CN202326245U - Rotor device driving male rotor by female rotor of screw compressor - Google Patents

Rotor device driving male rotor by female rotor of screw compressor Download PDF

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Publication number
CN202326245U
CN202326245U CN2011204602990U CN201120460299U CN202326245U CN 202326245 U CN202326245 U CN 202326245U CN 2011204602990 U CN2011204602990 U CN 2011204602990U CN 201120460299 U CN201120460299 U CN 201120460299U CN 202326245 U CN202326245 U CN 202326245U
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CN
China
Prior art keywords
rotor
female
male
end bearing
motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2011204602990U
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Chinese (zh)
Inventor
周雷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Don Han Bush (China) Industrial Co., Ltd.
Original Assignee
YANTAI HARTFORD COMPRESSORS CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by YANTAI HARTFORD COMPRESSORS CO Ltd filed Critical YANTAI HARTFORD COMPRESSORS CO Ltd
Priority to CN2011204602990U priority Critical patent/CN202326245U/en
Application granted granted Critical
Publication of CN202326245U publication Critical patent/CN202326245U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to a screw compressor, and particularly discloses a rotor device driving a male rotor by a female rotor of a screw compressor. The rotor device comprises a body, a suction end bearing group, an exhaust end bearing group, a motor stator, a motor rotor, as well as a female rotor and a male rotor which are meshed with each other, wherein the motor stator is installed on the upper part of the body; the motor rotor is installed in the motor stator; the female rotor and the male rotor are fixed on the body via the suction end bearing group and the exhaust end bearing group; and a shaft hole is formed in the centre of the motor rotor. The rotor device is characterized in that a stretching shaft of the female rotor is inserted in the shaft hole of the motor rotor and fixedly connected with the motor rotor. The female rotor and the male rotor are made from an alloy material. A nitrided layer is arranged on the meshing surface of the female rotor and the male rotor. The rotor device driving the male rotor by the female rotor of the screw compressor disclosed by the utility model has the beneficial effects of being simple and practical in structure, convenient in installation, small in the dimensions of the whole machine, and low in cost, is capable of effectively increasing the volumetric efficiency and operational efficiency of the screw compressor, and also reduces energy consumption.

Description

A kind of helical-lobe compressor the moon drags the rotor arrangement of sun
Technical field
The utility model relates to helical-lobe compressor, relates in particular to the rotor arrangement that a kind of helical-lobe compressor the moon drags sun.
Background technique
As everyone knows, in the body of helical-lobe compressor, parallel disposing a pair of intermeshing helical rotors.Usually have pitch circle outward the rotor of double wedge, be called male rotor; Rotor having recessed tooth in the pitch circle is called female rotor.The traditional screw compressor all adopts male rotor drive female rotor mode, and the male rotor rotating speed equals the rated speed of motor, and under the situation of 50Hz power supply, compressor rotary speed generally is lower than 3000rpm.Whenever the turn around number of teeth of the number of times that carries out exhaust and male rotor of compressor equates that to helical-lobe compressor, female rotor and male rotor gear ratio are generally at 6:4,6:5,7:5 etc., and the female rotor number of teeth will be more than the male rotor number of teeth.In order to increase the air displacement of helical-lobe compressor, helical-lobe compressor generally adopts the form of variable-frequency motor, or adopts the structure of overdrive gear, improves the rotating speed of compressor, and then improves the gettering quantity of compressor.But very high with the upper type cost, complex structure, the compressor overall price/performance ratio is poor.
The model utility content
The utility model provides a kind of helical-lobe compressor the moon to drag positive rotor arrangement to the deficiency that existing technology exists, and can under the identical condition of motor speed, effectively improve the air displacement of helical-lobe compressor.
The technological scheme that the utility model solves the problems of the technologies described above is following: a kind of helical-lobe compressor the moon drags the rotor arrangement of sun; Comprise body, suction end bearing pack, exhaust end bearing pack, motor stator, rotor and intermeshing female rotor and male rotor; Said motor stator is installed in the top of said body; Said rotor is installed in the said motor stator; Said female rotor and male rotor are fixed on the body through said suction end bearing pack, exhaust end bearing pack, and said rotor center is provided with axis hole, is characterized in: said female rotor projecting shaft is inserted in the axis hole of said rotor and is fixedly linked with said rotor.
The beneficial effect of the utility model is: simple and practical, easy for installation, the complete machine size is less and cost is low, can effectively improve the volumetric efficiency of helical-lobe compressor, improves the operational efficiency of compressor, cuts down the consumption of energy.
On the basis of technique scheme, the utility model can also be done following improvement.
Further, said female rotor and male rotor adopt alloy material to process.
Adopt the beneficial effect of above-mentioned further scheme to be, can guarantee the work rigidity of female rotor and male rotor, improve service life.
Further, the Surface of action of said female rotor and male rotor is provided with nitriding layer.
Adopt the beneficial effect of above-mentioned further scheme to be; Because in helical-lobe compressor; Power transmission between the negative and positive rotor is just carried out in a side of the rotor flank of tooth, and the active force that its Surface of action bears is very big, and the life-span of rotor is depended on the wear condition of Surface of action usually; Therefore Surface of action is provided with nitriding layer and helps improving its wear-resisting property, and then improves machine life.
Further, the gear ratio of said female rotor and male rotor is 6:4,6:5 or 7:5.
Adopt the beneficial effect of above-mentioned further scheme to be, can on speed and life performance, obtain optimum efficiency according to various different needs negative and positive rotor number of teeth proportionings.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 be the utility model rotor cross-sectional configuration schematic representation.
In Fig. 1 and Fig. 2,1, the exhaust end bearing pack; 2, body; 3, male rotor; 4, female rotor; 5, suction end bearing pack; 6, motor stator; 7, rotor.
Embodiment
Below in conjunction with accompanying drawing the principle and the characteristic of the utility model are described, institute gives an actual example and only is used to explain the utility model, is not the scope that is used to limit the utility model.
To shown in Figure 2, a kind of helical-lobe compressor the moon drags the rotor arrangement of sun, comprises body 2, suction end bearing pack 5, exhaust end bearing pack 1, motor stator 6, rotor 7 and intermeshing female rotor 4 and male rotor 3 like Fig. 1.Said motor stator 6 is installed in the top of said body 2; Said rotor 7 is installed in the said motor stator 6; Said female rotor 4 and male rotor 3 are fixed on the body 2 through said suction end bearing pack 5, exhaust end bearing pack 1; Said rotor 7 centers are provided with axis hole, it is characterized in that: said female rotor 4 projecting shafts are inserted in the axis hole of said rotor 7 and are fixedly linked with said rotor 7.
Said female rotor 4 adopts alloy material to process with male rotor 3.
The Surface of action of said female rotor 4 and male rotor 3 is provided with nitriding layer.
Said female rotor 4 is 6:4,6:5 or 7:5 with the gear ratio of male rotor 3.
The negative and positive rotor material of the utility model adopts alloy steel products 38CrMoAl;, rotor carries out material heat treatment after rough milling technology; Improve the hardness of steel itself; Before rotor carries out last correct grinding, semi-finished product are done further surfaces nitrided processing, form nitride layer to improve the surface hardness of material.Above measure satisfied the negative and positive rotor since the raising of rotating speed to the requirement of material hardness, the rotor wear resistance greatly improves.Also remedied and changeed the thiner defective of tooth when female rotor is done the active rotor.
The utility model principle is following: because female rotor 4 numbers of teeth are more than the number of teeth of male rotor 3; Therefore compressor electric motor whenever turns around; The number of times of compressor air-discharging equals the number of teeth of female rotor 4; Suppose that negative and positive rotor gear ratio is 6:4, the so cloudy form of sun of dragging will drag cloudy form air displacement will increase by 50% than sun.So; For the compressor of same row tolerance, the moon drags the desired revolution air displacement of rotor form of sun with corresponding minimizing, requires the outside dimension of rotor to reduce equally; Also be corresponding boundary dimension of dwindling whole compressor, saved cost of material and installing space.Because the raising of compressor rotary speed, the compressor internal leakage reduces, and volumetric efficiency increases, and has reduced the power consumption in the compression process, has improved the efficient of compressor simultaneously.
The above is merely the preferred embodiment of the utility model, and is in order to restriction the utility model, not all within the spirit and principle of the utility model, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the utility model.

