CN103410735B - There is the Double-stage rotary vane vacuum pump of single-stage function - Google Patents
There is the Double-stage rotary vane vacuum pump of single-stage function Download PDFInfo
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- CN103410735B CN103410735B CN201310362954.2A CN201310362954A CN103410735B CN 103410735 B CN103410735 B CN 103410735B CN 201310362954 A CN201310362954 A CN 201310362954A CN 103410735 B CN103410735 B CN 103410735B
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Abstract
nullThe invention discloses a kind of rotary-vane vaccum pump，Provide a kind of transformation simple，The speed of exhaust of Double-stage rotary vane vacuum pump can be significantly improved，Have the high speed of exhaust of single-stage pump and the Double-stage rotary vane vacuum pump with single-stage function of the condition of high vacuum degree advantage of two-stage pump concurrently，Solve the technical problem that the speed of exhaust and vacuum cannot be taken into account present in prior art，It includes support and is located at the motor of support side，The opposite side of support is provided with the twin-stage pump housing and fuel tank，It is external that fuel tank is located at two-stage pump，The twin-stage pump housing is communicated with the pre-stage air inlet mouth in backing pump pump chamber and auxiliary exhaust mouth，And it is communicated in rear class suction nozzle and the rear class air vent of rear class pump pump chamber，Pre-stage air inlet mouth、Rear class suction nozzle and support air inlet are connected in parallel in vacuum system by pipeline，And on the pipeline that pre-stage air inlet mouth is corresponding, it is provided with the second valve that can block backing pump pump chamber with vacuum system conducting，The pipeline that rear class suction nozzle is corresponding is provided with the first valve that can block rear class pump pump chamber with vacuum system conducting.
Description
Technical field
The present invention relates to a kind of rotary-vane vaccum pump, particularly relate to the Double-stage rotary vane vacuum pump with single-stage function that a kind of pumping speed is fast, vacuum is high.
Background technology
Vacuum pump is to utilize machinery, physics, chemically or physically chemistry etc. method produce in a certain closing space, improve and maintain the device of vacuum, it is widely used in medication chemistry, electronic technology, vacuum drying, the fields such as refrigeration, it is generally divided into reciprocating vacuum pump, rotary-vane vaccum pump and molecular pump etc., rotary-vane vaccum pump therein is the widest as backing pump range of application, it is divided into again single-stage rotary vane type vacuum pump and Double-stage rotary vane vacuum pump two kinds, Double-stage rotary vane vacuum pump is usually by front, rotor in two pump chambers of rear class and pump chamber, blade, air entry, air vents etc. form, wherein the vacuum of prime is higher than the vacuum of rear class, final vacuum can reach about 0.1Pa, advantage is that vacuum is high, but it is slow that its shortcoming is the speed of evacuation；And single-stage rotary vane type vacuum pump do not have prime and rear class point, it is that it is provided only with a pump chamber with the main distinction of Double-stage rotary vane vacuum pump, advantage is that the speed of evacuation is fast, but its shortcoming is that vacuum ratio is relatively low, and the final vacuum of large-scale single-stage rotary vane type vacuum pump also can only achieve about 7Pa.
Summary of the invention
The present invention mainly provides one and simply transforms on the basis of original Double-stage rotary vane vacuum pump, the speed of exhaust of Double-stage rotary vane vacuum pump can be significantly improved, make it have the Double-stage rotary vane vacuum pump with single-stage function of the condition of high vacuum degree advantage of the high speed of exhaust of single-stage pump and two-stage pump concurrently, solve the technical problem that the speed of exhaust and vacuum cannot be taken into account present in prior art.
nullThe above-mentioned technical problem of the present invention is mainly addressed by following technical proposals: a kind of Double-stage rotary vane vacuum pump with single-stage function，Including support and the motor being located at support side，The opposite side of support is provided with the twin-stage pump housing and fuel tank，It is external that fuel tank is located at two-stage pump，The twin-stage pump housing includes again backing pump pump chamber and rear class pump pump chamber，Backing pump rotor it is provided with in backing pump pump chamber，It is provided with rear class pump rotor in rear class pump pump chamber，One end of backing pump rotor is connected with rear class pump rotor in extending to rear class pump pump chamber，It is external and be connected with the output shaft of motor through support that the other end of backing pump rotor extends to two-stage pump，And on support, it is communicated with the support air inlet in backing pump pump chamber，The described twin-stage pump housing is communicated with the pre-stage air inlet mouth in backing pump pump chamber and auxiliary exhaust mouth，And it is communicated in rear class suction nozzle and the rear class air vent of rear class pump pump chamber，Pre-stage air inlet mouth、Rear class suction nozzle and support air inlet are connected in parallel in vacuum system by pipeline，And on the pipeline that pre-stage air inlet mouth is corresponding, it is provided with the second valve that can block backing pump pump chamber with vacuum system conducting，The pipeline that rear class suction nozzle is corresponding is provided with the first valve that can block rear class pump pump chamber with vacuum system conducting.When vacuum system is bled, it is first shut off the second valve, opens the first valve, the twin-stage pump housing is respectively by support air inlet and rear class suction nozzle air-breathing, backing pump pump chamber and rear class pump pump chamber are separate, i.e. front stage forms two single-stage pumps in parallel, now backing pump pump chamber passes through auxiliary exhaust mouth aerofluxus, and two single-stage pumps are bled simultaneously, and the speed of exhaust increases；When after the vacuum that vacuum system reaches certain, switch the first valve and the second valve, i.e. open the second valve, close the first valve, now backing pump pump chamber is vented to rear class pump pump chamber by pre-stage air inlet mouth, backing pump pump chamber and rear class pump pump chamber two-stage pump in series, and then make the vacuum of vacuum system improve further.
As preferably, described pipeline includes the rear class pipeline that the backing line docked with pre-stage air inlet mouth docks and the twin-stage pipeline docked with support air inlet with rear class suction nozzle, the other end of rear class pipeline connects in vacuum system, the other end of twin-stage pipeline connects on rear class pipeline, the other end of backing line is connected on rear class pipeline by intermediate duct, second valve is located in intermediate duct, and the first valve is located on rear class pipeline corresponding between twin-stage pipe interface with rear class suction nozzle.Pipeline segmentation is arranged, it is easy to lays and installs.
As more preferably, the backing line port docked with described pre-stage air inlet mouth stretches out and forms backing line horn mouth, the rear class line ports docked with rear class suction nozzle stretches out and forms rear class pipeline horn mouth, and backing line horn mouth and rear class pipeline horn mouth are detained respectively and covered on corresponding backing line port and rear class line ports and be fixed by clamp nut respectively.Backing line and rear class pipeline are connected with corresponding backing line port and rear class line ports by horn mouth respectively, and pipeline connects simple, good airproof performance.
As preferably, described first valve and the second valve are electromagnetic valve, and electromagnetic valve electrically connect automatic control system.By automatic controlling system electromagnetic valve switch, making pipeline connect can change automatically.
As preferably, described pre-stage air inlet mouth, auxiliary exhaust mouth, rear class suction nozzle and rear class air vent are located on the end face of the twin-stage pump housing, elastic exhaust valve plate it is respectively equipped with on two-stage pump surface corresponding outside auxiliary exhaust mouth and rear class air vent, one end of elastic exhaust valve plate is fixed on the twin-stage pump housing, other end concora crush is on corresponding auxiliary exhaust mouth and rear class air vent, and elastic exhaust valve plate infiltrates under the oil level of fuel tank.The end face of the twin-stage pump housing is located at by pre-stage air inlet mouth, auxiliary exhaust mouth, rear class suction nozzle and rear class air vent, it is simple to pipeline is laid and installed and gas, oil circuit laying and processing in the pump housing.
As preferably, the described twin-stage pump housing includes prime stator, rear class stator and the rear end cap being coaxially disposed, one end of prime stator is fixed on support, and the other end encloses backing pump pump chamber jointly with one end of rear class stator, and the other end of rear class stator and rear end cap enclose rear class pump pump chamber jointly.One end of rear class stator and prime stator enclose backing pump pump chamber, opposite side and rear end cap enclose rear class pump pump chamber, the i.e. two ends of rear class stator process respectively and constitute the some of forward and backward level pump pump chamber cavity, without arranging mesospore part, simplify pump body structure, cost-effective, and improve the sealing of the pump housing.
