CN110056506B - Dry-type oilless screw molded line and air compressor adopting same - Google Patents
Dry-type oilless screw molded line and air compressor adopting same Download PDFInfo
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- CN110056506B CN110056506B CN201910374487.2A CN201910374487A CN110056506B CN 110056506 B CN110056506 B CN 110056506B CN 201910374487 A CN201910374487 A CN 201910374487A CN 110056506 B CN110056506 B CN 110056506B
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- 239000002131 composite material Substances 0.000 claims description 3
- 238000007906 compression Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 230000006835 compression Effects 0.000 abstract description 5
- 238000001125 extrusion Methods 0.000 abstract description 3
- 239000010687 lubricating oil Substances 0.000 abstract description 3
- 230000009347 mechanical transmission Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000005461 lubrication Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000009423 ventilation 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
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/082—Details specially related to intermeshing engagement type pumps
- F04C18/084—Toothed wheels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/20—Rotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2250/00—Geometry
- F04C2250/20—Geometry of the rotor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention provides a dry type oilless screw molded line and an air compressor adopting the same, wherein a male screw and a female screw of the air compressor adopt special molded lines, so that the area of a leakage triangular area of a meshing interface is reduced to the minimum, a smaller leakage area and a smaller leakage gap are provided, under the same shaft power working condition, the exhaust capacity of the dry type oilless screw molded line exceeds that of the existing inlet type equipment by more than 5%, the energy consumption loss is greatly reduced, meanwhile, the female screw and the male screw adopt dry type oilless screw structures, lubrication by lubricating oil is not needed, compressed air is cleaner, the compression efficiency is higher, the dry type oilless screw molded line is widely applicable to various high-end industrial product production lines needing clean compressed air, the screw structures adopt the scheme of 4:6 gear ratio with moderate comprehensive mechanical properties, and the deformation generated by the expansion extrusion force of high-pressure air in each cavity to the tooth-shaped structure in the mechanical transmission process of the screw is stable, and the maximum gas cavity can be ensured to be kept in each rotation period.
Description
Technical Field
The invention relates to the field of manufacturing of air compressor main units, in particular to a dry oil-free screw molded line and an air compressor adopting the screw.
Background
The air compressor is a device for compressing gas, and is widely applied to pneumatic tools taking air as power, tool replacement of a machining center, vehicle braking, door and window opening and closing, starting of large marine diesel engines, wind tunnel experiments, ventilation of underground channels, metal smelting and the like.
At present, most of the aerodynamic devices used in various production enterprises on the market mainly use oil injection type double-screw compressors, the power compressed air produced by the oil injection type double-screw compressors always contains industrial lubricating oil components, the application of the oil injection type double-screw compressors in the field of high-tech product production is strictly limited, clean and pollution-free power compressed air is required in the field of industrial production such as high-end high-tech content, biochemical medicine, food sanitation and the like, the dry type oil-free screw compressors are required to provide clean compressed air, and the dry type oil-free screw compressors become irreplaceable important energy devices in the field at present because the dry type oil-free screw compressors have clean and efficient compression efficiency.
However, the dry type oil-free screw air compressor in China is completely imported from abroad, the cost is high, meanwhile, the area of the triangular leakage area of the screw line of the dry type oil-free screw air compressor in the prior art is large, when the compression rotor is operated to compress, high-pressure air in the air chamber can reversely leak through the leakage area, so that the air flow which is required to be pushed out is lost in the compression process, namely, compressed air is partially leaked, and the air cannot be completely pushed out to cause the phenomenon of energy loss.
Therefore, a dry oil-free screw type line and an air compressor adopting the same are needed, and the problems of large area and large energy consumption loss of the triangular leakage area of the screw type line of the conventional dry oil-free screw air compressor can be solved.
Disclosure of Invention
The invention aims to provide a dry oil-free screw type line and an air compressor adopting the same, so as to solve the problems of larger area and larger energy consumption loss of the triangular leakage area of the screw type line of the conventional dry oil-free screw air compressor.
