CN111425397A - Claw type screw rotor structure and screw vacuum pump - Google Patents

Claw type screw rotor structure and screw vacuum pump Download PDF

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Publication number
CN111425397A
CN111425397A CN202010388962.4A CN202010388962A CN111425397A CN 111425397 A CN111425397 A CN 111425397A CN 202010388962 A CN202010388962 A CN 202010388962A CN 111425397 A CN111425397 A CN 111425397A
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CN
China
Prior art keywords
rotor
driven
claw
driving
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010388962.4A
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Chinese (zh)
Inventor
郑志
陈宗武
郭金光
张东庆
辛玲玲
王仕生
尚蕾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bozhong Shandong Industrial Equipment Co Ltd
Original Assignee
Shandong Bozhong Vacuum Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong Bozhong Vacuum Technology Co ltd filed Critical Shandong Bozhong Vacuum Technology Co ltd
Priority to CN202010388962.4A priority Critical patent/CN111425397A/en
Publication of CN111425397A publication Critical patent/CN111425397A/en
Pending legal-status Critical Current

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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
    • 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
    • F04C18/082—Details specially related to intermeshing engagement type pumps
    • F04C18/084—Toothed wheels
    • 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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

The invention discloses a claw-type screw rotor structure and a screw vacuum pump, which comprise two mutually adjacent rotors, wherein the adjacent rotors drive gas to directionally flow through meshing; the rotor has a rotor shaft, and a plurality of rotor sheets mounted on the rotor shaft; a plurality of the rotor sheets are sequentially assembled on the rotor shaft; the rotor sheet is formed with an engagement claw structure extending away from the rotor shaft; the difference of the circumferential angles of the adjacent rotor sheets of the same rotor is theta, and the rotor sheets of the adjacent rotors are sequentially meshed to drive the gas to flow directionally. The rotor structure of the invention adopts a plurality of rotor sheets which are mutually stacked, can be processed and molded by using general equipment, has high processing precision of the rotor sheets with sheet structures, has no limitation of processing equipment and processing capacity on the diameter of the rotor, obviously reduces the processing difficulty of large-scale screw rods, and makes the production and the manufacture of large-scale screw vacuum pumps possible.

Description

Claw type screw rotor structure and screw vacuum pump
Technical Field
The invention relates to the technical field of screw vacuum pumps, in particular to a claw-type screw rotor structure and a screw vacuum pump.
Background
Compared with other types of vacuum pumps, the screw vacuum pump is a dry type multi-stage vacuum pump, does not pollute a vacuum system in the working process, is low-carbon and environment-friendly, can keep higher pumping speed in a wider pressure range, has short gas channel in the pump, is easy to carry out antiseptic treatment, has wide application range, and is widely applied in various fields.
At present, the pumping rate of domestic external screw vacuum pumps is below 200L/s and is mainly limited by the processing capacity of the screws, so that the large-scale screw vacuum pump cannot be manufactured, popularized and applied.
Disclosure of Invention
The invention aims to provide a claw type screw rotor structure and a screw vacuum pump which are suitable for a large screw vacuum pump and can be machined and manufactured on general equipment.
In order to achieve the above purpose, the invention provides the following technical scheme:
the claw type screw rotor structure of the invention comprises:
two rotors adjacent to each other;
the adjacent rotors drive the gas to directionally flow through meshing;
the rotor has a rotor shaft, and a plurality of rotor sheets mounted on the rotor shaft;
a plurality of the rotor sheets are sequentially assembled on the rotor shaft;
the rotor sheet is formed with an engagement claw structure extending away from the rotor shaft;
the circumferential angle difference of adjacent rotor sheets of the same rotor is theta;
Figure BDA0002484995180000021
wherein b is the thickness of the rotor sheet;
p is the rotor pitch;
the rotor sheets of adjacent rotors are sequentially meshed to drive the directional flow of gas.
Further, adjacent rotors are respectively configured as a driving rotor and a driven rotor;
the drive rotor has a plurality of drive rotor segments mounted on a drive rotor shaft;
the driven rotor has a plurality of driven rotor segments mounted on a driven rotor shaft;
the driving rotor sheets of the driving rotor are sequentially meshed with the driven rotor sheets of the driven rotor to drive the gas to flow directionally;
the driving rotor and the driven rotor are driven by a synchronous gear to form synchronous rotation;
the rotation direction of the driving rotor is opposite to that of the driven rotor.
Further, the active rotor sheet includes:
the driving rotor assembly comprises a driving rotor assembly body and a driving rotor meshing claw which protrudes out of the driving rotor assembly body and extends along an arc-shaped track;
the driving rotor assembly body is provided with a first shaft hole;
the driving rotor plate is assembled to the driving rotor shaft through the first shaft hole;
the driven rotor sheet includes:
the driven rotor assembly comprises a driven rotor assembly body and a driven rotor meshing claw which protrudes out of the driven rotor assembly body and extends along an arc-shaped track;
the driven rotor assembly has a second shaft bore;
the driven rotor piece is assembled to the driven rotor shaft through the second shaft hole;
the extension direction of the arc-shaped track of the driving rotor meshing claw is opposite to that of the arc-shaped track of the driven rotor meshing claw, and the driving rotor meshing claw is meshed with the driven rotor meshing claw to drive gas to flow directionally;
further, the arc-shaped surface of the driving rotor engagement claw is configured as a driving rotor profile surface, and the end of the driving rotor engagement claw far away from one end of the driving rotor assembly is configured as a driving rotor front claw;
the arc-shaped surface of the driven rotor engagement claw is configured as a driven rotor profile surface, and the end part of the driven rotor engagement claw, which is far away from one end of the driven rotor assembly, is configured as a driven rotor rear claw;
the extension directions of the driving rotor profile surface and the driven rotor profile surface are opposite;
the front claw of the driving rotor is meshed and moves along the profile surface of the driven rotor to form a first sealing pair;
the driven rotor rear claw is meshed with and moves along the profile surface of the driving rotor to form a second sealing pair;
the formation and movement of the first sealing pair and the second sealing pair are used for driving the gas to flow directionally.
Furthermore, the meshing claws of each rotor sheet on the same rotor shaft are arranged along a spiral line, and after the rotor sheets are stacked, the meshing claws of the rotor sheets form a spiral rotor structure.
The invention discloses a screw vacuum pump which comprises a pump body, wherein the claw-type screw rotor structure is integrated in the pump body.
Further, the pump body comprises a first pump body and a second pump body which are of an integrated structure;
the first pump body is provided with a first rotor cavity;
the second pump body is provided with a second rotor cavity;
the first rotor cavity and the second rotor cavity are communicated and partially overlapped;
the driving rotor is embedded in the first rotor cavity;
the driven rotor is embedded in the second rotor cavity.
In the technical scheme, the claw-type screw rotor structure and the screw vacuum pump with the claw-type screw rotor structure have the following beneficial effects:
the rotor structure of the invention adopts a plurality of rotor sheets which are mutually stacked, can be processed and molded by using general equipment, has high processing precision of the rotor sheets with sheet structures, has no limitation of processing equipment and processing capacity on the diameter of the rotor, obviously reduces the processing difficulty of large-scale screw rods, and makes the production and the manufacture of large-scale screw vacuum pumps possible.
The rotor structure and the screw vacuum pump with the rotor structure can meet the requirements of different operation working conditions, so that the design and adjustment of the vacuum pump are easier and more flexible, and the applicability of the screw vacuum pump is obviously improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1 is a schematic structural diagram of a claw screw rotor structure according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a driving rotor of a claw screw rotor structure according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a driving rotor plate of a claw screw rotor structure according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a driven rotor of the claw screw rotor structure provided by the embodiment of the invention;
FIG. 5 is a schematic structural diagram of a driven rotor plate of a claw screw rotor structure according to an embodiment of the present invention;
FIG. 6 is a schematic view of rotor profiles of a claw screw rotor structure according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a screw vacuum pump having a claw screw rotor structure according to an embodiment of the present invention.
Description of reference numerals:
1. a driving rotor; 2. a driven rotor; 3. a pump body;
10. a rotor structure;
101. a driving rotor shaft; 102. an active rotor plate;
10201. a drive rotor assembly; 10202. a drive rotor profile; 10203. a front claw of the driving rotor; 10204. a first shaft hole;
201. a driven rotor shaft; 202. a driven rotor plate;
20201. a driven rotor assembly; 20202. a driven rotor profile; 20203. a driven rotor rear jaw; 20204. a second shaft hole;
301. a first rotor cavity; 302. a second rotor chamber.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
The first embodiment is as follows:
the first embodiment of the present application discloses a novel screw rotor structure 10;
as shown in fig. 1 to 6;
the claw screw rotor structure 10 of the present invention, the rotor structure 10 includes:
two rotors adjacent to each other;
the adjacent rotors drive the gas to flow directionally through meshing;
the rotor has a rotor shaft and a plurality of rotor sheets assembled on the rotor shaft;
the plurality of rotor sheets are sequentially assembled on the rotor shaft;
the rotor sheet is formed with a meshing claw structure extending away from the rotor shaft;
the circumferential angle difference of adjacent rotor sheets of the same rotor is theta;
Figure BDA0002484995180000051
wherein b is the thickness of the rotor sheet;
p is the rotor pitch;
the rotor sheets of adjacent rotors mesh in sequence to drive the directional flow of gas.
Specifically, the novel claw screw rotor structure disclosed in this embodiment includes two rotors configured to mesh with each other to drive a directional flow of gas. The rotor is a unit body of the rotor, and a meshing claw structure extends from the rotor, and when the rotor rotates, gas is driven to flow directionally through meshing of the meshing claw structure; and this embodiment one uses a plurality of rotor pieces as the cell cube, and this rotor piece can be through general equipment machine-shaping, according to the operating condition requirement, processes the rotor piece, and its thickness, the extension orbit of meshing claw structure all can suitably be adjusted, just so can satisfy the processing requirement of large-scale screw vacuum pump rotor.
As a modified structure of the present embodiment:
for a variable-pitch screw, the circumferential angle difference theta i between two adjacent rotor sheets is determined according to the pitch of the position of the rotor sheets, and the size of theta i is as follows:
Figure BDA0002484995180000052
wherein bi is the thickness of the rotor sheet at the position;
pi is the rotor pitch at the position;
preferably, the adjacent rotors of the first embodiment are respectively configured as a driving rotor 1 and a driven rotor 2;
the drive rotor 1 has a plurality of drive rotor segments 102 fitted on a drive rotor shaft 101;
the driven rotor 2 has a plurality of driven rotor pieces 202 fitted on a driven rotor shaft 201;
the driving rotor sheets 102 of the driving rotor 1 are sequentially meshed with the driven rotor sheets 202 of the driven rotor 2 to drive the gas to flow directionally;
the driving rotor 1 rotates in the opposite direction to the driven rotor 2.
When the two rotors are used as the constituent units of the rotor structure 10, the two rotors are the driving rotor 1 and the driven rotor 2, and the driving rotor 1 and the driven rotor 2 in the first embodiment have the same structure during processing, so that the arc-shaped structures of the driving rotor sheet 102 and the driven rotor sheet 202 need to extend in opposite directions in order to ensure that the driving rotor 1 can drive the driven rotor 2 to rotate, and thus the rotation directions of the two rotors are opposite.
Specifically, the method comprises the following steps:
the driving rotor sheet 102 includes:
a drive rotor assembly 10201, and a drive rotor engagement claw projecting from the drive rotor assembly 10201 and extending along an arcuate path;
the drive rotor assembly has a first shaft bore 10204;
the driving rotor sheet 102 is assembled to the driving rotor shaft 101 through the first shaft hole 10204;
the driven rotor sheet 202 includes:
a driven rotor assembly 20201, and a driven rotor engaging claw projecting from the driven rotor assembly 20201 and extending along an arc-shaped trajectory;
the driven rotor assembly has a second shaft bore 20204;
the driven rotor plate 202 is fitted to the driven rotor shaft 201 through the second shaft hole 20204;
the extension direction of the arc-shaped track of the driving rotor meshing claw is opposite to that of the arc-shaped track of the driven rotor meshing claw, and the driving rotor meshing claw is meshed with the driven rotor meshing claw to drive gas to flow directionally.
This embodiment mainly describes the mounting structure of the rotor pieces, and the structure of the engaging claws formed on the corresponding rotor pieces, and the above-described engaging claws of the driving rotor and the engaging claws of the driven rotor.
Wherein, the arc surface of the driving rotor transmission body is configured as a driving rotor profile surface 10202, and the end of the driving rotor transmission body far away from the driving rotor assembly 10201 is configured as a driving rotor front claw 10203;
the arc-shaped surface of the driven rotor transmission body is configured as a driven rotor profile surface 20202, and the end of the driven rotor transmission body, which is far away from one end of the driven rotor assembly 20201, is configured as a driven rotor rear claw 20203;
the driving rotor profile 10202 and the driven rotor profile 20202 extend in opposite directions;
the driving rotor front claw 10203 is meshed and moves along the driven rotor profile surface 20202 to form a first sealing pair;
the driven rotor rear claw 20203 is meshed with and moves along the driving rotor profile surface 10202 to form a second sealing pair;
the formation and movement of the first sealing pair and the second sealing pair are used for driving the gas to flow directionally.
Based on the above structural limitation, the engaging claws of each rotor plate on the same rotor shaft in this embodiment are arranged along a spiral line, and after the rotor plates are stacked, the engaging claws of the rotor plates form a spiral rotor structure.
According to the design requirements of the driving rotor 1 and the driven rotor 2, the arc-shaped surface of the rotor meshing claw in the embodiment is the profile of the rotor, the spirally extending track of the rotor meshing claw can be changed according to the actual working condition, the number and the thickness of the driving rotor sheets 102 determine the screw pitch, and the screw pitch can be properly adjusted according to the actual working condition, so that the rotor structure 10 has certain universality and can be processed and formed through general equipment, during meshing transmission, the driven rotor sheets 202 and the driving rotor sheets 102 synchronously rotate to drive gas to qualitatively flow, the driving rotor front claw 10203 is meshed with the driven rotor profile 20202, the driven rotor rear claw 03 is meshed with the driving rotor profile 10202, and the driving rotor 1 and the driven rotor 2 are driven by synchronous gears to realize synchronous rotation.
Example two:
as shown in fig. 7;
the second embodiment discloses a screw vacuum pump integrated with the rotor structure 10 disclosed in the first embodiment.
Specifically, the method comprises the following steps:
the invention discloses a screw vacuum pump which comprises a pump body 3, wherein a claw-type screw rotor structure 10 is integrated in the pump body 3.
The pump body 3 in the second embodiment includes a first pump body and a second pump body which are of an integrated structure;
the first pump body is formed with a first rotor cavity 301;
the second pump body is formed with a second rotor cavity 302;
the first rotor cavity 301 and the second rotor cavity 302 are communicated and partially overlapped;
the driving rotor 1 is embedded in the first rotor cavity 301;
the driven rotor 2 is fitted into the second rotor chamber 302.
Based on the structural features of the rotor structure 10 in the first embodiment, the pump body 3 of the present embodiment needs to have two rotor cavities, and the opening size of the rotor cavity needs to ensure that the rotor can freely rotate therein.
Example three:
in principle, the specific process dimensions of the rotor structure 10 and the screw vacuum pump disclosed in the present application can be appropriately adjusted according to the operating conditions, and the rotor sheets are taken as units and can be formed by general equipment, so that the dimensions of the rotor structure 10 and the screw vacuum pump disclosed in the present application are not exclusive and can be changed according to the process requirements. Further disclosed is one of the dimensions that can meet the requirements:
the diameter of the outer circles of the driving rotor 1 and the driven rotor 2 of the embodiment is phi 500 mm;
the rotor center distance between the driving rotor 1 and the driven rotor 2 is 320 mm;
the working length of the rotor is 1440 mm;
the thickness of the driving rotor sheet 102 and the thickness of the driven rotor sheet 202 are both 30 mm;
the angle difference between the extension directions of the arc structures of the adjacent rotor sheets of the same rotor is 30 degrees;
the screw pitches of the driving rotor 1 and the driven rotor 2 are both 360 mm;
the rotating speed is 1450 r/min;
based on the structural parameters disclosed in the third embodiment, through tests, the inlet limit pressure of the screw vacuum pump is 7Pa, the pumping speed is 1760L/s, and the shaft power is 97 kW.
In the technical scheme, the claw-type screw rotor structure and the screw vacuum pump with the claw-type screw rotor structure have the following beneficial effects:
the rotor structure 10 of the invention adopts a plurality of rotor sheets which are mutually stacked and can be processed and molded by using general equipment, the processing precision of the rotor sheets with the sheet structure is high, the diameter of the rotor is not limited by processing equipment and processing capacity, the processing difficulty of a large screw is obviously reduced, and the production and the manufacture of a large screw vacuum pump become possible.
The rotor structure and the screw vacuum pump can meet the requirements of different operating conditions, so that the design and adjustment of the vacuum pump are easier and more flexible, and the applicability of the screw vacuum pump is obviously improved.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims (7)

1. Claw screw rotor structure, characterized in that, this rotor structure (10) includes:
two rotors adjacent to each other;
the adjacent rotors drive the gas to directionally flow through meshing;
the rotor has a rotor shaft, and a plurality of rotor sheets mounted on the rotor shaft;
a plurality of the rotor sheets are sequentially assembled on the rotor shaft;
the rotor sheet is formed with an engagement claw structure extending away from the rotor shaft;
the circumferential angle difference of adjacent rotor sheets of the same rotor is theta;
Figure FDA0002484995170000011
wherein b is the thickness of the rotor sheet;
p is the rotor pitch;
the rotor sheets of adjacent rotors are sequentially meshed to drive the directional flow of gas.
2. Claw screw rotor structure according to claim 1, characterized in that adjacent rotors are configured as a driving rotor (1) and a driven rotor (2), respectively;
the drive rotor (1) has a plurality of drive rotor segments (102) mounted on a drive rotor shaft (101);
the driven rotor (2) having a plurality of driven rotor segments (202) fitted on a driven rotor shaft (201);
the driving rotor sheets (102) of the driving rotor (1) are sequentially meshed with the driven rotor sheets (201) of the driven rotor (2) to drive the gas to flow directionally;
the driving rotor (1) and the driven rotor (2) are driven by a synchronous gear to form synchronous rotation;
the rotation direction of the driving rotor (1) is opposite to that of the driven rotor (2).
3. The claw screw rotor structure according to claim 2, wherein the driving rotor sheet (102) comprises:
a drive rotor assembly (10201) and a drive rotor engagement claw projecting from the drive rotor assembly (10201) and extending along an arcuate path;
the driving rotor assembly (10201) has a first shaft hole (10204);
the driving rotor sheet (102) is fitted to the driving rotor shaft (101) through the first shaft hole (10204);
the driven rotor sheet (202) includes:
a driven rotor assembly (20201) and a driven rotor engaging claw projecting from the driven rotor assembly (20201) and extending along an arc-shaped locus;
the driven rotor assembly (20201) has a second shaft hole (20204);
the driven rotor sheet (202) is fitted to the driven rotor shaft (201) through the second shaft hole (20204);
the extension direction of the arc-shaped track of the driving rotor meshing claw is opposite to that of the arc-shaped track of the driven rotor meshing claw, and the driving rotor meshing claw is meshed with the driven rotor meshing claw to drive gas to flow directionally.
4. A claw screw rotor structure according to claim 3, characterized in that the arc-shaped face of the driving rotor engagement claw is configured as a driving rotor profile (10202) and the end of the driving rotor engagement claw remote from the end of the driving rotor assembly (10201) is configured as a driving rotor nose (10203);
the arc-shaped surface of the driven rotor engaging claw is configured as a driven rotor profile surface (20202), and the end of the driven rotor engaging claw far away from one end of the driven rotor assembly (20201) is configured as a driven rotor rear claw (20203);
the driving rotor profile (10202) and the driven rotor profile (20202) extend in opposite directions;
the driving rotor front claw (10203) is meshed and moves along the driven rotor profile surface (20202) to form a first sealing pair;
the driven rotor rear claw (20203) is meshed and moves along the driving rotor profile surface (10202) to form a second sealing pair;
the formation and movement of the first sealing pair and the second sealing pair are used for driving the gas to flow directionally.
5. A claw screw rotor structure according to claim 3 or 4, wherein the engaging claws of each rotor plate on the same rotor shaft are arranged along a spiral line, and the engaging claws of the rotor plates form a spiral rotor structure after the rotor plates are stacked.
6. Screw vacuum pump comprising a pump body (3), characterized in that a claw screw rotor structure (10) according to any one of claims 1 to 5 is integrated in the pump body (3).
7. Screw vacuum pump according to claim 6, characterized in that the pump body (3) comprises a first and a second pump body of one-piece construction;
the first pump body is formed with a first rotor cavity (301);
the second pump body is formed with a second rotor cavity (302);
the first rotor cavity (301) and the second rotor cavity (302) are communicated and partially overlapped;
the driving rotor (1) is embedded in the first rotor cavity (301);
the driven rotor (2) is embedded in the second rotor cavity (302).
CN202010388962.4A 2020-05-09 2020-05-09 Claw type screw rotor structure and screw vacuum pump Pending CN111425397A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010388962.4A CN111425397A (en) 2020-05-09 2020-05-09 Claw type screw rotor structure and screw vacuum pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010388962.4A CN111425397A (en) 2020-05-09 2020-05-09 Claw type screw rotor structure and screw vacuum pump

Publications (1)

Publication Number Publication Date
CN111425397A true CN111425397A (en) 2020-07-17

Family

ID=71555298

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010388962.4A Pending CN111425397A (en) 2020-05-09 2020-05-09 Claw type screw rotor structure and screw vacuum pump

Country Status (1)

Country Link
CN (1) CN111425397A (en)

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Effective date of registration: 20230119

Address after: No. 10, Business Room, No. G4, China Fortune Ceramic City, Beijing Road, Zibo Economic Development Zone, Shandong Province, 255000

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Applicant before: Shandong Bozhong Vacuum Technology Co.,Ltd.