CN109209875B - Screw compressor and multistage screw transmission structure thereof - Google Patents
Screw compressor and multistage screw transmission structure thereof Download PDFInfo
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- CN109209875B CN109209875B CN201811307153.5A CN201811307153A CN109209875B CN 109209875 B CN109209875 B CN 109209875B CN 201811307153 A CN201811307153 A CN 201811307153A CN 109209875 B CN109209875 B CN 109209875B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 42
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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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
- F04C18/12—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
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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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
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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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
-
- 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
-
- 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
-
- 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
- F04C2240/80—Other components
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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 discloses a screw compressor and a multistage screw transmission structure thereof, wherein the multistage screw transmission structure comprises a multistage rotor set, the rotor set comprises a male rotor and a female rotor which are matched with each other, one male rotor in the multistage rotor set is a first male rotor (1) which is used for being rotationally connected with a driving end of a driving device, gears (3) which are coaxially arranged are arranged on the male rotor and/or the female rotor in the previous stage of the rotor set and the male rotor in the next stage of the rotor set in the two adjacent stages of the rotor sets, and the diameter of the male rotor in the previous stage of the rotor set is larger than that of the male rotor in the next stage of the rotor set; the gears (3) of the rotor groups of two adjacent stages are meshed with each other. The multistage screw transmission structure provided by the embodiment of the invention effectively reduces the overall length of the multistage rotor set matched transmission, reduces the overall structure of the compressor, effectively improves the structural compactness of the compressor, and reduces the noise and vibration of the overall operation of the compressor.
Description
The present application is a divisional application of the invention entitled "screw compressor and multi-stage screw driving structure thereof" and having application number 201610627297.3, which was filed 2016, 08, 01.
Technical Field
The invention relates to the technical field of compression equipment, in particular to a screw compressor and a multistage screw transmission structure thereof.
Background
With the increase of the compression amount of the compressor, the application of the multistage screw compressor is more and more extensive.
Taking a single-machine two-stage screw compressor as an example, the compressor is suitable for places such as freezing and refrigeration rooms, low-temperature environment laboratories and the like with low evaporation temperature and large cold quantity requirement.
Currently, a single-unit two-stage screw compressor has two-stage rotor sets including a low-pressure stage male rotor and a high-pressure stage male rotor. One end of the low-pressure stage male rotor is connected with the driving device, and the other end of the low-pressure stage male rotor is connected with one end of the high-pressure stage male rotor through a coupler. Because the two-stage rotor adopts the form of coupling joint for the cooperation length of two-stage rotor group is longer, makes the overall structure overlength of compressor, and when the volume of compressor is great and the structure is loose, make the compressor wholly move noise and vibration higher.
Therefore, how to improve the compactness of the compressor and reduce noise and vibration is a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of this, the present invention provides a multi-stage screw transmission structure to improve the compactness of the compressor and reduce noise and vibration. The invention also discloses a screw compressor.
In order to achieve the purpose, the invention provides the following technical scheme:
according to the technical scheme, the multistage screw transmission structure comprises a multistage rotor set, wherein the rotor set comprises a male rotor and a female rotor which are matched with each other, one male rotor in the multistage rotor set is a first male rotor which is used for being rotationally connected with a driving end of a driving device, in two adjacent rotor sets, a male rotor and/or a female rotor in a rotor set of a previous stage and a male rotor in a rotor set of a next stage are/is provided with gears which are coaxially arranged, and the diameter of the male rotor in the rotor set of the previous stage is larger than that of the male rotor in the rotor set of the next stage;
the gears of adjacent two of the rotor sets are intermeshed.
Preferably, in the multi-stage screw transmission structure, the number of the rotor sets is two.
Preferably, in the above multistage screw drive structure, the gear is located at an end of the rotor set.
Preferably, in the multi-stage screw transmission structure, the rotors in the adjacent two stages of rotor sets, which are in matched transmission, are respectively an active rotor and a passive rotor;
the opposite ends of the driving rotor and the driven rotor are provided with the gears.
Preferably, in the above multistage screw drive structure, two female rotors that mate with two adjacent male rotors are located on the same side of the male rotors.
Preferably, in the multi-stage screw transmission structure, the outer wall of the rotor set has an external thread section, and the gear has an internal thread hole matched with the external thread section.
Preferably, the multi-stage screw transmission structure further comprises a lock nut which is matched with the external thread section and is used for avoiding the gear from slipping.
Preferably, in the multi-stage screw transmission structure, the first male rotor is a low-pressure stage male rotor.
The invention also provides a screw compressor, which comprises a compressor shell and a multi-stage screw transmission structure positioned in the compressor shell, wherein the multi-stage screw transmission structure is any one of the multi-stage screw transmission structures.
Preferably, in the screw compressor, the number of the compressor housings is plural and corresponds to the rotor set one by one.
Preferably, the screw compressor further comprises an adjusting hole arranged on the compressor housing and used for adjusting the position of the gear;
the adjusting holes are arranged corresponding to the gears.
Preferably, in the screw compressor, the adjusting hole is an air supplement hole.
According to the multi-stage screw transmission structure provided by the invention, one of the male rotors is the first male rotor, the first male rotor is used for being rotatably connected with the driving end of the driving device so as to provide rotating force for the male rotors, and the diameter of the male rotor in the previous stage of rotor set is larger than that of the male rotor in the next stage of rotor set. The gears of the adjacent two-stage rotor sets are meshed with each other. Through the arrangement, the male rotors in the multistage rotor set rotate. Because the transmission of the adjacent two-stage rotor sets is completed through gear engagement, the arrangement of a coupler is avoided, and therefore, rotors in the adjacent two-stage rotor sets can be in matched transmission without coaxial alignment, the integral length of the multi-stage rotor set in matched transmission is effectively reduced, the integral structure of the compressor is reduced, the structural compactness of the compressor is effectively improved, the noise and vibration of the integral operation of the compressor are reduced, and the service life of an operating gear and the operation stability are effectively improved.
The invention also provides a screw compressor with the multi-stage screw transmission structure. Since the multi-stage screw driving structure has the above technical effects, the screw compressor having the multi-stage screw driving structure should also have the same technical effects, and will not be described in detail herein.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a multi-stage screw drive structure provided in an embodiment of the present invention;
FIG. 2 is a side view of a gear according to an embodiment of the present invention;
FIG. 3 is a schematic view of the internal structure of a screw compressor according to an embodiment of the present invention;
fig. 4 is a schematic side view of a multi-stage screw driving structure according to an embodiment of the present invention.
Detailed Description
The invention discloses a multi-stage screw transmission structure, which aims to improve the structural compactness of a compressor and reduce noise and vibration. The invention also discloses a screw compressor.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a multistage screw transmission structure, which includes a multistage rotor set, where the rotor set includes a male rotor and a female rotor that are matched with each other, the multistage rotor set includes a plurality of male rotors and female rotors that are in one-to-one correspondence with the male rotors, one male rotor of the male rotors is a first male rotor 1, and the first male rotor 1 is configured to be rotationally connected to a driving end of a driving device. In the adjacent two-stage rotor set, the male rotor and/or the female rotor in the previous-stage rotor set and the male rotor in the next-stage rotor set are/is provided with a gear 3 which is coaxially arranged; the gears 3 of adjacent two-stage rotor sets are meshed with each other.
That is, in the embodiment of the present invention, the gear 3 may be provided on two male rotors, which are the male rotor in the preceding-stage rotor group and the male rotor in the succeeding-stage rotor group, respectively. The gears 3 on the two male rotors are meshed with each other, so that the gears 3 of the two adjacent rotor groups are meshed with each other, and the transmission between the two adjacent rotor groups is realized.
The gear 3 may be provided on the female rotor in the preceding-stage rotor set and the male rotor in the succeeding-stage rotor set. The gears 3 of the adjacent two-stage rotor groups are meshed with each other through the mutual meshing of the gears 3 on the female rotor and the male rotor, and the transmission between the adjacent two-stage rotor groups is realized.
The gears 3 can also be arranged on the male rotor and the female rotor in the previous-stage rotor set, namely, the previous-stage rotor set is provided with two gears 3; and, set up gear 3 on the male rotor in the rotor set of the latter stage, through gear 3 on the male rotor with in the rotor set of the latter stage and two gears 3 intermeshing in the rotor set of the former stage, this scheme can also further improve the meshing precision of gear 3 and driven stability.
In the multi-stage screw transmission structure provided by the embodiment of the invention, one of the plurality of male rotors is the first male rotor 1, and the first male rotor 1 is used for being rotationally connected with the driving end of the driving device so as to provide rotating force for the plurality of male rotors. The gears 3 of the adjacent two-stage rotor sets are meshed with each other. Through the arrangement, the male rotors in the multistage rotor set rotate. Because the transmission is accomplished through the meshing of gear 3 to adjacent two-stage rotor group, avoid setting up the shaft coupling, consequently, the rotor in the adjacent two-stage rotor group need not coaxial alignment also can cooperate the transmission, has effectively reduced the driven whole length of multistage rotor group cooperation, has reduced the overall structure of compressor, has effectively improved the compact structure nature of compressor to, the noise and the vibration of the whole operation of compressor have been reduced.
It can be understood that the gear 3 can be lubricated and frozen by the existing refrigeration oil in the screw compressor, so that the operation safety and the service life of parts are ensured. In the two adjacent rotor groups, the former rotor group is a rotor group close to the driving device, and the latter rotor group is a rotor group far away from the driving device. The driving force transmitted by the driving device is transmitted to the rotor set of the next stage from the rotor set of the previous stage.
As shown in fig. 1, the number of male rotors is two. Therefore, the number of rotor groups is two, that is, the multi-stage screw drive structure in the present embodiment is a two-stage screw drive structure. In the present embodiment, the two male rotors are a first male rotor 1 and a second male rotor 2, and further include a first female rotor 5 engaged with the first male rotor 1 and a second female rotor 6 engaged with the second male rotor 2.
In this embodiment, the first male rotor 1 is used for being rotationally connected with the driving end of the driving device, and the gear 3 on the first male rotor 1 is meshed with the gear 3 on the second male rotor 2, so that the first male rotor 1 rotates to drive the second male rotor 2 to rotate.
The first female rotor 5 and the second male rotor 2 may be provided with gears 3, and the gears 3 of the first female rotor 5 and the gears 3 of the second male rotor 2 may mesh with each other.
The number of the male rotors can be three, namely, an intermediate male rotor is also arranged between the first male rotor 1 and the second male rotor 2, and two gears 3 can be arranged on the intermediate male rotor and are respectively meshed with the gears 3 on the first male rotor 1 and the second male rotor 2; a gear 3 may also be provided which co-operates with the gears 3 on the first male rotor 1 and the second male rotor 2.
As shown in fig. 1 and 2, the gear 3 is preferably a spur gear in order to avoid axial forces on the male rotor.
The gear 3 can also be arranged as a cylindrical helical gear; alternatively, the gear 3 is provided as a conical spur gear 3; alternatively, the gear 3 is provided as a conical helical gear 3.
In the present embodiment, the gear 3 is located at the end of the rotor set. Wherein, the rotor of the rotor set is a male rotor or a female rotor provided with a gear. Taking the example of the male rotor provided with the gear 3, the gear 3 is arranged at the end of the male rotor, so that the gear 3 is far away from the screw section of the male rotor, and the mutual interference between the gear 3 on the male rotor and the female rotor is avoided.
Preferably, the rotors in the two adjacent rotor groups which are in matched transmission are respectively an active rotor and a passive rotor; the opposite ends of the driving rotor and the driven rotor are provided with gears 3. As shown in fig. 1, the first male rotor 1 drives the second male rotor 2 to rotate, so that the first male rotor 1 is an active rotor and the second male rotor 2 is a passive rotor. Wherein, the looks remote site of first male rotor 1 and second male rotor 2 is provided with gear 3 for first male rotor 1 and second male rotor 2 are arranged along the direction of keeping away from drive arrangement, have made things convenient for the setting of compressor housing, have also made things convenient for mutually supporting of first male rotor 1 and second male rotor 2.
The gear 3 may also be disposed at the same side end of the driving rotor (first male rotor 1) and the driven rotor (second male rotor 2) so that the first male rotor 1 and the second male rotor 2 are arranged in a direction perpendicular to the axis of the male rotors.
The two female rotors with which the two adjacent male rotors are mated are located on the same side of the male rotor. In this embodiment, the first female rotor 5 is engaged with the first male rotor 1, the second female rotor 6 is engaged with the second male rotor 2, and the first female rotor 5 and the second female rotor 6 are located on the same side of the first male rotor 1 and the second male rotor 2. As shown in fig. 1, the first female rotor 5 is located below the first male rotor 1 in the drawing, and the second female rotor 6 is located below the second male rotor 2 in the drawing. So that the clearance (first compression cavity) between the first female rotor 5 and the first male rotor 1 and the clearance (second compression cavity) between the second female rotor 6 and the second male rotor 2 are oppositely arranged, and the arrangement of the compressor shell is convenient. It is also possible to position the two female rotors on either side of the male rotor, which is not described in detail here and is within the scope of protection.
The outer wall of the rotor set is provided with an external thread section, and the gear 3 is provided with an internal thread hole matched with the external thread section. That is, the gear 3 is screwed to the male rotor, and the stability of connection between the gear 3 and the male rotor is further improved. It is also possible to provide a smooth bore in the gear 3, with which the male rotor interferes or over-fits. Other ways are possible, just ensuring that the gear 3 and the male rotor rotate together. Wherein, the rotor of the rotor set is a male rotor or a female rotor provided with a gear.
As shown in fig. 1, the multi-stage screw transmission structure provided by the embodiment of the present invention further includes a lock nut, and the lock nut is engaged with the external thread section of the rotor to prevent the gear 3 from slipping. Through setting up lock nut, further improved the fixed stability of gear 3 on the rotor, avoided gear 3 slippage from the rotor.
In the embodiment, the first male rotor 1 is provided with a rotor key slot for matching and connecting with the driving end of the driving device; the rotor key groove is internally provided with a rotor key 11 matched with the rotor key groove. That is, the first male rotor 1 is connected to the drive end of the drive device by the rotor key 11. The drive end of the drive device can also be geared with the first male rotor 1, which is not described in detail here.
The driving means is preferably a motor.
In this embodiment, the first male rotor 1 is a low pressure stage male rotor. As shown in fig. 1 and 4, the first male rotor 1 is a low-pressure-stage male rotor, and therefore, the second male rotor 2 is a high-pressure-stage male rotor, and in order to match the compression amount, the diameter of the first male rotor 1 is greater than that of the second male rotor 2, wherein the first male rotor 1 is a male rotor in a previous-stage rotor set, and the second male rotor 2 is a male rotor in a next-stage rotor set, and since the diameter of the male rotor in the previous-stage rotor set is greater than that of the male rotor in the next-stage rotor set, and in combination with gear transmission, when the two-stage compression ratios are equal, the forces on the male rotor in the previous-stage rotor set and the male rotor in the next-stage rotor set are balanced, and vibration noise can be effectively reduced. Specifically, during operation, pressure increases after the compression of the preceding stage rotor group, the medium volume reduces, preceding stage rotor group position volume flow is greater than the position volume flow of the next stage rotor group this moment, but mass flow equals, according to the conservation of mass principle, when the positive rotor diameter in the preceding stage rotor group is greater than the positive rotor diameter in the next stage rotor group, two-stage discharge capacity reaches best ratio according to user's demand, and when the rotor capacity of preceding stage rotor group and next stage rotor group matches, can not lead to the pressure to suppress greatly or the capacity undersize leads to the low pressure level suction pressure to hang down because of the excess intermediate capacity, two-stage pressure ratio equals, the atress is close, thereby the atress is balanced, connect gear department atress minimum this moment, more be favorable to the cooperation transmission of first positive rotor 1 and second positive rotor 2, effectively improve operation gear life and operating stability.
The embodiment of the invention also provides a screw compressor, which comprises a compressor shell and a multi-stage screw transmission structure positioned in the compressor shell, wherein the multi-stage screw transmission structure is any one of the multi-stage screw transmission structures. Since the multi-stage screw driving structure has the above technical effects, the screw compressor having the multi-stage screw driving structure should also have the same technical effects, and will not be described in detail herein.
The male rotor of the multi-stage screw transmission structure and/or the female rotor of the multi-stage screw transmission structure are/is erected in the compressor shell through the bearing, so that the rotation stability is improved, and the friction loss is reduced.
The compressor housing includes a low pressure stage compressor housing and a high pressure stage compressor housing.
As shown in fig. 3, the first male rotor 1 and the first female rotor 5 are installed in the low-pressure stage compressor casing. The first male rotor 1 is connected with a driving device (motor) through a rotor key 11, and the first male rotor 1 and one end of the first female rotor 5 are fixed in an exhaust bearing seat of a low-pressure stage compressor shell through a low-pressure stage exhaust bearing group 8. The first male rotor 1 and the other end (the end close to the driving device) of the first female rotor 5 are fixed in a suction bearing seat of a low-pressure stage compressor shell through a low-pressure stage suction bearing group 7.
The second male rotor 2 and the second female rotor 6 are installed in the high-pressure stage compressor housing, and one end of the second male rotor 2 and one end of the second female rotor 6 are fixed in an exhaust bearing seat of the high-pressure stage compressor housing through a high-pressure stage exhaust bearing group 10. The other ends of the second male rotor 2 and the second female rotor 6 (the end close to the first male rotor 1) are fixed in a suction bearing seat of a high-pressure stage compressor shell through a high-pressure stage suction bearing group 9.
During installation, the low-pressure-stage rotor set is assembled (the first male rotor 1, the first female rotor 5, the bearing and other parts are installed in the low-pressure-stage compressor shell), the high-pressure-stage rotor set is assembled (the second male rotor 2, the second female rotor 6, the bearing and other parts are installed in the high-pressure-stage compressor shell), the positions of the gear 3 on the first male rotor 1 and the gear 3 on the second male rotor 2 are adjusted, the two gears 3 are meshed with each other, and then the low-pressure-stage compressor shell and the high-pressure-stage compressor shell are aligned, connected and installed.
Through the arrangement, the number of the compressor shells is multiple and corresponds to the number of the rotor groups one by one. That is, the compressor housing includes a low-pressure stage compressor housing and a high-pressure stage compressor housing. Through the arrangement, the compressor is convenient to assemble. A compressor housing may also be provided, with the multi-stage rotor set mounted within the same compressor housing.
The screw compressor provided by the embodiment of the invention further comprises an adjusting hole arranged on the shell of the compressor, and the adjusting hole is used for adjusting the position of the gear 3, so that the adjusting hole and the gear 3 are correspondingly arranged. After the screw compressor is installed, the position of the gear 3 can be adjusted again through the adjusting hole by using a tool so as to ensure the installation precision.
Preferably, the regulating orifice is an air supplement orifice. So as to improve the application range of the adjusting hole.