In order to achieve the above object, the present invention provides the following solutions:
the invention provides a dry oil-free screw molded line, which comprises a male screw and a female screw, wherein the male screw and the female screw are parallel and meshed with each other, and the tooth ratio of the male screw to the female screw is 4:6;
wherein each tooth profile of the end face of the male screw is the same, all teeth are distributed in an array along the circumferential direction of the male screw, and the end face molded line of the male screw is formed by an arc line a 1 b 1 Elliptic line b 1 c 1 Curve c 1 d 1 Elliptic line d 1 e 1 And parabola e 1 f 1 Sequentially connected to form the composite material;
each tooth profile of the end face of the female screw is the same, all teeth are distributed in an array manner along the circumferential direction of the female screw, and the end face molded line of the female screw is formed by an arc line a 2 b 2 Arc line b 2 c 2 Arc line c 2 d 2 And curve d 2 e 2 Sequentially connected to form the novel energy-saving device.
Preferably, the number of teeth of the male screw is 4, and the number of teeth of the female screw is 6.
Preferably, the arc linea 1 b 1 The origin a of (a) 1 On the tooth top circle of the male screw, the parabola e 1 f 1 The starting point e of (2) 1 On the root circle of the male screw, the parabola e 1 f 1 End point f of (2) 1 Is positioned on the tooth top circle of the male screw rod; the arc line a 2 b 2 The origin a of (a) 2 Located on the tooth top circle of the female screw, the curve d 2 e 2 The starting point d of (2) 2 Located on the root circle of the female screw, the curve d 2 e 2 Endpoint e of (2) 2 Is positioned on the tooth top circle of the female screw.
Preferably, the molded line equation of the male screw is:
the arc line a 1 b 1 Is defined by the functional equation:
x 1 ＝r 11 *cos(t 1 )
y1＝r 11 *sin(t 1 )+39.5
0.5600034667＜t 1 ＜π/2
30＜r 11 ＜40
the elliptic line b 1 c 1 (12) Is defined by the functional equation:
x 2 ＝c*cos(t 2 *5/3)-d*sin(t 2 *5/3)+100*sin(t 2 )-0.21181331
y 2 ＝-d*cos(t 2 *5/3)-c*sin(t 2 *5/3)+100*cos(t 2 )-0.13279728
0＜t 2 ＜0.020154246828
c＝25.84122472
d＝44.29873138
the curve c 1 d 1 (13) Is defined by the functional equation:
x 3 ＝8.75*cos(t 31 )+x 31 -0.21181331
y 3 ＝8.75*sin(t 31 )+y 31 -0.13279728
t 31 ＝atan((y 31 -40*cos(t 3 ))/(x 31 -40*sin(t 3 )))+π
x 31 ＝a*cos(t 3 *5/3)-b*sin(t 3 *5/3)+100*sin(t 3 )
y 31 ＝-b*cos(t 3 *5/3)-a*sin(t 3 *5/3)+100*cos(t 3 )
0.02015425＜t 3 ＜1.04683546
a＝33.25469083
b＝39.65082645
the oval line d 1 e 1 (14) Is defined by the functional equation:
x 4 ＝r 12 *cos(t 41 )+100*sin(t 4 )-0.21181331
y 4 ＝r 12 *sin(t 41 )+100*cos(t 4 )-0.13279728
53.5＜r 12 ＜69.4
1.04683545＜t 4 ＜1.07507664
t 41 ＝atan(1/tan(t 4 ))+π
the parabola e 1 f 1 (15) Is defined by the functional equation:
x 5 ＝100*cos(k-t 5 *3/2)-60.75*cos(m+k-5*t 5 /2)
y 5 ＝sqrt(13690.5625-12150*cos(m-t 5 )-10000*cos(k-t 5 *3/2) 2 -3690.5625*cos(m+k-5*t 5 /2) 2 +12150*cos(k-t 5 *3/2)*cos(m+k-5*t 5 /2))
m＝43.4163477/180*π
k＝36.7705248/180*π
0＜t 5 ＜m；
the molded line equation of the female screw (2) is as follows:
the arc line a 2 b 2 (21) Is defined by the functional equation:
x 1 ＝r 21 *cost 1 e＜t 1 ＜f
y 1 ＝r 21 *sint 1 e＜t 1 ＜f
58＜r 21 ＜67
e＝0.6797
f＝π/3+atan(d/c)
c＝57.1290
d＝-19.9131
the arc line b 2 c 2 (22) Is defined by the functional equation:
x 2 ＝r 22 cost 2 +a g＜t 2 ＜e
y 2 ＝r 22 sint 2 +b g＜t 2 ＜e
7.0＜r 22 ＜10.5
e＝0.6797
g＝-1.0108
a＝39.6508
b＝33.2547
the arc line c 2 d 2 (23) Is defined by the functional equation:
x 3 ＝r 23 cost 3 +r 24 h＜t 3 ＜π
y 3 ＝r 23 sint 3 h＜t 3 ＜π
26.4＜r 23 ＜37.5
53.5＜r 24 ＜69.4
h＝2.1308
the curve d 2 e 2 Is defined by the functional equation:
x 4 ＝100*cos(t 4 *2/3)-70*cos(5*t 4 /3)
y 4 ＝sqrt(14900-14000*cos(t 4 )-4900*cos(5*t 4 /3) 2 +14000*cos(2*t 4 /3)*cos(5*t 4 /3)-10000*cos(2*t 4 /3) 2 )
0＜t 4 ＜0.63873885。
a dry oil-free screw air compressor includes the dry oil-free screw profile described above.
Compared with the prior art, the invention has the following beneficial technical effects:
1. the dry type oil-free screw type line and the air compressor adopting the same provided by the invention adopt a dry type oil-free screw structure, do not need lubricating oil lubrication, ensure that compressed air is cleaner, have higher compression efficiency, and are widely applicable to various high-end industrial product production lines requiring clean compressed air.
2. The invention provides a dry oil-free screw molded line and an air compressor adopting the screw, wherein the screw structure adopts the internationally popular 4:6 gear ratio scheme with moderate comprehensive mechanical properties, so that the deformation of the screw under the action of high-speed centrifugal force in mechanical transmission and expansion extrusion force of high-pressure air in each cavity to the tooth structure in the compression process is stable, and the maximum gas cavity can be ensured to be maintained as much as possible in each rotation period.
3. According to the dry type oilless screw molded line and the air compressor adopting the same, the male screw and the female screw adopt special molded lines, so that the area of a leakage triangular area of a meshing interface is reduced to the minimum, smaller leakage areas and leakage gaps are provided, and under the same shaft power working condition, the air compressor exceeds the larger exhaust capacity of more than 5% of the existing imported same type equipment, and the energy consumption loss is greatly reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a diagram showing the working state of a screw in a dry oil-free screw type wire and an air compressor using the same;
FIG. 2 is a diagram of the end face of a screw in an air compressor using a dry oil-free screw profile provided by the present invention;
FIG. 3 is a view showing the construction of a male screw profile in a dry oil-free screw profile and an air compressor using the same according to the present invention;
FIG. 4 is a diagram of the female screw profile in a dry oil-free screw profile and an air compressor using the same according to the present invention;
FIG. 5 is a schematic diagram of a dry oil-free screw air compressor performance test in a dry oil-free screw profile and an air compressor using the same according to the present invention;
in the figure: 1: male screw, 11: arc line a 1 b 1 And (2) 12: elliptic line b 1 c 1 And 13: curve c 1 d 1 And 14: elliptic line d 1 e 1 And 15: parabolic line e 1 f 1 And 2: female screw, 21: arc line a 2 b 2 And 22: arc line b 2 c 2 And 23: arc line c 2 d 2 And 24: curve d 2 e 2 。
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a dry type oil-free screw type line and an air compressor adopting the screw, and solves the problems that the area of a triangular leakage area of the screw type line of the conventional dry type oil-free screw air compressor is large and large energy consumption and loss exist by adopting a special screw type line.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Example 1:
the present embodiment provides a dry type oilless screw molded line, as shown in fig. 1 and 2, comprising a male screw 1 and a female screw 2, the male screw 1 and the female screw 2 being parallel and intermeshed, the ratio of the teeth of the male screw 1 and the female screw 2 being 4:6, and in particular, in the present embodiment, the male screw 1The number of teeth of the female screw 2 is 4, the number of teeth of the female screw 2 is 6, the number of teeth of the screw is set so that the deformation generated under the action of the high-speed centrifugal force of the screw in mechanical transmission and the expansion extrusion force of high-pressure air in each cavity to a tooth structure in the compression process is stable, the largest gas cavity can be ensured to be maintained as much as possible in each rotation period, the tooth shape of each tooth of the end face of the male screw 1 is the same, all 4 teeth are distributed in an array along the circumferential direction of the male screw 1, and the end face molded line of the male screw 1 is formed by an arc line a 1 b 1 11. Elliptic line b 1 c 1 12. Curve c 1 d 1 13. Elliptic line d 1 e 1 14 and parabola e 1 f 1 15 are connected in turn; each tooth profile of the end face of the female screw 2 is the same, all 6 teeth are distributed along the circumferential direction of the female screw 2 in an array manner, and the end face molded line of the female screw 2 is formed by an arc line a 2 b 2 21. Arc line b 2 c 2 22. Arc line c 2 d 2 23 and curve d 2 e 2 24 are connected in turn.
