is the structure decomposition figure of the pump head of this belt oilless air compressor.
Fig. 2 be this belt oilless air compressor pump head in structure sectional view at piston pin.
Fig. 3 be this belt oilless air compressor pump head in guide ring structure chart.
In figure, 1, bent axle；2nd, crankcase；2a, opening；3rd, cylinder；4th, connecting rod；5th, piston；6th, guide ring；6a, groove；
6b, gas port；7th, piston pin；7a, oiling blind hole；7b, oil outlet；8th, needle bearing；9th, plug；10th, sealing ring.
Embodiment
It is specific embodiment of the utility model and with reference to accompanying drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
As shown in figures 1 and 3, the pump head of this belt oilless air compressor includes bent axle 1, crankcase 2 and three cylinders 3, gas
Cylinder 3 is fixed on crankcase 2 and is connected with crankcase 2, and bent axle 1 is connected with connecting rod 4 one-to-one with cylinder 3, connecting rod 4 with
The piston 5 having in corresponding cylinder 3 is connected, and piston 5 is provided with guide ring 6, has several in the middle part of the outer peripheral face of guide ring 6
The groove 6a being uniformly arranged is spaced, the both sides of the edge of guide ring 6 are equipped with equally distributed gas port 6b, the present embodiment further groove
6a quantity is three, and gas port 6b is semi-circular hole.
Guide ring 6 reduces the friction area of guide ring 6 by groove 6a setting so that noise is relatively reduced, to making
Comfort level is brought with environment, and reduces the coefficient of expansion, guide ring 6, which works long hours, to be expanded and stuck, gas port 6b
Setting make it that pressure is efficiently directed into and exported along gas port 6b in cylinder 3, guide ring 6 slide it is smooth also cause its to electricity
The demand of power caused by machine is also relatively reduced, effectively improves the motor service life and efficiency being connected with bent axle 1.
Further describe in detail, as depicted in figs. 1 and 2, connecting rod 4 is with the piston 5 having in corresponding cylinder 3 by the way that both are worn
Piston pin 7 together is connected, and is arranged with needle bearing 8 to the interference fit of connecting rod 4, piston pin 7 is set through needle bearing 8
Put, piston pin 7 axially offers oiling blind hole 7a, and the radial direction of piston pin 7 offers two and is symmetrical arranged and is communicated in needle bearing 8
The oil outlet 7b of inner ring, piston pin 7 are connected with the plug 9 for being plugged in oiling blind hole 7a, plug 9 and oiling blind hole 7a aperture it
Between be provided with sealing ring 10, the diameter of piston pin 7 is more than or equal to 25mm, and the bottom of crankcase 2 offers an in the shape of a frame or circle
Poroid or hexagon shape opening 2a, opening 2a area are more than or equal to the half of the bottom area of crankcase 2.
The diameter of piston pin 7 is equal to 25mm in the present embodiment, and the length of piston pin 7 is 79mm, oiling blind hole 7a diameter
For 15mm, oiling blind hole 7a depth is 76mm, and such injection flow is more, and the contact area of piston pin 7 and needle bearing 8 is big, by
Power is uniform.Using filling lubricating oil in preceding oiling blind hole 7a, then blocked with plug 9, sealing ring 10 ensure that lubricating oil will not be from
Leaked at plug 9, lubricating oil flows out from oil outlet 7b in use, to moistening between piston pin 7 and needle bearing 8
It is sliding so that piston pin 7 and the lubricity of the junction of bent axle 1 are good, reduce friction, and operating noise is small.
Opening 2a is in the shape of a frame in the present embodiment and area is 4/5ths of the bottom area of crankcase 2.By the bottom of crankcase 2
Six apertures that portion originally offered are changed to the big opening 2a of circulation area, with being so easy to airflow smooth from opening 2a
Inspiration, discharge, the internal pressure of crankcase 2 is reduced, while opening 2a can be carried out fast and effectively to the temperature in crankcase 2
Release, so that crankcase 2 in long-term use, reduces load and temperature, energy-conservation is stable, and can reduce in piston pin 7 and moisten
The quick release of lubricating oil, extends service life.
Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute
Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Claims (5)
1. a kind of pump head of belt oilless air compressor, including bent axle（1）, crankcase（2）With several cylinders（3）, described gas
Cylinder（3）It is fixed on crankcase（2）Upper and and crankcase（2）It is connected, described bent axle（1）It is connected with and cylinder（3）One a pair
The connecting rod answered（4）, described connecting rod（4）With corresponding cylinder（3）The piston inside having（5）It is connected, described piston（5）On set
There is guide ring（6）, it is characterised in that described guide ring（6）Outer peripheral face in the middle part of have several intervals be uniformly arranged it is recessed
Groove（6a）, described guide ring（6）Both sides of the edge be equipped with equally distributed gas port（6b）.
2. the pump head of belt oilless air compressor according to claim 1, it is characterised in that described gas port（6b）For half
Circular port.
3. the pump head of belt oilless air compressor according to claim 1 or 2, it is characterised in that described connecting rod（4）With it is right
Answer cylinder（3）The piston inside having（5）By the way that both are worn into piston pin together（7）It is connected, described connecting rod（4）Cross
It is full of and is ordinatedly arranged with needle bearing（8）, described piston pin（7）Through needle bearing（8）Set, described piston pin（7）
Axially offer oiling blind hole（7a）And piston pin（7）Radially offering several is communicated in needle bearing（8）Inner ring it is fuel-displaced
Hole（7b）, described piston pin（7）It is connected with and is plugged in oiling blind hole（7a）Plug（9）And described plug（9）And oiling
Blind hole（7a）Aperture between be provided with sealing ring（10）.
4. the pump head of belt oilless air compressor according to claim 3, it is characterised in that described piston pin（7）It is straight
Footpath is more than or equal to 25mm.
5. the pump head of belt oilless air compressor according to claim 4, it is characterised in that described crankcase（2）Bottom
Portion offers the opening of an in the shape of a frame or circular hole or hexagon shape（2a）, described opening（2a）Area be more than or
Equal to crankcase（2）The half of bottom area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721216388.4U CN207178141U (en) | 2017-09-21 | 2017-09-21 | The pump head of belt oilless air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721216388.4U CN207178141U (en) | 2017-09-21 | 2017-09-21 | The pump head of belt oilless air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207178141U true CN207178141U (en) | 2018-04-03 |
Family
ID=61748764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721216388.4U Expired - Fee Related CN207178141U (en) | 2017-09-21 | 2017-09-21 | The pump head of belt oilless air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207178141U (en) |
-
2017
- 2017-09-21 CN CN201721216388.4U patent/CN207178141U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180403 Termination date: 20200921 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |