CN117514806A - Rotor structure of vertical claw type dry vacuum pump, vertical vacuum pump and use method - Google Patents
Rotor structure of vertical claw type dry vacuum pump, vertical vacuum pump and use method Download PDFInfo
- Publication number
- CN117514806A CN117514806A CN202311736548.8A CN202311736548A CN117514806A CN 117514806 A CN117514806 A CN 117514806A CN 202311736548 A CN202311736548 A CN 202311736548A CN 117514806 A CN117514806 A CN 117514806A
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- rotating shaft
- rotor
- cooling
- vacuum pump
- liquid
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 210000000078 claw Anatomy 0.000 title claims abstract description 10
- 239000000110 cooling liquid Substances 0.000 claims abstract description 78
- 238000001816 cooling Methods 0.000 claims abstract description 74
- 230000005484 gravity Effects 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 68
- 238000004891 communication Methods 0.000 claims description 33
- 238000007789 sealing Methods 0.000 claims description 22
- 230000007246 mechanism Effects 0.000 claims description 19
- 238000005192 partition Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000002826 coolant Substances 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000001105 regulatory effect Effects 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
- 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
- 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
- F04C18/123—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 radially or approximately radially from the rotor body extending tooth-like elements, co-operating with recesses in the other rotor, e.g. one tooth
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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
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
-
- 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
- F04C29/04—Heating; Cooling; Heat insulation
-
- 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
Abstract
The invention discloses a rotor structure of a vertical claw type dry vacuum pump, the vertical vacuum pump and a use method thereof, wherein the rotor structure comprises a plurality of rotor pairs which are spirally arranged along the axial direction of a rotating shaft, the rotors of the same rotor pair are in conjugate engagement, and when the rotating shaft is driven to rotate, the rotor pairs are used for sucking air and exhausting air step by step to vacuumize; the rotor comprises a rotor main body, wherein the rotor main body is provided with a mounting hole matched with a corresponding rotating shaft, a cooling cavity is arranged in the rotor main body and is communicated with a cooling flow channel arranged in the rotating shaft, and the cooling cavity adopts a variable cross-section structure, so that the whole gravity center of the rotor main body is positioned on the axis of the corresponding rotating shaft after cooling liquid is filled; according to the invention, the cooling cavity is arranged in the rotor main body and is communicated with the cooling flow channel in the rotating shaft, so that cooling liquid can directly enter the rotor main body to cool the rotor, the cooling effect on the rotor is improved, the efficiency is improved, and the long-time operation of the vacuum pump is kept.
Description
Technical Field
The invention relates to the technical field of claw-type dry vacuum pumps, in particular to a rotor structure of a vertical claw-type dry vacuum pump, a vertical vacuum pump and a use method.
Background
The claw type dry vacuum pump is formed by connecting multiple stages of rotors in series or connecting a Roots rotor with the multiple stages of rotors in series; the claw type dry vacuum pump utilizes the rotor to carry out air extraction and compression of air, so that the temperature of the rotor is increased, and the operation of the vacuum pump is influenced, but the cooling mode of the existing vacuum pump can only reduce the temperature of an internal air cavity through the cooling of a pump body, and the rotor cannot be directly cooled, so that the cooling efficiency is low, and the energy consumption is increased; especially for vertical vacuum pump, because the pivot is in the state of vertical placing during operation, pump body operation vibration is big, and the rotor operation is unusual because of the temperature influence more easily.
Disclosure of Invention
The technical purpose is that: aiming at the defects of the existing claw type dry vacuum pump rotor cooling, the invention discloses a vertical claw type dry vacuum pump rotor structure, a vertical vacuum pump and a use method, wherein the rotor can be directly cooled, the heat exchange efficiency is improved, and meanwhile, the operation stability of the vacuum pump is improved.
The technical scheme is as follows: in order to achieve the technical purpose, the invention adopts the following technical scheme:
a rotor structure of a vertical claw-type dry vacuum pump comprises a plurality of rotor pairs which are spirally arranged along the axial direction of a rotating shaft, wherein the rotors of the same rotor pair are in conjugate engagement, and when the rotating shaft is driven to rotate, the rotors are used for sucking air and exhausting air step by step to vacuumize; the rotor comprises a rotor main body, wherein the rotor main body is provided with a mounting hole matched with a corresponding rotating shaft, a cooling cavity is arranged in the rotor main body and is communicated with a cooling flow passage arranged in the rotating shaft, and the cooling cavity adopts a variable cross-section structure, so that the whole gravity center of the rotor main body is positioned on the axis of the corresponding rotating shaft after cooling liquid is filled.
The invention also discloses a vertical vacuum pump, which uses the rotor structure of the vertical claw-type dry vacuum pump, and comprises a pump body, wherein a driving rotating shaft and a driven rotating shaft are rotationally arranged in the pump body, the driving rotating shaft is connected with a power source, the driving rotating shaft and the driven rotating shaft are connected through a transmission mechanism, and the rotor is correspondingly assembled on the driving rotating shaft and the driven rotating shaft; and a communication mechanism for communicating the cooling flow passage and the cooling cavity is arranged between the driving rotating shaft and the driven rotating shaft and the corresponding rotor main body.
Preferably, the communication mechanism comprises a first communication hole arranged on the corresponding rotating shaft and a second communication hole arranged on the rotor main body and corresponding to the first communication hole, wherein a sealing counter bore with the bottom recessed into the surface of the corresponding rotating shaft is arranged on the periphery of the first communication hole, and the sealing counter bore covers the area where the second communication hole is located.
Preferably, the periphery of the sealing counter bore is provided with a sealing boss with a height higher than the surface of the rotating shaft.
Preferably, the number of the cooling flow channels on the same rotating shaft is two, the corresponding rotating shaft adopts a symmetrical arrangement structure, the number of the communication mechanisms corresponds to the number of the cooling flow channels, a cooling liquid circulation loop is formed by the two cooling flow channels and a cooling cavity of the rotor, one cooling flow channel is used as a liquid inlet flow channel, and the other cooling flow channel is used as a liquid outlet flow channel; the pump body sets up the coolant liquid cavity in the tip that corresponds the pivot, set up the conveying mechanism who is used for sending into the coolant liquid in the feed liquor runner in the coolant liquid cavity.
Preferably, the cooling liquid cavity comprises an outer shell body fixed at the position of the pump body close to the end part of the rotating shaft, wherein the inner part of the outer shell body is provided with a baffle plate along the direction vertical to the axis of the rotating shaft, and the outer shell body is divided into a liquid inlet cavity communicated with a liquid inlet channel of the rotating shaft and a liquid outlet cavity communicated with a liquid outlet channel by the baffle plate; the end part of the rotating shaft is provided with a cooling joint penetrating through the cooling liquid cavity and connected with the outer shell and the partition board in a rotating fit manner, and a first channel communicated with the liquid inlet cavity and a second channel communicated with the liquid outlet cavity are arranged in the cooling joint; the liquid inlet cavity is communicated with the cooling liquid conveying pipeline, liquid inlet pressure is generated in the liquid inlet cavity, and cooling liquid is pressed into the liquid inlet flow passage through the first channel.
The invention also provides a using method based on the vertical vacuum pump, which comprises the steps of feeding cooling liquid into two rotating shafts of the vertical vacuum pump, starting a power source, driving the driving rotating shaft to rotate through the power source, driving the driven rotating shaft to rotate through a transmission mechanism with the driving rotating shaft, and arranging rotors on the driving rotating shaft and the driven rotating shaft to rotate along with the corresponding rotating shafts, so as to perform air extraction and compression step by step.
Preferably, the invention selects different cooling liquid supply modes according to the rotating speed of the rotor in the operation of the vertical vacuum pump: dividing the rotating speed of the vertical vacuum pump into a low speed section, a medium speed section and a high speed section according to a rated rotating speed range, supplying cooling liquid at intervals in a low speed state and a medium speed state, controlling the detection and supply time according to the temperature detected by a temperature sensor arranged in the pump body, keeping the cooling liquid in a rotor of the vertical vacuum pump after each new cooling liquid is fed, and completing the replacement of the cooling liquid in the rotor when the new cooling liquid is fed next time; under the high-speed state, the cooling liquid is continuously supplied, the cooling liquid is continuously fed into the first channel to enter the rotating shaft and the rotor, the cooling liquid enters the liquid outlet channel from the cooling cavity of the rotor, and the cooling liquid is discharged from the second channel to continuously cool the rotating shaft and the rotor of the vacuum pump.
The beneficial effects are that: the rotor structure of the vertical claw type dry vacuum pump, the vertical vacuum pump and the use method provided by the invention have the following beneficial effects:
1. the rotor main body is internally provided with the cooling cavity, and the cooling cavity is communicated with the cooling flow channel in the rotating shaft, so that cooling liquid can directly enter the rotor main body to cool the rotor, thereby improving the cooling effect on the rotor, improving the efficiency and keeping the vacuum pump to run for a long time.