Further, the arc line a 1 b 1 11 start point a 1 On the tip circle of the radial end face of the male screw 1, parabola e 1 f 1 15 start point e 1 On the root circle of the radial end face of the male screw 1, parabola e 1 f 1 Endpoint f of 15 1 On the tooth top circle of the radial end face of the male screw 1, the arc line a 2 b 2 21 start point a 2 On the tip circle of the radial end face of the female screw 2, curve d 2 e 2 24 start point d 2 On the root circle of the radial end face of the female screw 2, curve d 2 e 2 Endpoint e of 24 2 The tooth tip circle of the radial end face of the female screw 2 is positioned, so that the engagement of the male screw 1 and the female screw 2 is more accurate and compact.
Specifically, as shown in fig. 3 and 4, the function equation of the five-segment curve in the molded line of the male screw 1 is: arc line a 1 b 1 Function equation of 11:
x 1 ＝r 11 *cos(t 1 )
y1＝r 11 *sin(t 1 )+39.5
0.5600034667＜t 1 ＜π/2
30＜r 11 ＜40
the elliptic line b 1 c 1 (12) Is defined by the functional equation:
x 2 ＝c*cos(t 2 *5/3)-d*sin(t 2 *5/3)+100*sin(t 2 )-0.21181331
y 2 ＝-d*cos(t 2 *5/3)-c*sin(t 2 *5/3)+100*cos(t 2 )-0.13279728
0＜t 2 ＜0.020154246828
c＝25.84122472
d＝44.29873138
the curve c 1 d 1 (13) Is defined by the functional equation:
x 3 ＝8.75*cos(t 31 )+x 31 -0.21181331
y 3 ＝8.75*sin(t 31 )+y 31 -0.13279728
t 31 ＝atan((y 31 -40*cos(t 3 ))/(x 31 -40*sin(t 3 )))+π
x 31 ＝a*cos(t 3 *5/3)-b*sin(t 3 *5/3)+100*sin(t 3 )
y 31 ＝-b*cos(t 3 *5/3)-a*sin(t 3 *5/3)+100*cos(t 3 )
0.02015425＜t 3 ＜1.04683546
a＝33.25469083
b＝39.65082645
the oval line d 1 e 1 (14) Is defined by the functional equation:
x 4 ＝r 12 *cos(t 41 )+100*sin(t 4 )-0.21181331
y 4 ＝r 12 *sin(t 41 )+100*cos(t 4 )-0.13279728
53.5＜r 12 ＜69.4
1.04683545＜t 4 ＜1.07507664
t 41 ＝atan(1/tan(t 4 ))+π
the parabola e 1 f 1 (15) Is defined by the functional equation:
x 5 ＝100*cos(k-t 5 *3/2)-60.75*cos(m+k-5*t 5 /2)
y 5 ＝sqrt(13690.5625-12150*cos(m-t 5 )-10000*cos(k-t 5 *3/2) 2 -3690.5625*cos(m+k-5*t 5 /2) 2 +12150*cos(k-t 5 *3/2)*cos(m+k-5*t 5 /2))
m＝43.4163477/180*π
k＝36.7705248/180*π
0＜t 5 ＜m；
the molded line equation of the female screw (2) is as follows:
the arc line a 2 b 2 (21) Is defined by the functional equation:
x 1 ＝r 21 *cost 1 e＜t 1 ＜f
y 1 ＝r 21 *sint 1 e＜t 1 ＜f
58＜r 21 ＜67
e＝0.6797
f＝π/3+atan(d/c)
c＝57.1290
d＝-19.9131
the arc line b 2 c 2 (22) Is defined by the functional equation:
x 2 ＝r 22 cost 2 +a g＜t 2 ＜e
y 2 ＝r 22 sint 2 +b g＜t 2 ＜e
7.0＜r 22 ＜10.5
e＝0.6797
g＝-1.0108
a＝39.6508
b＝33.2547
the arc line c 2 d 2 (23) Is defined by the functional equation:
x 3 ＝r 23 cost 3 +r 24 h＜t 3 ＜π
y 3 ＝r 23 sint 3 h＜t 3 ＜π
26.4＜r 23 ＜37.5
53.5＜r 24 ＜69.4
h＝2.1308
curve d 2 e 2 Function equation of 24:
x 4 ＝100*cos(t 4 *2/3)-70*cos(5*t 4 /3)
y 4 ＝sqrt(14900-14000*cos(t 4 )-4900*cos(5*t 4 /3) 2 +14000*cos(2*t 4 /3)*cos(5*t 4 /3)-10000*cos(2*t 4 /3) 2 )
0＜t 4 ＜0.63873885。
