CN112177927A - Roots vacuum pump - Google Patents
Roots vacuum pump Download PDFInfo
- Publication number
- CN112177927A CN112177927A CN202011130732.4A CN202011130732A CN112177927A CN 112177927 A CN112177927 A CN 112177927A CN 202011130732 A CN202011130732 A CN 202011130732A CN 112177927 A CN112177927 A CN 112177927A
- Authority
- CN
- China
- Prior art keywords
- air inlet
- pump body
- air
- inlet pipe
- 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.)
- Withdrawn
Links
- 238000010521 absorption reaction Methods 0.000 claims abstract description 11
- 238000001914 filtration Methods 0.000 claims description 19
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 229920000742 Cotton Polymers 0.000 claims description 4
- 230000030279 gene silencing Effects 0.000 claims description 2
- 230000002337 anti-port Effects 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000605 extraction Methods 0.000 abstract description 2
- 238000012856 packing Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/126—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 from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
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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
- 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses a Roots vacuum pump, which comprises a pump body, wherein two groups of rotors which synchronously and reversely rotate are arranged in the pump body, an air inlet pipe and an exhaust pipe are respectively arranged at the left side and the right side of the pump body, an air inlet accelerating impeller is arranged in the air inlet pipe, a wheel shaft of the air inlet accelerating impeller penetrates through the front side wall of the air inlet pipe and is provided with a driven wheel, wherein the shaft end of the rotor which clockwise rotates penetrates through the front side wall of the pump body and is provided with a driving wheel; the upper half part and the lower half part of the pump body are symmetrically provided with a U-shaped cover body, the inner wall of the U-shaped cover body is provided with a fin group, the middle part of the periphery of the U-shaped cover body is provided with a U-shaped heat absorption cavity in a bulging mode, the middle part of the U-shaped cover body is provided with a plurality of air vents communicated with the inner cavity of the U-shaped heat absorption cavity, the air vents are communicated with an air flow channel, and the U-shaped heat. The invention has novel structure, improves the air extraction effect of the vacuum pump, and can radiate the pump body.
Description
Technical Field
The invention relates to the technical field of vacuum pumps, in particular to a roots vacuum pump.
Background
The Roots vacuum pump is a double-rotor positive displacement vacuum pump, two rotors rotate at high speed in opposite directions, the space formed by the two rotors and a pump body is constantly changed to suck and discharge gas, and the rotors are in clearance fit with each other and the rotors and the pump body are in clearance fit with each other.
When the gas that contains dust is being taken out to roots vacuum pump, in order to prevent roots vacuum pump's inside entering dust, need set up gas filtration device at its inlet pipe end, but because of having set up gas filtration device, pass through to gaseous playing the barrier effect, make gaseous speed of passing through slow, consequently, lead to the efficiency of breathing in of its inlet pipe end to reduce, the gaseous volume of its outlet pipe end discharge also reduces in single time quantum, consequently, lead to roots vacuum pump's the inefficiency of bleeding, roots vacuum pump is when long-time during operation, its pump body can produce the heat, consequently, need dispel the heat to it.
Disclosure of Invention
The invention aims to provide a roots vacuum pump to solve the problems in the background technology.
In order to solve the technical problems, the invention adopts the technical scheme that:
a Roots vacuum pump comprises a pump body, wherein two groups of rotors which synchronously and reversely rotate are arranged in the pump body, the left side and the right side of the pump body are respectively provided with an air inlet pipe and an air outlet pipe, and the air inlet pipe is provided with an air filtering device;
an air inlet accelerating impeller is arranged in the air inlet pipe, a wheel shaft of the air inlet accelerating impeller penetrates through the front side wall of the air inlet pipe and is provided with a driven wheel, wherein the shaft end of the rotor rotating clockwise penetrates through the front side wall of the pump body and is provided with a driving wheel, and the driving wheel drives the driven wheel through a synchronous belt;
the pump comprises a pump body and is characterized in that a U-shaped cover body is symmetrically arranged on the upper half part and the lower half part of the pump body, a fin group formed by a plurality of radiating fins around a peripheral shell of the pump body is arranged on the inner wall of the U-shaped cover body, the radiating fins are connected with the peripheral shell of the pump body, an air flow channel is formed between every two adjacent radiating fins, a U-shaped heat absorption cavity is formed in the middle of the periphery of the U-shaped cover body in a protruding mode, the middle of the fin group corresponding to the U-shaped cover body is disconnected, a plurality of vent holes communicated with the inner cavity of the U-shaped heat absorption cavity are formed in the middle of the U-shaped cover body.
Further, gas filtering device includes air filter, fixing base, the air filter is vertical to run through the intake pipe lateral wall to inside vertical grafting income intake pipe, the one end that the air filter is located the intake pipe outside is equipped with the fixing base, the fixing base passes through bolt fixed connection intake pipe lateral wall, and is equipped with the rubber packing pad on the fixing base and the adjacent side of intake pipe.
Preferably, the gas filtering device is located at the right side of the intake accelerating impeller.
Furthermore, the outer wall of the exhaust pipe comprises silencing cotton.
Furthermore, the radiating fins are evenly distributed on the inner wall of the U-shaped cover body along the axial direction of the rotor.
The invention has the beneficial effects that:
the invention provides a Roots vacuum pump, when two sets of rotors in a pump body are driven to rotate in a synchronous reverse direction by an external motor, an air inlet pipe and an air outlet pipe can respectively perform air suction and air exhaust, the clockwise rotating rotors drive a driving wheel to rotate, the driving wheel drives a driven wheel to rotate through a synchronous belt, so that an air inlet accelerating impeller rotates, the air inlet accelerating impeller can push gas entering the air inlet pipe to generate thrust, the phenomenon that the gas passes slowly due to the filtering of the gas by a gas filtering device can be eliminated, the air suction efficiency of the air inlet pipe is improved, the air suction efficiency of the vacuum pump can be improved, in addition, when the air outlet pipe exhausts, the gas flow rate is high, and according to the principle that the higher the gas flow rate is, the lower the pressure is, air in an air flow channel can pass through an air vent, a U-shaped heat absorption cavity under, The air in the airflow channel flows to take away the heat on the pump body adsorbed by the radiating fins, so that the heat of the pump body is radiated;
the invention has novel structure, does not influence the air extraction effect of the vacuum pump while filtering the gas, and can radiate the heat of the pump body.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a front view of the present invention.
Fig. 2 is an enlarged view at a in fig. 1.
Fig. 3 is a schematic view of the U-shaped cover structure of the present invention.
In the figure: 1. the pump body, 2, the rotor, 3, the intake pipe, 4, the blast pipe, 5, the impeller is accelerated in admitting air, 6, follow driving wheel, 7, the action wheel, 8, the hold-in range, 9, the U-shaped cover body, 10, radiating fin, 11, U-shaped heat absorption chamber, 12, the blow vent, 13, the honeycomb duct, 14, the air filter, 15, fixing base, 16, rubber packing pad, 17, the amortization is cotton.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 3, the invention provides a roots vacuum pump, which comprises a pump body 1, wherein two sets of rotors 2 which synchronously and reversely rotate are arranged inside the pump body 1, the left side and the right side of the pump body 1 are respectively provided with an air inlet pipe 3 and an air outlet pipe 4, and the air inlet pipe 3 is provided with an air filtering device;
an air inlet accelerating impeller 5 is arranged in the air inlet pipe 3, a wheel shaft of the air inlet accelerating impeller 5 penetrates through the front side wall of the air inlet pipe 3 and is provided with a driven wheel 6, wherein the shaft end of the rotor 2 which rotates clockwise penetrates through the front side wall of the pump body 1 and is provided with a driving wheel 7, and the driving wheel 7 drives the driven wheel 6 through a synchronous belt 8;
the pump comprises a pump body 1 and is characterized in that a U-shaped cover body 9 is symmetrically arranged on the upper half part and the lower half part of the pump body 1, fin groups formed by a plurality of radiating fins 10 around the peripheral shell of the pump body 1 are arranged on the inner wall of the U-shaped cover body 9, the radiating fins 10 are connected with the peripheral shell of the pump body 1, an air flow channel is formed between the adjacent radiating fins 10, a U-shaped heat absorption cavity 11 is arranged in the middle of the periphery of the U-shaped cover body 9 in a protruding mode, the fin groups are disconnected corresponding to the middle of the U-shaped cover body 9, a plurality of air vents 12 communicated with the inner cavity of the U-shaped heat absorption cavity 11 are arranged in the middle of the U-shaped cover body 9, the air vents 12 are communicated.
In this embodiment, gas filtering device is located admit air the right side of accelerating impeller 5, gas filtering device includes air filter 14, fixing base 15, air filter 14 is vertical to run through 3 lateral walls in intake pipe to inside vertical grafting income intake pipe 3, the one end that air filter 14 is located the 3 outsides in intake pipe is equipped with fixing base 15, fixing base 15 passes through 3 lateral walls in bolt fixed connection intake pipe, and is equipped with rubber packing pad 16 on fixing base 15 and the side that intake pipe 3 is adjacent, through rubber packing pad 16, can strengthen the leakproofness of junction, through this structural design of gas filtering device, conveniently maintains and changes it.
In this embodiment, the outer wall of the exhaust pipe 4 includes sound-absorbing cotton 17, which can absorb the noise generated by the exhaust pipe 4 during exhaust, thereby reducing noise pollution.
In this embodiment, the heat dissipation fins 10 are uniformly distributed on the inner wall of the U-shaped cover 9 along the axial direction of the rotor 2.
