CN220134187U - Sealing structure and oil injection screw compressor integrated machine comprising same - Google Patents
Sealing structure and oil injection screw compressor integrated machine comprising same Download PDFInfo
- Publication number
- CN220134187U CN220134187U CN202320716173.8U CN202320716173U CN220134187U CN 220134187 U CN220134187 U CN 220134187U CN 202320716173 U CN202320716173 U CN 202320716173U CN 220134187 U CN220134187 U CN 220134187U
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- sealing
- motor
- rotor
- stator
- compressor
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- 238000007789 sealing Methods 0.000 title claims abstract description 87
- 238000002347 injection Methods 0.000 title claims description 11
- 239000007924 injection Substances 0.000 title claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 description 24
- 238000007906 compression Methods 0.000 description 24
- 230000000694 effects Effects 0.000 description 7
- 238000012856 packing Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Abstract
The structure comprises a sealing wrapping piece, wherein the sealing wrapping piece is arranged between a stator and a rotor of a motor, and is axially provided with an opening end which is axially and hermetically connected with a shell of the screw compressor; the technical scheme of the utility model has the advantages of avoiding friction between the rotor shaft and the shaft seal and avoiding oil leakage.
Description
Technical Field
The utility model relates to the technical field of screw compressors, in particular to a sealing structure and an oil injection screw compressor integrated machine comprising the same.
Background
The oil injection screw compressor integrated machine is a compressor structure used in industry, one end of the structure is a screw compressor, the other end of the structure is an oil cooling motor structure, a rotor shaft in the screw compressor is connected with a rotor of the oil cooling motor, and therefore driving of power is achieved to enable the compressor to work; because of the type of oil injection, oil is contained in the compression chamber end, but cannot enter the oil-cooled motor structure, because the oil contains a certain amount of moisture, the moisture cannot contact the stator of the motor and the motor housing, because once contacted, the operation of the stator is necessarily affected (because if the moisture contacts the stator of the motor, the motor insulation is lowered, and the motor is damaged), and oil is also easily leaked from the motor housing; therefore, in order to avoid oil leakage, in the prior art, a shaft seal structure is arranged at the outer end of a bearing of a compressor rotor (the shaft seal is positioned between a compression cavity and a motor), the shaft seal structure is fixed on a seal end cover, in order to effectively prevent oil from the compression cavity from entering the motor, the shaft seal and a rotor shaft are required to be contacted so as to realize a sealing effect, but the rotor is rubbed with the shaft seal in a circumferential rotation process, abrasion of shaft seal materials is caused by the friction, the shaft seal is inevitably lost due to long-time rotation, the oil leakage phenomenon is caused at the position of the shaft seal, and the service life of the compressor is further influenced.
Disclosure of Invention
The utility model aims at the defects of the prior art and provides a sealing structure which can avoid friction between a rotor shaft and a shaft seal and avoid oil leakage.
In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a seal structure, this structure includes sealed parcel spare, sealed parcel spare set up between stator and the rotor of motor, and it is provided with an open end along the axial, this open end and screw compressor's shell axial sealing connection.
By adopting the structure, the rotor and the stator are isolated by arranging the sealing wrapping piece between the stator and the rotor of the motor, meanwhile, the axial end of the sealing wrapping piece is provided with the open end which faces the compression chamber of the compressor and is in sealing connection with the shell of the compression chamber, so that the rotor can be completely separated from the stator and the motor shell, meanwhile, the compression chamber is communicated with the sealing wrapping piece, oil in the compression chamber only flows between the compression chamber and the sealing wrapping piece and cannot enter the stator and the motor shell, oil leakage phenomenon cannot occur, and the oil enters the rotor and can effectively lubricate the rotor; more importantly, the arrangement of the sealing wrapping piece can introduce the arrangement of the shaft seal structure in the prior art, so that the structure is simplified, and the shaft seal installation procedure is simplified; the sealing packing piece is more convenient to install, only needs to be in sealing connection with the shell of the compression cavity, and is not connected with the rotor shaft of the compressor, and does not need to be in contact or wear, so that the sealing effect is more ideal.
Further, the open end of the sealing wrap is provided with a radially outwardly extending flange, and the flange is axially and sealingly connected with the shell of the compressor; by adopting the structure, the connection between the sealing wrapping piece and the shell of the compressor can be realized, and meanwhile, enough accommodating space is provided for the rotor of the motor, and the installation between the rotor and the rotor shaft of the motor can not be influenced.
Further, the sealing wrapping piece comprises a first wrapping part arranged on the outer peripheral surface of the rotor of the motor and a second wrapping part arranged on the outer end surface of the rotor shaft side of the motor, and the thickness of the first wrapping part is smaller than that of the second wrapping part; by adopting the structure, the rotor of the motor can be effectively wrapped, and meanwhile, the effective working distance between the rotor and the stator of the motor can be maintained without influencing the operation of the motor.
Further, the thickness of the flange is larger than that of the first wrapping part; by adopting the structure, the firmness of connection between the flange and the shell of the compressor can be improved, and the flange is not easy to break.
Furthermore, the flange and the shell of the compressor are in threaded connection, and by adopting the structure, the shell of the compressor can be connected with the flange more simply, so that the assembly and the disassembly are convenient.
Further, the inner wall of first parcel portion and the rotor of motor between be provided with first interval, the outer wall of first parcel portion and the stator of motor between be provided with the second interval, adopt this structure, avoid the contact between the stator and the rotor of sealed parcel piece and motor, prevent to cause the influence or cause the influence to the operation of rotor to the sealed effect of parcel piece.
Further, the first spacing is greater than the second spacing; by adopting the structure, as the rotor of the motor drives the rotor shaft of the compressor to axially rotate, the distance between the rotor shaft and the sealing wrapping piece is larger, so that the rotor shaft and the sealing wrapping piece are prevented from being contacted; the stator is fixed, so that the distance between the stator and the sealing wrapping piece is small, and the stator and the sealing wrapping piece are only required to be not contacted, so that a larger rotating space can be provided for a rotor of the motor, lubrication of oil to the rotor is facilitated, and meanwhile, the radial distance between the stator and the rotor is also considered, so that the motor runs normally.
Furthermore, the axial extension length of the sealing wrapping piece is larger than that of the stator of the motor and that of the rotor of the motor, and the setting of the structure can not only effectively seal the rotor of the motor, but also enable oil to have a more sufficient accommodating space; but also facilitates the mounting of the rotor of the motor in the sealing wrap.
Further, the sealing wrapping piece is a plastic piece; by adopting the scheme, the corrosion of oil to the sealing wrapping piece can be avoided, the weight is light, and the shielding can not be caused to the action between the stator and the rotor of the motor.
The utility model also provides an oil injection screw compressor integrated machine, which comprises the sealing structure; the integrated machine adopting the sealing structure does not need to be provided with an oil seal, and can not cause contact abrasion between the sealing element and the rotor shaft, thereby effectively improving the sealing effect of the integrated machine.
Drawings
FIG. 1 is a schematic cross-sectional view of the present utility model.
FIG. 2 is a schematic view of the compressor housing in a cross-sectional view of the present utility model.
Fig. 3 is a schematic diagram of a partial enlarged view of the structure of fig. 2.
FIG. 4 is a schematic view of the compressor housing and stator in a cross-sectional view of the present utility model.
FIG. 5 is a schematic illustration of the assembly of the compressor housing and seal package of the present utility model.
Fig. 6 is a schematic view of the structure of the sealing wrap of the present utility model.
FIG. 7 is a schematic structural view of a cross-sectional view of a seal package of the present utility model.
As shown in the accompanying drawings: 1. sealing wrap, 101, open end, 102, flange, 103, first wrap, 104, second wrap, 2, stator, 3, rotor, 4, housing, 5, first spacing, 6, second spacing.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the embodiments and the accompanying drawings, and it is apparent that the described embodiments are only preferred embodiments, not all embodiments. All other embodiments, based on the embodiments of the utility model, which a person of ordinary skill in the art would obtain without inventive faculty, are within the scope of the utility model;
furthermore, it is to be noted that: when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 7, a sealing structure of the present utility model comprises a sealing packing 1, wherein the sealing packing 1 is disposed between a stator 2 and a rotor 3 of a motor (the motor is a driving source for driving a rotor shaft in a screw compressor to rotate, so that intermeshing male and female rotors in the compressor rotate to operate), and is axially provided with an open end 101, and the open end 101 is axially and hermetically connected with a casing 4 of the screw compressor (the casing is disposed outside a compression chamber of the screw compressor for packing the male and female rotors).
By adopting the structure, the rotor and the stator are isolated by arranging the sealing wrapping piece between the stator and the rotor of the motor, meanwhile, the axial end of the sealing wrapping piece is provided with the open end which faces the compression chamber of the compressor and is in sealing connection with the shell of the compression chamber, so that the rotor can be completely separated from the stator and the motor shell, meanwhile, the compression chamber is communicated with the sealing wrapping piece, oil in the compression chamber only flows between the compression chamber and the sealing wrapping piece and cannot enter the stator and the motor shell, oil leakage phenomenon cannot occur, and the oil enters the rotor and can effectively lubricate the rotor; more importantly, the arrangement of the sealing wrapping piece can introduce the arrangement of the shaft seal structure in the prior art, so that the structure is simplified, and the shaft seal installation procedure is simplified; the sealing packing piece is more convenient to install, only needs to be in sealing connection with the shell of the compression cavity, and is not connected with the rotor shaft of the compressor, and does not need to be in contact or wear, so that the sealing effect is more ideal.
As shown in fig. 1-6, the open end 101 of the seal wrap 1 of the present utility model is provided with a radially outwardly extending flange 102, said flange 102 being in axially sealing engagement with the housing 4 of said compressor (i.e., the flange is in compression engagement with the housing, sealed to each other, such as by a gasket or other sealing means); by adopting the structure, the connection between the sealing wrapping piece and the shell of the compressor can be realized, and meanwhile, enough accommodating space is provided for the rotor of the motor, and the installation between the rotor and the rotor shaft of the motor can not be influenced.
As shown in fig. 1-4 and 7, the sealing package 1 according to the present utility model includes a first package portion 103 disposed on an outer peripheral surface of a rotor of the motor and a second package portion 104 disposed on an outer end surface of a rotor shaft side of the motor, wherein a thickness of the first package portion 103 is smaller than a thickness of the second package portion 104 (i.e., the thickness of the first package portion is smaller than a thickness of the second package portion disposed at an outer end portion of the rotor and between the stator and the rotor); by adopting the structure, the rotor of the motor can be effectively wrapped, and meanwhile, the effective working distance between the rotor and the stator of the motor can be maintained (the first wrapping part is thin, the radial distance between the stator and the rotor can be shortened), so that the operation of the motor is not influenced.
As shown in fig. 7, the thickness of the flange 102 according to the present utility model is greater than the thickness of the first wrapping portion 103; by adopting the structure, the firmness of connection between the flange and the shell of the compressor can be improved, and the flange is not easy to break.
As shown in fig. 1 to 5, the flange 103 of the present utility model is in threaded connection with the casing 4 of the compressor (i.e. the screw threads and the space for accommodating the bolts at the corresponding positions of the flange and the casing are used for realizing the threaded connection between the flange and the casing), and by adopting the structure, the casing of the compressor and the flange can be more simply connected, and the disassembly and the installation are convenient.
As shown in fig. 2-3, a first space 5 is arranged between the inner wall of the first wrapping part 103 and the rotor 3 of the motor, and a second space 6 is arranged between the outer wall of the first wrapping part 103 and the stator 2 of the motor.
As shown in fig. 1-4, the first spacing 5 of the present utility model is greater than the second spacing 6 (i.e., the seal wrap is closer to the stator side); by adopting the structure, as the rotor of the motor drives the rotor shaft of the compressor to axially rotate, the distance between the rotor shaft and the sealing wrapping piece is larger, so that the rotor shaft and the sealing wrapping piece are prevented from being contacted; the stator is fixed, so that the distance between the stator and the sealing wrapping piece is small, and the stator and the sealing wrapping piece are only required to be not contacted, so that a larger rotating space can be provided for a rotor of the motor, lubrication of oil to the rotor is facilitated, and meanwhile, the radial distance between the stator and the rotor is also considered, so that the motor runs normally.
As shown in fig. 1-4, the axial extension length of the sealing package 1 is greater than the axial extension length of the stator 2 and the rotor 3 of the motor, and the above structure can not only effectively seal the rotor of the motor, but also make the oil have more sufficient accommodation space; but also facilitates the mounting of the rotor of the motor in the sealing wrap.
As an example, the sealing package of the present utility model is a plastic part (for example, may be a hard plastic part structure with high hardness and less possibility of cracking); by adopting the scheme, the corrosion of oil to the sealing wrapping piece can be avoided, the weight is light, and the shielding can not be caused to the action between the stator and the rotor of the motor.
As shown in fig. 1-4, the utility model also provides an oil injection screw compressor integrated machine, which comprises the sealing structure of the utility model; the integrated machine adopting the sealing structure does not need to be provided with an oil seal, and can not cause contact abrasion between the sealing element and the rotor shaft, thereby effectively improving the sealing effect of the integrated machine.
As shown in fig. 1, the oil injection screw compressor integrated machine is an axially extending integrated machine, one end of the oil injection screw compressor integrated machine is a screw compressor, the other end of the oil injection screw compressor integrated machine is a motor, the screw compressor comprises a compression cavity and a shell, intermeshing male and female rotors are arranged in the compression cavity, bearings are arranged at two ends of the rotors through shaft sleeves, the male rotors are provided with an output end, namely a rotor shaft extending into a motor shell, the rotor shaft is connected with a rotor of the motor, and the male and female rotors are driven to rotate through the motor; the sealing wrap of the utility model is arranged between the stator and the rotor of the motor, and the opening end of the sealing wrap is connected with the shell of the compression chamber in a sealing way; according to the sealing structure, the sealing wrapping piece is arranged between the stator and the rotor of the motor, so that the rotor of the motor is communicated with the compression chamber of the screw compressor, oil only flows back and forth between the compression chamber and the sealing wrapping piece, and the oil cannot contact with the stator of the motor and the shell of the motor; the sealing packing piece is fixed with the shell of the compression chamber in a sealing way and does not contact with the rotor shaft, and the shell of the compression chamber is fixed in the running process of the compressor, so that the sealing packing piece is also fixed, does not contact with the rotating rotor shaft and is not worn, and the sealing effect is more ideal; the shaft seal and the shaft sleeve in the prior art are all cancelled, and the sealing wrapping piece is adopted, so that the installation is more convenient; the sealing wrap is free of contact and friction with the extension shaft (rotor shaft) of the screw compressor, thereby improving the service life of the compressor.
Claims (10)
1. A sealing structure, characterized in that: the structure comprises a sealing wrapping piece, wherein the sealing wrapping piece is arranged between a stator and a rotor of the motor, and is axially provided with an opening end which is axially and hermetically connected with a shell of the screw compressor.
2. The seal structure according to claim 1, wherein: the open end of the sealing wrap is provided with a radially outwardly extending flange which is axially and sealingly connected to the shell of the compressor.
3. The sealing structure according to claim 2, characterized in that: the sealing wrapping piece comprises a first wrapping part arranged on the outer peripheral surface of a rotor of the motor and a second wrapping part arranged on the outer end surface of the rotor shaft side of the motor, and the thickness of the first wrapping part is smaller than that of the second wrapping part.
4. A sealing arrangement according to claim 3, wherein: the thickness of the flange is larger than that of the first wrapping part.
5. The sealing structure according to claim 2, characterized in that: the flange is in threaded connection with the shell of the compressor.
6. A sealing arrangement according to claim 3, wherein: a first interval is arranged between the inner wall of the first wrapping part and the rotor of the motor, and a second interval is arranged between the outer wall of the first wrapping part and the stator of the motor.
7. The sealing structure according to claim 6, wherein: the first spacing is greater than the second spacing.
8. The seal structure according to claim 1, wherein: the axial extension of the sealing wrap is greater than the axial extension of the stator of the motor and the rotor of the motor.
9. The seal structure according to claim 1, wherein: the sealing wrapping piece is a plastic piece.
10. An oil injection screw compressor all-in-one, its characterized in that: the integrated machine comprising a sealing structure according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320716173.8U CN220134187U (en) | 2023-03-29 | 2023-03-29 | Sealing structure and oil injection screw compressor integrated machine comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320716173.8U CN220134187U (en) | 2023-03-29 | 2023-03-29 | Sealing structure and oil injection screw compressor integrated machine comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220134187U true CN220134187U (en) | 2023-12-05 |
Family
ID=88949633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320716173.8U Active CN220134187U (en) | 2023-03-29 | 2023-03-29 | Sealing structure and oil injection screw compressor integrated machine comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220134187U (en) |
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2023
- 2023-03-29 CN CN202320716173.8U patent/CN220134187U/en active Active
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