the dry oil-free screw molded line in the embodiment is formed by adopting the curves expressed by the function equation, and the curves are smoothly connected, so that the screw can be processed by adopting a plurality of processing methods such as milling, grinding and the like, the structure is simple, mass production and manufacturing are convenient, the precision is high, the area of a leakage triangular area formed by the meshing interface between the male screw and the female screw is reduced to the minimum, a large amount of leakage of compressed air is avoided, and the method can be suitable for and meet the requirements of markets for different clean gas energy consumption.
The dry oil-free screw molded line provided in the embodiment is applied to an air compressor, the air compressor adopting the technical scheme of the embodiment and the existing air compressor of a certain brand are subjected to comparison test, as shown in fig. 5, a test system comprises an air compressor driven by a motor, an air inlet flowmeter, a thermometer and an air filter of the compressor, the motor is connected with a reactor, a voltmeter, an amplitude modulation ammeter and a converter, an air outlet of the compressor is provided with the thermometer, the manometer and a pressure regulator, rated outlet working pressure is set to be 0.1MPa, the ambient temperature is 21 ℃, the working voltage is 402V/AC3, the average working current change range is 63-64A, the atmospheric pressure is 99.525KPa, the air compressor adopting the technical scheme of the embodiment and the existing air compressor of a certain brand are respectively used as air compression elements, the test is respectively carried out for 60min, and the test result is that: the flow of the existing air compressor of a certain brand is 19.8m3/min, and the flow of the air compressor adopting the technical scheme of the embodiment is 21.3-21.6 m3/min, so that compared with the existing dry air compressor, the dry oil-free screw air compressor provided by the invention has smaller triangular leakage area, and has larger exhaust capacity which exceeds that of the existing dry air compressor by more than 5% under the same working condition.
It should be noted that the principle and specific structure adopted by the above air compressor performance testing apparatus are known to those skilled in the art, and are only used for testing the performance of the air compressor adopting the technical scheme of the embodiment and the existing air compressor, and are not within the scope of the invention, so in this embodiment, the detailed structure and principle of the testing apparatus are not repeated.
The principles and embodiments of the present invention have been described with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In summary, the present description should not be construed as limiting the invention.
