CN113137367B - Screw vacuum pump with rotor cooling function - Google Patents
Screw vacuum pump with rotor cooling function Download PDFInfo
- Publication number
- CN113137367B CN113137367B CN202110503663.5A CN202110503663A CN113137367B CN 113137367 B CN113137367 B CN 113137367B CN 202110503663 A CN202110503663 A CN 202110503663A CN 113137367 B CN113137367 B CN 113137367B
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- China
- Prior art keywords
- rotor
- air
- cooling
- vacuum pump
- guide
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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
- F04C18/10—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 internal-axis type with the outer member having more teeth or tooth equivalents, e.g. rollers, than the inner member
- F04C18/107—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 internal-axis type with the outer member having more teeth or tooth equivalents, e.g. rollers, than the inner member with helical teeth
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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
- F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
- F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
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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
- F04C29/04—Heating; Cooling; Heat insulation
Abstract
The invention discloses a screw vacuum pump with a rotor cooling function, which structurally comprises a pump body, wherein a rotatable screw rod is arranged in the pump body and comprises a rotor and screw blades spirally arranged on the rotor, two ends of the rotor are rotatably arranged in the pump body, cooling cavities are arranged at the joints of the screw blades and the rotor, a plurality of air ducts are transversely distributed on the surface of the rotor and are communicated with the inside of the cooling cavities one by one, the inside of the rotor is hollow, the cooling cavities are communicated with the inside of the rotor, the end parts of the air ducts extend to the outside of the pump body one by one, and air guide pieces are arranged at the end parts of the air ducts.
Description
Technical field:
the invention relates to the technical field of vacuum pump production, in particular to a screw vacuum pump with a rotor cooling function.
The background technology is as follows:
when the screw vacuum pump normally operates, the gas at the exhaust port of the pump flows back into the pump cavity to do work, the temperature of the gas in the pump cavity is increased, so that the temperature of the pump body and the rotor of the screw pump is increased, in the screw vacuum pump, the rotor is arranged in the pump cavity and rotates at a high speed to do work, and in the prior art, the cooling is performed outside the pump without direct contact with the rotor, so that the cooling effect is not good, external energy is required to be consumed in the cooling mode, and the consumption of the screw vacuum pump to the energy is increased.
The invention comprises the following steps:
the present invention aims to provide a screw vacuum pump with a rotor cooling function, solving one or more of the above-mentioned prior art problems.
In order to solve the technical problems, the invention provides a screw vacuum pump with a rotor cooling function, which structurally comprises a pump body, wherein a rotatable screw rod is arranged in the pump body, and the innovation point is that: the screw rod comprises a rotor and screw blades spirally arranged on the rotor, two ends of the rotor are rotatably arranged in the pump body, the joint of the screw blades and the rotor is provided with a cooling cavity, a plurality of air ducts are transversely distributed on the surface of the rotor, and the air ducts are communicated in the cooling cavity one by one;
the inside of rotor is cavity, is linked together between cooling cavity and the inside of rotor, and the tip one-to-one of air duct extends in the outside of the pump body, and the tip of air duct all is equipped with the air guide spare.
Further, the cooling cavity is an elliptical cavity, the plurality of cooling cavities obliquely encircle the outer side of the rotor, an annular groove is formed in the center of the round surface of the cooling cavity, and a flow guide piece is arranged in the annular groove.
Further, the guide piece comprises a rotating rod rotatably arranged in the annular groove and a plurality of inclined plates arranged on the rotating rod, and the inclined direction of the inclined plates is consistent with the extending direction of the spiral blades.
Further, the inclined plate is semi-arc, and two ends of the inclined plate are fixed on the rotating rod.
Further, two ends of the rotor are respectively provided with a rotatable support bearing, and the outer sides of the support bearings are sleeved with a protective shell;
the end part of the air duct penetrates through the supporting bearing one by one and extends into the protective shell, a plurality of air inlets are formed in the protective shell, the air guide piece is located in the protective shell and faces the air inlets, and when the rotor drives the air guide piece to rotate, centrifugal air inlet vortexes are formed in the protective shell.
Further, the air guide piece comprises a plurality of guide rods which are arranged at the end parts of the air guide pipe in a forked mode and guide vanes which are arranged on the guide rods, the plurality of air inlets are distributed on the protective shell in a circular mode, and the extending directions of the guide rods face the air inlets.
Further, the movable plate is arranged on the protective shell, the end parts of the movable plate and the air duct are arranged oppositely, and the movable direction of the movable plate is close to or far away from the air duct.
The invention has the beneficial effects that:
1. the invention provides a screw vacuum pump with a rotor cooling function, when a rotor drives a spiral blade to rotate, a cooling cavity and an air guide pipe rotate along with the rotor, the end part of the air guide pipe guides external air into the air guide pipe under the action of an air guide piece, and the external air enters the cooling cavity and gradually enters the interior of the rotor, so that the ventilation and heat dissipation functions of the interior of the rotor are realized.
2. The invention provides a screw vacuum pump with a rotor cooling function, wherein ventilation and heat dissipation in the rotor are realized by means of rotation of the rotor, and the self-cooling function can be realized without providing other energy sources by means of the outside, so that the energy consumption is reduced.
3. The invention provides a screw vacuum pump with a rotor cooling function, wherein an elliptical cavity accords with a streamline design in the process of rotating a cooling cavity along with a rotor, so that the resistance of the rotor in rotation is reduced, and secondly, air flow formed by rotating a spiral blade enters an annular groove and is combed by air flow of a flow guide piece, so that the resistance of the rotor and the spiral blade in integral rotation is further reduced.
Description of the drawings:
FIG. 1 is a cross-sectional view of a front structure of the present invention.
Fig. 2 is a side structural cross-sectional view of the screw rod of the present invention.
FIG. 3 is a cross-sectional view of the interior of the cooling chamber of the present invention.
Fig. 4 is a front cross-sectional view of the protective housing of the present invention.
The specific embodiment is as follows:
the present invention will be further described in detail with reference to the following examples and drawings for the purpose of enhancing the understanding of the present invention, which examples are provided for the purpose of illustrating the present invention only and are not to be construed as limiting the scope of the present invention.
As shown in fig. 1 to 2, in one embodiment of the present invention, the structure of the present invention includes a pump body 101, a rotatable screw rod 1 is provided in the pump body 101, the screw rod 1 includes a rotor 11 and screw blades 12 spirally provided on the rotor 11, two ends of the rotor 11 are rotatably provided in the pump body 101, a cooling cavity 2 is provided at a joint between the screw blades 12 and the rotor 11, a plurality of air ducts 3 are transversely distributed on a surface of the rotor 11, and the air ducts 3 are communicated in the cooling cavity 2 one by one;
the inside of rotor 11 is hollow, is linked together between cooling cavity 2 and the inside of rotor 11, and the tip one-to-one of air duct 3 extends in the outside of pump body 101, and the tip of air duct 3 all is equipped with air guide 4.
In the invention, when the rotor 11 drives the spiral blade 12 to rotate, the cooling cavity 2 and the air guide pipe 3 rotate along with the rotation, the end part of the air guide pipe 3 guides external air into the air guide pipe 3 under the action of the air guide piece 4, and the external air enters the cooling cavity 2 and gradually enters the rotor 11 to realize the ventilation and heat dissipation functions of the rotor 11.
In the invention, ventilation and heat dissipation inside the rotor 11 are realized by the rotation of the rotor 11, and the self-cooling function can be realized without providing other energy sources by the outside, thereby reducing the energy consumption.
In the present invention, as a preferable mode, the specific structure of the cooling chamber 2 is as follows: the cooling cavity 2 is an elliptic cavity, a plurality of cooling cavities 2 obliquely encircle the outer side of the rotor 11, an annular groove 21 is arranged in the center of the round surface of the cooling cavity 2, and a flow guide piece 5 is arranged in the annular groove 21.
In the invention, in the process that the cooling cavity 2 rotates along with the rotor 11, the elliptic cavity accords with streamline design, so that the resistance of the rotor 11 during rotation is reduced, and secondly, the air flow formed during rotation of the spiral blade 12 enters the annular groove 21 and is combed by the air flow of the guide piece 5, so that the resistance of the rotor 11 and the spiral blade 12 during integral rotation is further reduced.
In the present invention, the specific structure of the deflector 5 is that the deflector 5 includes a rotating rod 51 rotatably disposed in the annular groove 21 and a plurality of inclined plates 52 disposed on the rotating rod 51, and the inclined direction of the inclined plates 52 is identical to the extending direction of the spiral vane 12.
In the present invention, the air flow generated when the spiral vane 12 rotates acts on the inclined plate 52, so that the inclined plate 52 rotates in the annular groove 21, thereby acting to split the air flow resistance, and further reducing the resistance when the rotor 11 and the spiral vane 12 integrally rotate.
In the present invention, the inclined plate 52 is semi-arc, two ends of the inclined plate 52 are fixed on the rotating rod 51, the arc inclined plate 52 is beneficial to the rotation of the inclined plate 52, so that the action of air flow resistance can be better shared.
In the present invention, as a preferable embodiment, the specific structure of the end portion of the air duct 3 is as follows: both ends of the rotor 11 are provided with rotatable support bearings 111, and the outer sides of the support bearings 111 are sleeved with protective shells 6;
the end of the air duct 3 penetrates through the support bearing 111 one by one and extends into the protective housing 6, the protective housing 6 is provided with a plurality of air inlets 61, the air guide 4 is located in the protective housing 6 and faces the air inlets 61, and when the rotor 11 drives the air guide 4 to rotate, a centrifugal air inlet vortex is formed in the protective housing 6.
In the present invention, the rotation of the air duct 3 extends inside the protective case 6, and the air guide 4 forms an air intake vortex inside the protective case, so that the external air flow is sucked into the protective case 6 through the plurality of air inlets 61, and then into the interior of the duct, thereby realizing the self-cooling function of the rotor 11.
In the present invention, as a preferable embodiment, the specific structure of the air guide 4 is as follows: the air guide member 4 includes a plurality of guide rods 41 arranged at the end of the air guide tube 3 in a bifurcated manner, and guide vanes 42 arranged on the guide rods 41, and a plurality of air inlets 61 are circularly distributed on the protective shell 6, and the extending directions of the guide rods 41 face the air inlets 61.
In the present invention, when the air duct 3 rotates, it drives the plurality of guide rods 41 to rotate inside the protective case 6, and the air inlet vortex is formed at the center of the guide rods 41 by the agitation of the guide vanes 42, so that the external air flow can be sucked into the inside of the protective case 6 through the air inlet 61.
In the present invention, as a preferred solution, the protective housing 6 is provided with a movable plate 62, the movable plate 62 and the end portion of the air duct 3 are disposed opposite to each other, the movable direction of the movable plate 62 is close to or far away from the air duct 3, during the high-speed rotation of the air duct 3, the air intake vortex generated by the air guide 4 can generate a larger suction force in the protective housing 6, and the suction force synchronously acts on the movable plate 62, so that the movable plate 62 elastically moves towards the air duct 3, thereby facilitating the compression of the air flow in the protective housing 6 towards the direction of the air duct 3.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a screw vacuum pump with rotor cooling function, its structure includes the pump body (101), the inside of pump body (101) is equipped with rotatable hob (1), its characterized in that: the screw rod (1) comprises a rotor (11) and screw blades (12) which are spirally arranged on the rotor (11), two ends of the rotor (11) are rotatably arranged in the pump body (101), cooling cavities (2) are arranged at the joints of the screw blades (12) and the rotor (11), a plurality of air ducts (3) are transversely distributed on the surface of the rotor (11), and the air ducts (3) are communicated with the inside of the cooling cavities (2) one by one;
the inside of the rotor (11) is hollow, the cooling cavity (2) is communicated with the inside of the rotor (11), the end parts of the air guide pipes (3) extend to the outer side of the pump body (101) one by one, and the end parts of the air guide pipes (3) are provided with air guide pieces (4);
the cooling cavities (2) are elliptical cavities, a plurality of the cooling cavities (2) obliquely encircle the outer side of the rotor (11), annular grooves (21) are formed in the center of the round surface of each cooling cavity (2), and flow guide pieces (5) are arranged in the annular grooves (21);
both ends of the rotor (11) are provided with rotatable support bearings (111), and the outer sides of the support bearings (111) are sleeved with protective shells (6);
the tip of air duct (3) runs through one by one support bearing (111) and extend the inside of protective housing (6), be equipped with a plurality of air inlets (61) on protective housing (6), air guide (4) are located the inside of protective housing (6) and openly face air inlet (61), rotor (11) drive when air guide (4) rotate, the inside of protective housing (6) is formed with centrifugal air inlet swirl.