As shown in fig. 4, the first male rotor 1 and the second male rotor 2 may not be on the same horizontal plane. Of course, the first male rotor 1 and the second male rotor 2 may be disposed on the same horizontal plane. The horizontal plane is the horizontal plane of the screw compressor in the normal working state.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A screw compressor comprises a compressor shell and a multi-stage screw transmission structure positioned in the compressor shell, wherein the multi-stage screw transmission structure is used for the screw compressor to compress gas, and is characterized in that the multi-stage screw transmission structure comprises a multi-stage rotor set, the rotor set comprises a male rotor and a female rotor which are matched with each other, one male rotor in the multi-stage rotor set is a first male rotor (1) which is used for being rotationally connected with a driving end of a driving device, gears (3) which are coaxially arranged are arranged on the male rotor and/or the female rotor in the previous-stage rotor set and the male rotor in the next-stage rotor set in the two adjacent-stage rotor set, and the diameter of the male rotor in the previous-stage rotor set is larger than that of the male rotor in the next-stage rotor set;
the gears (3) of the rotor groups of two adjacent stages are meshed with each other;
the number of the compressor shells is multiple and corresponds to the rotor groups one by one;
the adjusting hole is arranged on the compressor shell and used for adjusting the position of the gear (3);
the adjusting holes are arranged corresponding to the gears (3).
2. The screw compressor according to claim 1, wherein the number of rotor groups is two.
3. -screw compressor according to claim 1, characterised in that the gear wheel (3) is located at the end of the rotor set.
4. The screw compressor according to claim 3, wherein the rotors in the two adjacent rotor sets are driving rotors and driven rotors;
the opposite ends of the driving rotor and the driven rotor are provided with the gears (3).
5. The screw compressor according to claim 1, wherein two female rotors engaged with two adjacent male rotors are located on the same side of the male rotors.
6. -screw compressor according to claim 1, characterised in that the rotors of the rotor set have an external threaded section on their outer wall, and in that the gear wheel (3) has an internal threaded hole which cooperates with the external threaded section.
7. -screw compressor according to claim 6, characterised in that it also comprises a locking nut cooperating with the external threaded section for avoiding the slipping of the gear wheel (3).
8. -screw compressor according to claim 1, characterised in that the first male rotor (1) is a low-pressure stage male rotor.
9. The screw compressor according to claim 1, wherein the adjustment hole is a gas filling hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811307153.5A CN109209875B (en) | 2016-08-01 | 2016-08-01 | Screw compressor and multistage screw transmission structure thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811307153.5A CN109209875B (en) | 2016-08-01 | 2016-08-01 | Screw compressor and multistage screw transmission structure thereof |
| CN201610627297.3A CN106050657A (en) | 2016-08-01 | 2016-08-01 | Screw compressor and multistage screw transmission structure thereof |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610627297.3A Division CN106050657A (en) | 2016-08-01 | 2016-08-01 | Screw compressor and multistage screw transmission structure thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109209875A CN109209875A (en) | 2019-01-15 |
| CN109209875B true CN109209875B (en) | 2020-05-01 |
Family
ID=57196142
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610627297.3A Withdrawn CN106050657A (en) | 2016-08-01 | 2016-08-01 | Screw compressor and multistage screw transmission structure thereof |
| CN201811307153.5A Active CN109209875B (en) | 2016-08-01 | 2016-08-01 | Screw compressor and multistage screw transmission structure thereof |
| CN201811229672.4A Active CN109322824B (en) | 2016-08-01 | 2016-08-01 | Screw compressor and multistage screw transmission structure thereof |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610627297.3A Withdrawn CN106050657A (en) | 2016-08-01 | 2016-08-01 | Screw compressor and multistage screw transmission structure thereof |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811229672.4A Active CN109322824B (en) | 2016-08-01 | 2016-08-01 | Screw compressor and multistage screw transmission structure thereof |
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| Country | Link |
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| CN (3) | CN106050657A (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762644A (en) * | 2017-03-02 | 2017-05-31 | 奥夫尔科精铸机械（昆山）有限公司 | A kind of multiple compression helical-lobe compressor |
| CN108443146A (en) * | 2018-05-24 | 2018-08-24 | 上海维尔泰克螺杆机械有限公司 | A kind of two-stage helical-lobe compressor of band grade room machine mixer |
| CN108644117A (en) * | 2018-07-25 | 2018-10-12 | 宁波鲍斯能源装备股份有限公司 | A kind of three-level screw drive structure and its helical-lobe compressor |
| CN109737057A (en) * | 2018-12-27 | 2019-05-10 | 珠海格力电器股份有限公司 | Multistage screw compressor and air conditioner |
| CN109578275A (en) * | 2018-12-27 | 2019-04-05 | 珠海格力电器股份有限公司 | Two-stage screw compressor and two-stage rotor set mounting structure used by same |
| CN109441813A (en) * | 2018-12-27 | 2019-03-08 | 珠海格力电器股份有限公司 | Multistage screw compressor and air conditioner |
| CN109441812A (en) * | 2018-12-27 | 2019-03-08 | 珠海格力电器股份有限公司 | Multistage screw compressor and air conditioner |
| CN114320910B (en) * | 2020-12-02 | 2023-05-19 | 珠海格力电器股份有限公司 | Screw compressor and air conditioning system |
| CN112879290B (en) * | 2021-01-25 | 2022-06-14 | 马鞍山赛力文机械有限公司 | Double-screw main machine structure driven by front end gear and rear end gear |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182680A (en) * | 2011-06-02 | 2011-09-14 | 重庆大学 | Multi-stage speed changing screw pump |
| CN104912800A (en) * | 2015-07-10 | 2015-09-16 | 金鑫 | Stand-alone two-stage variable frequency screw rod compressor with adjustable internal volume ratio |
| CN205172939U (en) * | 2015-12-12 | 2016-04-20 | 广东正力精密机械有限公司 | Single screw rod two -stage or multi -stage compressor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100855187B1 (en) * | 2006-11-16 | 2008-09-01 | (주)엘오티베큠 | Composite dry vacuum pump having roots and screw rotor |
| JP5110882B2 (en) * | 2007-01-05 | 2012-12-26 | 株式会社日立産機システム | Oil-free screw compressor |
| JP2008196390A (en) * | 2007-02-13 | 2008-08-28 | Toyota Industries Corp | Variable volume fluid machine |
| CN203835726U (en) * | 2014-05-23 | 2014-09-17 | 英诺伟特（昆山）能源机械有限公司 | Two-stage compression oil injection screw main engine |
| CN204646663U (en) * | 2015-04-24 | 2015-09-16 | 福建雪人股份有限公司 | Multiscrew compressor |
| CN204877948U (en) * | 2015-08-14 | 2015-12-16 | 温岭市鑫磊空压机有限公司 | Second grade compression screw air compressor |
| CN205918589U (en) * | 2016-08-01 | 2017-02-01 | 珠海格力电器股份有限公司 | Screw compressor and multistage screw transmission structure thereof |
-
2016
- 2016-08-01 CN CN201610627297.3A patent/CN106050657A/en not_active Withdrawn
- 2016-08-01 CN CN201811307153.5A patent/CN109209875B/en active Active
- 2016-08-01 CN CN201811229672.4A patent/CN109322824B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182680A (en) * | 2011-06-02 | 2011-09-14 | 重庆大学 | Multi-stage speed changing screw pump |
| CN104912800A (en) * | 2015-07-10 | 2015-09-16 | 金鑫 | Stand-alone two-stage variable frequency screw rod compressor with adjustable internal volume ratio |
| CN205172939U (en) * | 2015-12-12 | 2016-04-20 | 广东正力精密机械有限公司 | Single screw rod two -stage or multi -stage compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109322824B (en) | 2021-02-19 |
| CN109209875A (en) | 2019-01-15 |
| CN106050657A (en) | 2016-10-26 |
| CN109322824A (en) | 2019-02-12 |
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