Claims (3)
1. A dry oil free screw profile, the screw comprising a male screw (1) and a female screw (2), the male screw (1) and the female screw (2) being parallel and intermeshed, characterized in that: the tooth ratio of the male screw (1) to the female screw (2) is 4:6;
wherein each tooth of the end face of the male screw (1) has the same tooth shape, all teeth are distributed in an array manner along the circumferential direction of the male screw (1), and the end face molded line of the male screw (1) is formed by an arc line a 1 b 1 (11) Elliptic line b 1 c 1 (12) Curve c 1 d 1 (13) Elliptic line d 1 e 1 (14) And parabola e 1 f 1 (15) Sequentially connected to form the composite material;
the female snailEach tooth shape of the end face of the rod (2) is the same, all teeth are distributed along the circumferential direction of the female screw (2), and the end face molded line of the female screw (2) is formed by an arc line a 2 b 2 (21) Arc line b 2 c 2 (22) Arc line c 2 d 2 (23) And curve d 2 e 2 (24) Sequentially connected to form the composite material;
the arc line a 1 b 1 (11) The origin a of (a) 1 On the tooth top circle of the male screw (1), the parabola e 1 f 1 (15) The starting point e of (2) 1 On the root circle of the male screw (1), the parabola e 1 f 1 (15) End point f of (2) 1 Is positioned on the tooth top circle of the male screw (1); the arc line a 2 b 2 (21) The origin a of (a) 2 On the tooth tip circle of the female screw (2), the curve d 2 e 2 (24) The starting point d of (2) 2 On the root circle of the female screw (2), the curve d 2 e 2 (24) Endpoint e of (2) 2 Is positioned on the tooth top circle of the female screw (2);
the molded line equation of the male screw (1) is as follows:
the arc line a 1 b 1 (11) Is defined by the functional equation:
x 1 ＝r 11 *cos(t 1 )
y 1 ＝r 11 *sin(t 1 )+39.5
0.5600034667＜t 1 ＜π/2
30＜r 11 ＜40
the elliptic line b 1 c 1 (12) Is defined by the functional equation:
x 2 ＝c*cos(t 2 *5/3)-d*sin(t 2 *5/3)+100*sin(t 2 )-0.21181331
y 2 ＝-d*cos(t 2 *5/3)-c*sin(t 2 *5/3)+100*cos(t 2 )-0.13279728
0＜t 2 ＜0.020154246828
c＝25.84122472
d＝44.29873138
the curve isc 1 d 1 (13) Is defined by the functional equation:
x 3 ＝8.75*cos(t 31 )+x 31 -0.21181331
y 3 ＝8.75*sin(t 31 )+y 31 -0.13279728
t 31 ＝atan((y 31 -40*cos(t 3 ))/(x 31 -40*sin(t 3 )))+π
x 31 ＝a*cos(t 3 *5/3)-b*sin(t 3 *5/3)+100*sin(t 3 )
y 31 ＝-b*cos(t 3 *5/3)-a*sin(t 3 *5/3)+100*cos(t 3 )
0.02015425＜t 3 ＜1.04683546
a＝33.25469083
b＝39.65082645
the oval line d 1 e 1 (14) Is defined by the functional equation:
x 4 ＝r 12 *cos(t 41 )+100*sin(t 4 )-0.21181331
y 4 ＝r 12 *sin(t 41 )+100*cos(t 4 )-0.13279728
53.5＜r 12 ＜69.4
1.04683545＜t 4 ＜1.07507664
t 41 ＝atan(1/tan(t 4 ))+π
the parabola e 1 f 1 (15) Is defined by the functional equation:
x 5 ＝100*cos(k-t 5 *3/2)-60.75*cos(m+k-5*t 5 /2)
y 5 ＝sqrt(13690.5625-12150*cos(m-t 5 )-10000*cos(k-t 5 *3/2) 2 -3690.5625*cos(m+k-5*t 5 /2) 2 +12150*cos(k-t 5 *3/2)*cos(m+k-5*t 5 /2))
m＝43.4163477/180*π
k＝36.7705248/180*π
0＜t 5 ＜m；
the molded line equation of the female screw (2) is as follows:
the arc line a 2 b 2 (21) Is defined by the functional equation:
x 1 ＝r 21 *cost 1 e＜t 1 ＜f
y 1 ＝r 21 *sint 1 e＜t 1 ＜f
58＜r 21 ＜67
e＝0.6797
f＝π/3+atan(d/c)
c＝57.1290
d＝-19.9131
the arc line b 2 c 2 (22) Is defined by the functional equation:
x 2 ＝r 22 cost 2 +a g＜t 2 ＜e
y 2 ＝r 22 sint 2 +b g＜t 2 ＜e
7.0＜r 22 ＜10.5
e＝0.6797
g＝-1.0108
a＝39.6508
b＝33.2547
the arc line c 2 d 2 (23) Is defined by the functional equation:
x 3 ＝r 23 cost 3 +r 24 h＜t 3 ＜π
y 3 ＝r 23 sint 3 h＜t 3 ＜π
26.4＜r 23 ＜37.5
53.5＜r 24 ＜69.4
h＝2.1308
the curve d 2 e 2 (24) Is defined by the functional equation:
x 4 ＝100*cos(t 4 *2/3)-70*cos(5*t 4 /3)
y 4 ＝sqrt(14900-14000*cos(t 4 )-4900*cos(5*t 4 /3) 2 +14000*cos(2*t 4 /3)*cos(5*t 4 /3)-10000*cos(2*t 4 /3) 2 )
0＜t 4 ＜0.63873885。
2. a dry oil free screw profile as claimed in claim 1, wherein: the number of teeth of the male screw (1) is 4, and the number of teeth of the female screw (2) is 6.
3. A dry oil-free screw air compressor, characterized by: a dry oil free screw profile comprising the oil free screw of claim 1 or 2.
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| CN201910374487.2A CN110056506B (en) | 2019-04-25 | 2019-04-25 | Dry-type oilless screw molded line and air compressor adopting same |
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| CN110056506B true CN110056506B (en) | 2024-03-22 |
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| CN205478297U (en) * | 2015-12-31 | 2016-08-17 | 江森自控空调冷冻设备(无锡)有限公司 | Screw compressor rotor |
| CN210317752U (en) * | 2019-04-25 | 2020-04-14 | 余德林 | Dry-type does not have oily screw rod molded lines and adopts air compressor of this screw rod |
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2019
- 2019-04-25 CN CN201910374487.2A patent/CN110056506B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1388376A (en) * | 1972-07-14 | 1975-03-26 | Linde Ag | Meshing screw pumps |
| US4412796A (en) * | 1981-08-25 | 1983-11-01 | Ingersoll-Rand Company | Helical screw rotor profiles |
| US4636156A (en) * | 1984-05-29 | 1987-01-13 | Compair Broomwade Limited | Screw rotor machines with specific tooth profiles |
| US4890992A (en) * | 1988-04-22 | 1990-01-02 | Fu Sheng Industry Co., Ltd. | Screw-rotor machine with an ellipse as a part of its male rotor |
| US5066205A (en) * | 1989-05-19 | 1991-11-19 | Excet Corporation | Screw rotor lobe profile for simplified screw rotor machine capacity control |
| CN1676935A (en) * | 2004-03-30 | 2005-10-05 | 李汗强 | Rotor tooth profile for helical-lobe compressor |
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| CN102834618A (en) * | 2010-02-12 | 2012-12-19 | 城市大学 | Lubrication of screw machines |
| CN102352846A (en) * | 2011-10-25 | 2012-02-15 | 上海戈里流体机械有限公司 | Oil-free dry screw compressor rotor |
| CN205478297U (en) * | 2015-12-31 | 2016-08-17 | 江森自控空调冷冻设备(无锡)有限公司 | Screw compressor rotor |
| CN210317752U (en) * | 2019-04-25 | 2020-04-14 | 余德林 | Dry-type does not have oily screw rod molded lines and adopts air compressor of this screw rod |
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|---|---|
| CN110056506A (en) | 2019-07-26 |
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Effective date of registration: 20240419 Address after: 341000, 1st floor, Building 15, Shipai Industrial Park Industrial Incubation Base, Xunwu County, Ganzhou City, Jiangxi Province Patentee after: Jiangxi Kelushi Precision Machinery Co.,Ltd. Country or region after: China Address before: 518000 17th floor, Xincheng building east, Futian District, Shenzhen City, Guangdong Province Patentee before: Yu Delin Country or region before: China |
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