Claims (4)

1. helical-lobe compressor the moon drags positive rotor arrangement; Comprise body, suction end bearing pack, exhaust end bearing pack, motor stator, rotor and intermeshing female rotor and male rotor; Said motor stator is installed in the top of said body; Said rotor is installed in the said motor stator; Said female rotor and male rotor are fixed on the body through said suction end bearing pack, exhaust end bearing pack, and said rotor center is provided with axis hole, it is characterized in that: said female rotor projecting shaft is inserted in the axis hole of said rotor and is fixedly linked with said rotor.
2. helical-lobe compressor the moon according to claim 1 drags the rotor arrangement of sun, it is characterized in that, said female rotor and male rotor adopt alloy material to process.
3. helical-lobe compressor the moon according to claim 1 drags the rotor arrangement of sun, it is characterized in that the Surface of action of said female rotor and male rotor is provided with nitriding layer.
4. drag positive rotor arrangement according to claim 1 or 2 or 3 described helical-lobe compressor the moon, it is characterized in that the gear ratio of said female rotor and male rotor is 6:4,6:5 or 7:5.
CN2011204602990U 2011-11-18 2011-11-18 Rotor device driving male rotor by female rotor of screw compressor Expired - Lifetime CN202326245U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011204602990U CN202326245U (en) 2011-11-18 2011-11-18 Rotor device driving male rotor by female rotor of screw compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011204602990U CN202326245U (en) 2011-11-18 2011-11-18 Rotor device driving male rotor by female rotor of screw compressor

Publications (1)

Publication Number Publication Date
CN202326245U true CN202326245U (en) 2012-07-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011204602990U Expired - Lifetime CN202326245U (en) 2011-11-18 2011-11-18 Rotor device driving male rotor by female rotor of screw compressor

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106837788A (en) * 2017-01-17 2017-06-13 张善君 Oil-free negative and positive birotor screw rod

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106837788A (en) * 2017-01-17 2017-06-13 张善君 Oil-free negative and positive birotor screw rod

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20161228

Address after: 264003 Shandong Province, Yantai city Laishan District dunham-bush Road No. 1

Patentee after: Don Han Bush (China) Industrial Co., Ltd.

Address before: 264003 Shandong city of Yantai province dunham-bush Laishan economic and Technological Development Zone, Road No. 2

Patentee before: Yantai Hartford Compressors Co., Ltd.

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20120711