2. The cooling cavity adopts a variable cross-section structure, and the dynamic balance is utilized to enable the center of gravity of the rotor main body filled with cooling liquid to be positioned on the axis corresponding to the rotating shaft, so that vibration generated by the operation of the vacuum pump due to eccentricity during high-speed rotation can be reduced, and the running stability of the vacuum pump is improved.
3. According to the invention, the communication mechanism is arranged between the rotating shaft and the rotor for communication, and when the rotating shaft and the rotor are assembled, the first communication hole and the second communication hole can be butted through the sealing counter bore, so that the requirement on the hole opening precision is reduced, the moving dimensional deviation can be compatible, and meanwhile, the fluid pressure at the contact surface can be reduced by utilizing the sealing counter bore, so that the leakage risk is reduced.
4. According to the invention, the sealing boss is arranged on the periphery of the sealing counter bore, and the rotor is provided with the sealing groove matched with the sealing boss, and the depth of the sealing groove is slightly larger than the height of the sealing boss, so that the surface of the rotating shaft and the surface of the rotor can be fully attached after assembly, and the rotor is ensured to be firmly fixed.
5. The cooling flow channels are symmetrically arranged on the corresponding rotating shafts, so that the design difficulty of the rotating shafts can be reduced, the balance of the rotating shafts and the whole rotor in the rotating process is ensured, and the vibration generated by the vertical vacuum pump in the operation process is reduced as much as possible.
6. The cooling liquid cavity adopts an upper-lower layered structure, the cooling liquid cavity is divided into the liquid inlet cavity and the liquid outlet cavity by the arranged partition plates, the cooling joint is fixed at the end part of the rotating shaft, and liquid inlet and liquid outlet are realized by utilizing the liquid pressure in the corresponding cavity, so that the cooling liquid is supplied in the operation process of the driving rotating shaft and the driven rotating shaft, a complex connecting pipeline is not needed, and meanwhile, the supply mode of the cooling liquid can be flexibly adjusted according to the operation condition of the vacuum pump.
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.
FIG. 1 is a schematic view of a vacuum pump rotor installation of the present invention;
FIG. 2 is a schematic view of the internal cooling cavity structure of the rotor of the present invention;
FIG. 3 is a schematic diagram showing the communication between the cooling flow channel of the rotor and the cooling cavity of the rotor;
FIG. 4 is a view showing an internal structure of the vertical vacuum pump of the present invention;
the device comprises a 1-rotor, a 2-rotor main body, a 3-mounting hole, a 4-cooling cavity, a 5-cooling flow passage, a 6-cooling cavity, a 7-pump body, an 8-driving rotating shaft, a 9-driven rotating shaft, a 10-power source, an 11-first communication hole, a 12-second communication hole, a 13-sealing counter bore, a 14-sealing boss, a 15-liquid inlet flow passage, a 16-liquid outlet flow passage, a 17-cooling liquid cavity, a 18-outer shell, a 19-baffle plate, a 20-liquid inlet cavity, a 21-liquid outlet cavity, a 22-cooling joint, a 23-first passage and a 24-second passage.
Description of the embodiments
The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the invention are shown, but in which the invention is not so limited.
As shown in fig. 1 and 2, the rotor structure of the vertical claw-type dry vacuum pump disclosed by the invention comprises a plurality of rotor pairs which are spirally arranged along the axial direction of a rotating shaft, wherein the rotors 1 of the same rotor pair are in conjugate engagement, and when the rotating shaft is driven to rotate, the rotors 1 are used for sucking air and exhausting air step by step to vacuumize; the rotor 1 comprises a rotor main body 2, the rotor main body 2 is provided with a mounting hole 3 matched with a corresponding rotating shaft, a cooling cavity 4 is arranged in the rotor main body 2, the cooling cavity 4 is communicated with a cooling flow passage 5 arranged in the rotating shaft, and the cooling cavity 4 adopts a variable cross-section structure, so that the whole gravity center of the rotor main body 2 is positioned on the axis of the corresponding rotating shaft after cooling liquid is filled.
Through the rotor structure, the cooling liquid can be directly contacted with the rotor to cool, and the heating part is directly cooled, so that the cooling efficiency of the rotor is improved, the vacuum pump can be operated efficiently for a long time, and the vacuumizing effect is ensured.
As shown in fig. 3 and 4, the invention also discloses a vertical vacuum pump, which uses the rotor structure of the vertical claw-type dry vacuum pump, and comprises a pump body 7, wherein a driving rotating shaft 8 and a driven rotating shaft 9 are rotatably arranged in the pump body 7, the driving rotating shaft 8 is connected with a power source 10, the driving rotating shaft 8 and the driven rotating shaft 9 are connected through a transmission mechanism, and a rotor 1 is correspondingly assembled on the driving rotating shaft 8 and the driven rotating shaft 9; a communication mechanism for communicating the cooling flow passage 5 and the cooling cavity 4 is provided between the driving rotation shaft 8 and the driven rotation shaft 9 and the corresponding rotor body 2.
In a specific embodiment, the communication mechanism of the invention comprises a first communication hole 11 arranged on the corresponding rotating shaft and a second communication hole 12 arranged on the rotor main body 2 and corresponding to the first communication hole 11, a sealing counter bore 13 with the bottom recessed on the surface of the corresponding rotating shaft is arranged at the periphery of the first communication hole 11, the sealing counter bore 13 covers the area where the second communication hole 12 is arranged, and preferably, the periphery of the sealing counter bore 13 of the invention is provided with a sealing boss 14 with the height higher than the surface of the rotating shaft.
Through setting up sealed counter bore 13 and covering second intercommunicating pore 12 region, can need not first communication hole 11 and second intercommunicating pore 12 mutually to reduce the demand to the hole positioning accuracy to accomplish the butt joint fast when the assembly, use sealed counter bore 13 as the cooling buffering of coolant liquid simultaneously, can reduce the liquid pressure of interface department, thereby reduce the risk of liquid leakage.
When cooling liquid cools the rotor and the rotating shaft, in order to improve the cooling efficiency, especially when the vacuum pump runs at high speed, the continuous supply and flow of the cooling liquid are required to be kept, the number of the cooling flow channels 5 on the same rotating shaft is two, and a symmetrical arrangement structure is adopted on the corresponding rotating shaft, the number of the communication mechanisms corresponds to the cooling flow channels 5, a cooling liquid circulation loop is formed by the two cooling flow channels 5 and the cooling cavity 4 of the rotor, wherein one cooling flow channel is taken as a liquid inlet flow channel 15, and the other cooling flow channel is taken as a liquid outlet flow channel 16; the pump body 7 is provided with a cooling liquid cavity 17 at the end part corresponding to the rotating shaft, and a conveying mechanism for conveying cooling liquid into the liquid inlet channel 15 is arranged in the cooling liquid cavity 17.
In a specific embodiment, as shown in fig. 4, in order to facilitate the supply of the cooling liquid during the rotation of the rotor, the cooling liquid cavity 17 of the present invention comprises an outer housing 18 fixed to the pump body 7 at a position near the end of the rotation shaft, a partition plate 19 disposed inside the outer housing 18 in a direction perpendicular to the axis of the rotation shaft, and the outer housing 18 is partitioned by the partition plate 19 into a liquid inlet cavity 20 communicating with the liquid inlet channel 15 of the rotation shaft and a liquid outlet cavity 21 communicating with the liquid outlet channel 16; the end part of the rotating shaft is provided with a cooling joint 22 penetrating through the cooling liquid cavity 17 and connected with the outer shell 18 and the partition plate 19 in a rotating fit manner, and a first channel 23 communicated with the liquid inlet cavity 20 and a second channel 24 communicated with the liquid outlet cavity are arranged in the cooling joint 22; the liquid inlet cavity 20 is communicated with a cooling liquid conveying pipeline, liquid inlet pressure is generated in the liquid inlet cavity 20, and cooling liquid is pressed into the liquid inlet flow channel through the first channel 23.
The invention also provides a using method based on the vertical vacuum pump, which comprises the steps of feeding cooling liquid into two rotating shafts of the vertical vacuum pump, starting a power source, driving the driving rotating shaft to rotate through the power source, driving the driven rotating shaft to rotate through a transmission mechanism with the driving rotating shaft, and arranging rotors on the driving rotating shaft and the driven rotating shaft to rotate along with the corresponding rotating shafts, so as to perform air extraction and compression step by step.
In the operation of the vertical vacuum pump, different cooling liquid supply modes are selected according to the rotating speed of the rotor: dividing the rotating speed of the vertical vacuum pump into a low speed section, a medium speed section and a high speed section according to a rated rotating speed range, supplying cooling liquid at intervals in a low speed state and a medium speed state, controlling the detection and supply time according to the temperature detected by a temperature sensor arranged in the pump body, keeping the cooling liquid in a rotor of the vertical vacuum pump after each new cooling liquid is fed, and completing the replacement of the cooling liquid in the rotor when the new cooling liquid is fed next time; under the high-speed state, the cooling liquid is continuously supplied, the cooling liquid is continuously fed into the first channel to enter the rotating shaft and the rotor, the cooling liquid enters the liquid outlet channel from the cooling cavity of the rotor, and the cooling liquid is discharged from the second channel to continuously cool the rotating shaft and the rotor of the vacuum pump.
When the cooling liquid is supplied, the cooling liquid is conveyed into the liquid inlet cavity 20 through the pump, and as the liquid inlet cavity 20 is of a closed structure, when the liquid is continuously fed, the pressure of the liquid inlet cavity is increased, the cooling liquid can be pressed into the liquid inlet channel 15 from the first channel 23 and enters the cooling cavity 4 communicated with the liquid inlet channel, and then enters the liquid outlet channel 16 from the communication position of the cooling cavity 4 and the liquid outlet channel 16 and enters the liquid outlet cavity 21; the control valve can be arranged at the outlet of the liquid outlet cavity 21, and can be opened and closed according to the requirement, when the cooling liquid is required to be temporarily kept in the rotating shaft and the rotor, the control valve can be closed, the liquid pressure of the liquid outlet cavity is utilized for control, so that the control of opening and closing of the flow channel can be realized without influencing the rotation of the rotating shaft, when the cooling liquid is required to be replaced, the control valve and the pump are simultaneously opened, the quantitative cooling liquid is conveyed and then closed again, when the pump is required to be operated at a high speed, the flow rate of the cooling liquid is controlled through the pump, the supply of the cooling liquid is continuously carried out, and the flow rate can be regulated according to the cooling result fed back by the temperature sensor.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (8)
1. The rotor structure of the vertical claw type dry vacuum pump is characterized by comprising a plurality of rotor pairs which are spirally arranged along the axial direction of a rotating shaft, wherein the rotors (1) of the same rotor pair are in conjugate engagement, and when the rotating shaft is driven to rotate, the rotors are used for sucking air and exhausting air step by step to vacuumize; the rotor (1) comprises a rotor main body (2), wherein the rotor main body (2) is provided with a mounting hole (3) matched with a corresponding rotating shaft, a cooling cavity (4) is formed in the rotor main body (2), the cooling cavity (4) is communicated with a cooling flow passage (5) arranged in the rotating shaft, and the cooling cavity (4) adopts a variable cross-section structure, so that the integral gravity center of the rotor main body (2) is positioned on the axis corresponding to the rotating shaft after cooling liquid is filled.
2. A vertical vacuum pump, characterized by using the vertical claw type dry vacuum pump rotor structure of claim 1, comprising a pump body (7), wherein a driving rotating shaft (8) and a driven rotating shaft (9) are rotationally arranged in the pump body (7), the driving rotating shaft (8) is connected with a power source (10), the driving rotating shaft (8) and the driven rotating shaft (9) are connected through a transmission mechanism, and a rotor (1) is correspondingly assembled on the driving rotating shaft (8) and the driven rotating shaft (9); a communication mechanism for communicating the cooling flow channel (5) and the cooling cavity (4) is arranged between the driving rotating shaft (8) and the driven rotating shaft (9) and the corresponding rotor main body (2).
3. A vertical vacuum pump according to claim 2, wherein the communication mechanism comprises a first communication hole (11) arranged on the corresponding rotating shaft and a second communication hole (12) arranged on the rotor main body (2) and corresponding to the first communication hole (11), sealing counter bores (13) with bottoms recessed into the surface of the corresponding rotating shaft are arranged on the periphery of the first communication hole (11), and the sealing counter bores (13) cover the area where the second communication holes (12) are located.
4. A vertical vacuum pump according to claim 3, characterized in that the sealing counter bore (13) is provided at its periphery with a sealing boss (14) having a height higher than the surface of the spindle.
5. A vertical vacuum pump according to claim 3, characterized in that the number of cooling channels (5) on the same rotating shaft is two, and a symmetrical arrangement structure is adopted on the corresponding rotating shaft, the number of the communication mechanisms corresponds to the number of the cooling channels (5), a cooling liquid circulation loop is formed by the two cooling channels (5) and the cooling cavity (4) of the rotor, wherein one cooling channel is used as a liquid inlet channel (15), and the other cooling channel is used as a liquid outlet channel (16); the pump body (7) is provided with a cooling liquid cavity (17) at the end part corresponding to the rotating shaft, and a conveying mechanism for conveying cooling liquid into the liquid inlet flow channel (15) is arranged in the cooling liquid cavity (17).
6. A vertical vacuum pump according to claim 5, characterized in that the cooling liquid cavity (17) comprises an outer shell (18) fixed at the position of the pump body (7) close to the end part of the rotating shaft, a partition plate (19) is arranged inside the outer shell (18) along the direction perpendicular to the axis of the rotating shaft, and the outer shell (18) is divided into a liquid inlet cavity (20) communicated with the liquid inlet channel (15) of the rotating shaft and a liquid outlet cavity (21) communicated with the liquid outlet channel (16) by the partition plate (19); the end part of the rotating shaft is provided with a cooling joint (22) which is penetrated in the cooling liquid cavity (17) and connected with the outer shell (18) and the partition plate (19) in a rotating fit way, and a first channel (23) communicated with the liquid inlet cavity (20) and a second channel (24) communicated with the liquid outlet cavity are arranged in the cooling joint (22); the liquid inlet cavity (20) is communicated with the cooling liquid conveying pipeline, liquid inlet pressure is generated in the liquid inlet cavity (20), and cooling liquid is pressed into the liquid inlet flow passage through the first passage (23).
7. A method of using a vertical vacuum pump according to any one of claims 2 to 6, wherein a cooling liquid is fed into two shafts of the vertical vacuum pump, a power source is started, the driving shaft is driven to rotate by the power source, the driven shaft is driven to rotate by the driving shaft through a transmission mechanism, and rotors mounted on the driving shaft and the driven shaft rotate along with the corresponding shafts, so that air extraction and compression are performed step by step.
8. The method of claim 7, wherein the different cooling liquid supply modes are selected according to the rotation speed of the rotor during operation of the vertical vacuum pump: dividing the rotating speed of the vertical vacuum pump into a low speed section, a medium speed section and a high speed section according to a rated rotating speed range, supplying cooling liquid at intervals in a low speed state and a medium speed state, controlling the detection and supply time according to the temperature detected by a temperature sensor arranged in the pump body, keeping the cooling liquid in a rotor of the vertical vacuum pump after each new cooling liquid is fed, and completing the replacement of the cooling liquid in the rotor when the new cooling liquid is fed next time; under the high-speed state, the cooling liquid is continuously supplied, the cooling liquid is continuously fed into the first channel to enter the rotating shaft and the rotor, the cooling liquid enters the liquid outlet channel from the cooling cavity of the rotor, and the cooling liquid is discharged from the second channel to continuously cool the rotating shaft and the rotor of the vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311736548.8A CN117514806A (en) | 2023-12-18 | 2023-12-18 | Rotor structure of vertical claw type dry vacuum pump, vertical vacuum pump and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311736548.8A CN117514806A (en) | 2023-12-18 | 2023-12-18 | Rotor structure of vertical claw type dry vacuum pump, vertical vacuum pump and use method |
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| Publication Number | Publication Date |
|---|---|
| CN117514806A true CN117514806A (en) | 2024-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311736548.8A Pending CN117514806A (en) | 2023-12-18 | 2023-12-18 | Rotor structure of vertical claw type dry vacuum pump, vertical vacuum pump and use method |
Country Status (1)
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|---|---|
| CN (1) | CN117514806A (en) |
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| CN106014995A (en) * | 2016-07-08 | 2016-10-12 | 江阴华西节能技术有限公司 | Multi-stage dry Roots vacuum pump |
| CN208734539U (en) * | 2018-08-28 | 2019-04-12 | 中北大学 | Spiral jaw rotor and vacuum pump with spiral jaw rotor |
| CN110005608A (en) * | 2019-05-16 | 2019-07-12 | 山东泽一真空设备有限公司 | Claw type vacuum pump |
| CN113039703A (en) * | 2018-11-28 | 2021-06-25 | 罗伯特·博世有限公司 | Rotor of electric machine |
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2023
- 2023-12-18 CN CN202311736548.8A patent/CN117514806A/en active Pending
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