2. A screw vacuum pump with rotor cooling function as claimed in claim 1, wherein: the guide piece (5) comprises a rotating rod (51) rotatably arranged in the annular groove (21) and a plurality of inclined plates (52) arranged on the rotating rod (51), and the inclined direction of the inclined plates (52) is consistent with the extending direction of the spiral blades (12).
3. A screw vacuum pump with rotor cooling function according to claim 2, characterized in that: the inclined plate (52) is semi-arc-shaped, and two ends of the inclined plate (52) are fixed on the rotating rod (51).
4. A screw vacuum pump with rotor cooling function as claimed in claim 1, wherein: the air guide piece (4) comprises a plurality of guide rods (41) which are arranged at the end parts of the air guide pipes (3) in a forked mode and guide vanes (42) which are arranged on the guide rods (41), a plurality of air inlets (61) are distributed on the protective shell (6) in a round mode, and the extending directions of the guide rods (41) face the air inlets (61).
5. A screw vacuum pump with rotor cooling function as claimed in claim 4, wherein: the movable plate (62) is arranged on the protective shell (6), the movable plate (62) and the end part of the air duct (3) are arranged oppositely, and the moving direction of the movable plate (62) is close to or far away from the air duct (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110503663.5A CN113137367B (en) | 2021-05-10 | 2021-05-10 | Screw vacuum pump with rotor cooling function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110503663.5A CN113137367B (en) | 2021-05-10 | 2021-05-10 | Screw vacuum pump with rotor cooling function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113137367A CN113137367A (en) | 2021-07-20 |
| CN113137367B true CN113137367B (en) | 2023-04-25 |
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ID=76817829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110503663.5A Active CN113137367B (en) | 2021-05-10 | 2021-05-10 | Screw vacuum pump with rotor cooling function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113137367B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738280B (en) * | 2022-04-10 | 2024-04-09 | 江苏天丰真空泵有限公司 | Oilless screw vacuum pump with cooling device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19745616A1 (en) * | 1997-10-10 | 1999-04-15 | Leybold Vakuum Gmbh | Cooling system for helical vacuum pump |
| JP5328322B2 (en) * | 2008-12-02 | 2013-10-30 | 株式会社荏原製作所 | Air-cooled dry vacuum pump |
| CN202203118U (en) * | 2011-09-09 | 2012-04-25 | 汉钟精机股份有限公司 | Vacuum pump rotor cooling structure |
| CN210599428U (en) * | 2019-09-21 | 2020-05-22 | 绍兴众辉机电设备有限公司 | Screw rod host for compressor |
| CN210977868U (en) * | 2019-11-13 | 2020-07-10 | 海门市晶盛真空设备有限公司 | Cooling device of spiral vacuum pump |
| CN111668993B (en) * | 2020-06-24 | 2021-07-02 | 浙江江宇电机有限公司 | Heat dissipation type motor |
-
2021
- 2021-05-10 CN CN202110503663.5A patent/CN113137367B/en active Active
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| Publication number | Publication date |
|---|---|
| CN113137367A (en) | 2021-07-20 |
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| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 226500 No. 1, Helu Road, Chengbei street, Rugao City, Nantong City, Jiangsu Province Applicant after: NANTONG BEIKE VACUUM MACHINERY Co.,Ltd. Address before: 226500 room a, 1st floor, building 1, science and Technology Pioneer Park, No.20 Huashi North Road, Chengbei street, Rugao City, Nantong City, Jiangsu Province Applicant before: NANTONG BEIKE VACUUM MACHINERY Co.,Ltd. |
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| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |