CN112610474A - Conical rotor double-screw pump with bilateral exhaust - Google Patents
Conical rotor double-screw pump with bilateral exhaust Download PDFInfo
- Publication number
- CN112610474A CN112610474A CN202011524813.2A CN202011524813A CN112610474A CN 112610474 A CN112610474 A CN 112610474A CN 202011524813 A CN202011524813 A CN 202011524813A CN 112610474 A CN112610474 A CN 112610474A
- Authority
- CN
- China
- Prior art keywords
- screw rotor
- pump body
- rotor
- main
- pump
- 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
Links
- 230000002146 bilateral effect Effects 0.000 title description 2
- 239000007788 liquid Substances 0.000 claims abstract description 34
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims 1
- 230000006835 compression Effects 0.000 abstract description 4
- 238000007906 compression Methods 0.000 abstract description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000011550 stock solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- 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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps 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
- F04C2/16—Rotary-piston machines or pumps 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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
-
- 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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
The utility model provides a two side exhaust toper rotor double screw pumps, which comprises a pump body, main screw rotor and vice screw rotor, the pump body is the cylindricality pump body, the pump chamber internal diameter of the pump body reduces from middle to both ends internal diameter gradually, the inlet has been seted up respectively to the middle relative both sides of the pump body, the liquid outlet has been seted up respectively to the centre at pump body both ends, main screw rotor wears to establish between the pump body both ends with vice screw rotor is parallel, two screw rotor's axis is parallel with the central axis of the pump body, it is main, the profile curve intermeshing of vice screw forms sealed chamber, main screw rotor and vice screw rotor's centre correspond pump body inlet space between be the low pressure chamber. The volume of the screw rotor is in an annular space between the addendum circle and the dedendum circle, and along with the reduction of the addendum circle and the increase of the dedendum circle, the storage volume of each stage of the conical rotor is rapidly reduced from the middle to two ends along the axial direction, so that a large internal compression ratio can be realized in a short axial distance, and the requirements of conveying high-pressure and large-flow liquid can be met.
Description
Technical Field
The invention relates to a screw pump, in particular to a conical rotor double-screw pump with double-side exhaust.
Background
At present, screw pumps have been successfully applied to numerous industrial fields such as semiconductors, medicines, foods, chemical industry and the like, the share of vacuum pumps in the market is increased year by year, however, screw vacuum pump products which can be provided in China mainly flow to low-end markets, foreign screw pump products dominate domestic markets, the design and manufacture of screw rotors are one of the most critical technologies in screw vacuum pumps, the screw rotors are the most critical air extraction parts in screw vacuum pumps, the working performance and the service life of the pumps are directly determined, screw pumps capable of conveying high-pressure and large-flow liquid are needed in many engineering technical fields, and the traditional double-screw pumps cannot meet the requirements in engineering.
Disclosure of Invention
The invention provides a conical rotor double-screw pump capable of realizing double-side exhaust, which can rapidly reduce the gas storage volume in a short distance and realize a large internal compression ratio to solve the problems.
The technical scheme adopted by the invention is as follows:
a conical rotor double-screw pump with double-side exhaust comprises a pump body, a main screw rotor and an auxiliary screw rotor, wherein the pump body is a cylindrical pump body, the inner diameter of a pump cavity of the pump body is gradually reduced from the middle to the inner diameters of two ends, liquid inlets are respectively formed in two opposite sides in the middle of the pump body, liquid outlets are respectively formed in the middles of the two ends of the pump body, the main screw rotor and the auxiliary screw rotor are arranged between the two ends of the pump body in a penetrating mode, the axes of the two screw rotors are parallel to the central axis of the pump body, tooth profile curves of the main screw and the auxiliary screw are meshed with each other to form a sealed cavity, a gap between the middle of the main screw rotor and the middle of the auxiliary screw rotor and corresponding to the liquid inlets of the pump body is a low-pressure cavity, gaps between the two ends of the main screw rotor and the two ends of the auxiliary screw rotor and corresponding to the liquid, meanwhile, the outer diameters of the tooth root circles of the main screw rotor and the auxiliary screw rotor are linearly increased from the middle low-pressure cavity to the high-pressure cavities at the two ends.
The linear increasing proportion of the outer diameters of the root circles of the main screw rotor and the auxiliary screw rotor is in reciprocal relation with the linear decreasing proportion of the outer diameters of the tooth tops of the main screw rotor and the auxiliary screw rotor.
The pump body inlet have a liquid inlet pipe through inlet flange connection, the pump body liquid outlet have a liquid outlet pipe through outlet flange connection.
The two ends of the main screw rotor and the auxiliary screw rotor are movably connected with the pump body through bearings.
The invention has the beneficial effects that: the volume of the screw rotor is in an annular space between the addendum circle and the dedendum circle, and along with the reduction of the addendum circle and the increase of the dedendum circle, the storage volume of each stage of the conical rotor is rapidly reduced from the middle to two ends along the axial direction, so that a large internal compression ratio can be realized in a short axial distance, and the requirements of conveying high-pressure and large-flow liquid can be met.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Wherein: 1-a pump body; 2-main screw rotor; 3-a low pressure chamber; 4-liquid inlet; 5-a liquid inlet pipe; 6-inlet flange; 7-high pressure chamber; 8-a liquid outlet; 9-an outlet flange; 10-a liquid outlet pipe; 11-auxiliary screw rotor; 12-tooth top; 13-tooth root.
Detailed Description
A conical rotor double-screw pump with double-side exhaust comprises a pump body 1, a main screw rotor 2 and an auxiliary screw rotor 11, wherein the pump body 1 is a cylindrical cavity, the inner diameter of a pump cavity of the pump body 1 is gradually reduced from the middle to the inner diameters of two ends, two opposite sides in the middle of the pump body 1 are respectively provided with a liquid inlet 4, the middle of two ends of the pump body 1 is respectively provided with a liquid outlet 8, the main screw rotor 2 and the auxiliary screw rotor 11 are arranged between two ends of the pump body 1 in a penetrating way, the axes of two screws are parallel to the central axis of the pump body 1, tooth profile curves of the main screw rotor 2 and the auxiliary screw rotor 11 are mutually meshed to form a sealed cavity, a gap between the main screw rotor 2 and the auxiliary screw rotor 11 corresponding to the liquid inlet 4 of the pump body 1 is a low-pressure cavity 3, a gap between two ends of the main screw rotor 2 and the auxiliary screw rotor 11 corresponding to the liquid outlet 8 of, the outside diameters of the addendum 12 circles of the main screw rotor 2 and the sub screw rotor 11 are linearly decreased from the middle low pressure chamber 3 to the high pressure chambers 7 at both ends, and simultaneously, the outside diameters of the dedendum 13 circles of the main screw rotor 2 and the sub screw rotor 11 are linearly increased from the middle low pressure chamber 3 to the high pressure chambers 7 at both ends.
The linear increasing proportion of the circular outer diameters of the tooth roots 13 of the main screw rotor 2 and the auxiliary screw rotor 11 and the linear decreasing proportion of the circular outer diameters of the tooth crests 12 of the main screw rotor 2 and the auxiliary screw rotor 11 are in inverse relation.
The liquid inlet 4 of the pump body 1 is connected with a liquid inlet pipe 5 through an inlet flange 6, and the liquid outlet 8 of the pump body 1 is connected with a liquid outlet pipe 10 through an outlet flange 9.
The two ends of the main screw rotor 2 and the auxiliary screw rotor 11 are movably connected with the pump body 1 through bearings.
During the application, the profile curve intermeshing of main screw rotor 2 and vice screw rotor 11 forms the seal chamber, guarantee the leakproofness of screw pump, and thus carry liquid, be in the annular space between addendum 12 circle and the dedendum 13 circle during main screw rotor 2 and vice screw rotor 11's stock solution volume, along with main screw rotor 2 and vice screw rotor 11's rotation, liquid promotes to both ends, addendum 12 circle reduces, 13 circles of dedendum increase gradually, conical main screw rotor 2 and vice screw rotor 11's each grade stock solution volume is reduced by middle inlet 4 to liquid outlet 8 along the axial rapidly, thereby can realize very big internal compression ratio in short axial distance.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (4)
1. A conical rotor double-screw pump with double-side exhaust is characterized by comprising a pump body (1), a main screw rotor (2) and an auxiliary screw rotor (11), wherein the pump body (1) is a cylindrical cavity, the inner diameter of a pump cavity of the pump body (1) is gradually reduced from the middle to the inner diameters of two ends, liquid inlets (4) are respectively formed in two opposite sides of the middle of the pump body (1), liquid outlets (8) are respectively formed in the middles of the two ends of the pump body (1), the main screw rotor (2) and the auxiliary screw rotor (11) are arranged between the two ends of the pump body (1) in a penetrating mode, the axes of the two screws are parallel to the central axis of the pump body (1), tooth profile curves of the main screw rotor (2) and the auxiliary screw rotor (11) are mutually meshed to form a sealing cavity, and a gap between the main screw rotor (2) and the auxiliary screw rotor (11) corresponding to the liquid inlets, the gap between the two ends of the main screw rotor (2) and the auxiliary screw rotor (11) corresponding to the liquid outlet (8) of the pump body (1) is a high-pressure cavity (7), the main screw rotor (2) and the auxiliary screw rotor (11) are in the shape of symmetrical cones at two ends, the outer diameter of the tooth crest (12) circle of the main screw rotor (2) and the auxiliary screw rotor (11) is linearly reduced from the middle low-pressure cavity (3) to the high-pressure cavities (7) at two ends, and meanwhile, the outer diameter of the tooth root (13) circle of the main screw rotor (2) and the auxiliary screw rotor (11) is linearly increased from the middle low-pressure cavity (3) to the high-pressure cavities (7) at two ends.
2. The double-sided de-airing conical rotor twin-screw pump according to claim 1, characterized in that the linear increase ratio of the outside diameter of the tooth root (13) circle of the main screw rotor (2) and the sub screw rotor (11) is inverse to the linear decrease ratio of the outside diameter of the tooth tip (12) circle of the main screw rotor (2) and the sub screw rotor (11).
3. The double-side exhaust conical rotor double-screw pump according to claim 1, characterized in that a liquid inlet (4) of the pump body (1) is connected with a liquid inlet pipe (5) through an inlet flange (6), and a liquid outlet (8) of the pump body (1) is connected with a liquid outlet pipe (10) through an outlet flange (9).
4. The double-sided exhaust conical rotor twin-screw pump according to claim 1, characterized in that both ends of the main screw rotor (2) and the auxiliary screw rotor (11) are movably connected with the pump body (1) through bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011524813.2A CN112610474A (en) | 2020-12-22 | 2020-12-22 | Conical rotor double-screw pump with bilateral exhaust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011524813.2A CN112610474A (en) | 2020-12-22 | 2020-12-22 | Conical rotor double-screw pump with bilateral exhaust |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112610474A true CN112610474A (en) | 2021-04-06 |
Family
ID=75245169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011524813.2A Pending CN112610474A (en) | 2020-12-22 | 2020-12-22 | Conical rotor double-screw pump with bilateral exhaust |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112610474A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562457A (en) * | 2022-04-11 | 2022-05-31 | 浙江创为真空设备股份有限公司 | Equal-pitch variable-compression screw rotor |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5738505A (en) * | 1995-09-05 | 1998-04-14 | Nuovo Pignone S.P.A. | Perfected twin-screw pump, particularly suitable for the pumping of biphase fluids in a submerged environment |
| CN200940568Y (en) * | 2006-08-31 | 2007-08-29 | 华南理工大学 | Mixed transport double screw pump |
| CN201041152Y (en) * | 2007-04-29 | 2008-03-26 | 黄山工业泵制造有限公司 | Horizontal type double-suction double screw pump |
| CN201152255Y (en) * | 2007-11-29 | 2008-11-19 | 重庆大学 | Conical three screw-rod pump |
| CN205805908U (en) * | 2016-07-11 | 2016-12-14 | 中国石油大学(华东) | A kind of conical screw rotor and Twin-screw vacuum pump thereof |
| CN106438370A (en) * | 2016-12-07 | 2017-02-22 | 中国石油大学(华东) | Self-balancing variable-pitch cone-shaped screw rotor |
| CN206448946U (en) * | 2016-12-07 | 2017-08-29 | 中国石油大学(华东) | A kind of conical screw rotor of self-balancing |
| CN207583622U (en) * | 2017-12-20 | 2018-07-06 | 杭州电子科技大学 | A kind of full seal type Quimby pump and high-pressure balancing rotor |
| CN110821835A (en) * | 2019-12-24 | 2020-02-21 | 中国石油大学(华东) | Conical screw rotor of double-screw vacuum pump |
-
2020
- 2020-12-22 CN CN202011524813.2A patent/CN112610474A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5738505A (en) * | 1995-09-05 | 1998-04-14 | Nuovo Pignone S.P.A. | Perfected twin-screw pump, particularly suitable for the pumping of biphase fluids in a submerged environment |
| CN200940568Y (en) * | 2006-08-31 | 2007-08-29 | 华南理工大学 | Mixed transport double screw pump |
| CN201041152Y (en) * | 2007-04-29 | 2008-03-26 | 黄山工业泵制造有限公司 | Horizontal type double-suction double screw pump |
| CN201152255Y (en) * | 2007-11-29 | 2008-11-19 | 重庆大学 | Conical three screw-rod pump |
| CN205805908U (en) * | 2016-07-11 | 2016-12-14 | 中国石油大学(华东) | A kind of conical screw rotor and Twin-screw vacuum pump thereof |
| CN106438370A (en) * | 2016-12-07 | 2017-02-22 | 中国石油大学(华东) | Self-balancing variable-pitch cone-shaped screw rotor |
| CN206448946U (en) * | 2016-12-07 | 2017-08-29 | 中国石油大学(华东) | A kind of conical screw rotor of self-balancing |
| CN207583622U (en) * | 2017-12-20 | 2018-07-06 | 杭州电子科技大学 | A kind of full seal type Quimby pump and high-pressure balancing rotor |
| CN110821835A (en) * | 2019-12-24 | 2020-02-21 | 中国石油大学(华东) | Conical screw rotor of double-screw vacuum pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562457A (en) * | 2022-04-11 | 2022-05-31 | 浙江创为真空设备股份有限公司 | Equal-pitch variable-compression screw rotor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106194717B (en) | A kind of rubber screw rod molded lines of rotor suitable for spiral displacement pump | |
| CN104776027A (en) | Screw rotor profile line of strictly-sealed dry screw vacuum pump | |
| CN110821835A (en) | Conical screw rotor of double-screw vacuum pump | |
| CN103195716A (en) | Novel tooth-shaped screw type wire | |
| CN206957921U (en) | A kind of complete smooth screw rotor based on eccentric circle involute | |
| CN112610474A (en) | Conical rotor double-screw pump with bilateral exhaust | |
| CN113757121B (en) | Space internal meshing conical double-screw compressor rotor driven by intersecting shafts and compressor | |
| CN107084131A (en) | A kind of complete smooth screw rotor based on eccentric circle involute | |
| CN110439811B (en) | Rotor profile of double-screw compressor | |
| CN203223383U (en) | Screw rotor type line of strictly sealed dry type screw vacuum pump | |
| CN211623716U (en) | Conical screw rotor of double-screw vacuum pump | |
| CN216691451U (en) | Tooth profile curve of pair of male and female rotors, male and female rotors and screw compressor | |
| CN110005609B (en) | Smooth rotor profile of double-screw vacuum pump and design method thereof | |
| CN103912485A (en) | High-flow and low-pulsation gear pump with compact structure | |
| CN210889307U (en) | Screw molded line of four-screw pump | |
| CN2881160Y (en) | Rotary volume compressor | |
| CN108757439B (en) | Double-head full-smooth screw rotor of double-screw liquid pump and design method thereof | |
| CN112943608A (en) | Multistage large-traffic compressor | |
| CN203201803U (en) | Novel tooth-shaped screw mold line | |
| CN111622944A (en) | Rotor and stator of conical single-screw gas-liquid mixed delivery pump | |
| CN219388156U (en) | Roots type hydrogen circulating pump | |
| CN110863860A (en) | Cross-shaft conical double-screw expander | |
| CN216407159U (en) | Large three-section variable-pitch screw profile line structure | |
| CN110552879B (en) | Four-screw pump | |
| CN116221111A (en) | Roots-type hydrogen circulating pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210406 |