According to the technical scheme of the invention, when two groups of rotors 2 in a pump body 1 are driven to synchronously and reversely rotate by an external motor, an air inlet pipe 3 and an air outlet pipe 4 can respectively perform air suction and air exhaust work, the rotors 2 rotating clockwise drive a driving wheel 7 to rotate, the driving wheel 7 drives a driven wheel 6 to rotate through a synchronous belt 8, so that an air inlet accelerating impeller 5 rotates, the air inlet accelerating impeller 5 can have the propelling effect on the air entering the air inlet pipe 3 to generate thrust on the air, the phenomenon that the air passes through slowly due to the filtration of an air filter plate 14 in an air filter device can be eliminated, the air suction efficiency of the air inlet pipe 3 is improved, and the air suction efficiency of a vacuum pump can be improved The U-shaped heat absorption cavity 11 and the guide pipe 13 enter the exhaust pipe 4, and the air in the air flow channel flows to take away the heat on the pump body 1 absorbed by the radiating fins, so that the heat dissipation of the pump body 1 is realized.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (5)
1. The utility model provides a roots vacuum pump, includes the pump body, the inside rotor that is equipped with two sets of synchronization and antiport of the pump body, the left and right sides of the pump body is equipped with intake pipe and blast pipe respectively, be equipped with gas filtering device, its characterized in that in the intake pipe:
an air inlet accelerating impeller is arranged in the air inlet pipe, a wheel shaft of the air inlet accelerating impeller penetrates through the front side wall of the air inlet pipe and is provided with a driven wheel, wherein the shaft end of the rotor rotating clockwise penetrates through the front side wall of the pump body and is provided with a driving wheel, and the driving wheel drives the driven wheel through a synchronous belt;
the pump comprises a pump body and is characterized in that a U-shaped cover body is symmetrically arranged on the upper half part and the lower half part of the pump body, a fin group formed by a plurality of radiating fins around a peripheral shell of the pump body is arranged on the inner wall of the U-shaped cover body, the radiating fins are connected with the peripheral shell of the pump body, an air flow channel is formed between every two adjacent radiating fins, a U-shaped heat absorption cavity is formed in the middle of the periphery of the U-shaped cover body in a protruding mode, the middle of the fin group corresponding to the U-shaped cover body is disconnected, a plurality of vent holes communicated with the inner cavity of the U-shaped heat absorption cavity are formed in the middle of the U-shaped cover body.
2. A roots vacuum pump as claimed in claim 1, wherein: the gas filtering device comprises an air filtering plate and a fixing seat, wherein the air filtering plate vertically penetrates through the side wall of the air inlet pipe and is vertically inserted into the air inlet pipe, one end, located outside the air inlet pipe, of the air filtering plate is provided with the fixing seat, the fixing seat is fixedly connected with the side wall of the air inlet pipe through a bolt, and a rubber sealing gasket is arranged on the side face, adjacent to the air inlet pipe, of the fixing seat.
3. A roots vacuum pump according to claim 1 or 2, wherein: the gas filtering device is positioned at the right side of the air inlet accelerating impeller.
4. A roots vacuum pump as claimed in claim 1, wherein: the outer wall of the exhaust pipe comprises silencing cotton.
5. A roots vacuum pump as claimed in claim 1, wherein: the radiating fins are evenly distributed on the inner wall of the U-shaped cover body along the axial direction of the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011130732.4A CN112177927A (en) | 2020-10-21 | 2020-10-21 | Roots vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011130732.4A CN112177927A (en) | 2020-10-21 | 2020-10-21 | Roots vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112177927A true CN112177927A (en) | 2021-01-05 |
Family
ID=73923152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011130732.4A Withdrawn CN112177927A (en) | 2020-10-21 | 2020-10-21 | Roots vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112177927A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309701A (en) * | 2021-07-09 | 2021-08-27 | 广德玉龙泵业有限公司 | Roots vacuum pump |
| CN116488365A (en) * | 2023-04-13 | 2023-07-25 | 北京通嘉宏瑞科技有限公司 | Stator, manufacturing method thereof and vacuum pump |
-
2020
- 2020-10-21 CN CN202011130732.4A patent/CN112177927A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309701A (en) * | 2021-07-09 | 2021-08-27 | 广德玉龙泵业有限公司 | Roots vacuum pump |
| CN113309701B (en) * | 2021-07-09 | 2023-12-26 | 广德玉龙泵业有限公司 | Roots vacuum pump |
| CN116488365A (en) * | 2023-04-13 | 2023-07-25 | 北京通嘉宏瑞科技有限公司 | Stator, manufacturing method thereof and vacuum pump |
| CN116488365B (en) * | 2023-04-13 | 2023-10-20 | 北京通嘉宏瑞科技有限公司 | Stator, manufacturing method thereof and vacuum pump |
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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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210105 |
|
| WW01 | Invention patent application withdrawn after publication |