Therefore, the Double-stage rotary vane vacuum pump with single-stage function of the present invention has an advantage that the conversion that Double-stage rotary vane vacuum pump is connected by air inlet pipeline, single-stage pump function is realized during two pump chamber parallel connections, the speed of exhaust is improved when the vacuum system starting stage, two-stage pump function is realized during two pump chamber series connection, further raising for vacuum system vacuum, air inlet pipeline is automatically switched by electromagnetic valve, have the high speed of exhaust of single-stage pump and the two-fold advantage of the condition of high vacuum degree of two-stage pump concurrently, simply transform on the basis of original Double-stage rotary vane vacuum pump, improvement cost is low.
Accompanying drawing illustrates:
Fig. 1 is the axonometric chart that the present invention has the Double-stage rotary vane vacuum pump of single-stage function；
Fig. 2 is the explosive view of the present invention.
Detailed description of the invention:
Below by embodiment, and combine accompanying drawing, technical scheme is described in further detail.
Embodiment:
nullAs shown in Figure 1，A kind of Double-stage rotary vane vacuum pump with single-stage function of the present invention，Including support 1 be arranged on the motor 2 on the left of support 1，The right side of support 1 and motor 2 are co-axially mounted a twin-stage pump housing 3，The fuel tank 4 of the twin-stage pump housing 3 outer button one aluminum matter of cover，As shown in Figure 2，The twin-stage pump housing 3 includes the prime stator 36 being coaxially disposed、Rear class stator 37 and rear end cap 38，The left end of prime stator 36 is fixed on support 1 right flank，The right-hand member of prime stator 36 encloses backing pump pump chamber 32 jointly with the left end of rear class stator 37，The right-hand member of rear class stator 37 and rear end cap 38 enclose rear class pump pump chamber 33 jointly，One backing pump rotor 34 of installation eccentric in backing pump pump chamber 32，One rear class pump rotor 35 of installation eccentric in rear class pump pump chamber 33，The right-hand member of backing pump rotor 34 is coaxially connected with rear class pump rotor 35 in extending to rear class pump pump chamber 33，The left end of backing pump rotor 34 extends to coaxially be connected with the output shaft of motor 2 outside the twin-stage pump housing 3 and through support 1，The end face of support 1 has a support air inlet 15 being communicated in backing pump pump chamber 32，The end face of prime stator 36 has a pre-stage air inlet mouth 5 being communicated in backing pump pump chamber 32 and auxiliary exhaust mouth 6，The end face of rear class stator 37 has a rear class suction nozzle 7 being communicated in rear class pump pump chamber 33 and rear class air vent 8，Pre-stage air inlet mouth 5、Rear class suction nozzle 7 and support air inlet 15 are connected in parallel in vacuum system 10 by pipeline，Pipeline therein includes the backing line 91 docked with pre-stage air inlet mouth 5、The rear class pipeline 92 docked with rear class suction nozzle 7 and the twin-stage pipeline 96 docked with support air inlet 15，The other end of rear class pipeline 92 connects in vacuum system 10，The other end of twin-stage pipeline 96 connects on rear class pipeline 92，The other end of backing line 91 is connected on rear class pipeline 92 by intermediate duct 93，Intermediate duct 93 is connected second valve 11，The rear class pipeline 92 that twin-stage pipeline 96 interface is corresponding with between rear class suction nozzle 7 is connected first valve 12，First valve 12 and the second valve 11 are electromagnetic valve，Electromagnetic valve electrically connect automatic control system，Thus rear class pump pump chamber 33 and the conducting of vacuum system 9 can be blocked and the conducting of backing pump pump chamber 32 and vacuum system 10 can be blocked，Backing line 91 port wherein docked with pre-stage air inlet mouth 5 stretches out and forms backing line horn mouth 94，Rear class pipeline 92 port docked with rear class suction nozzle 7 stretches out and forms rear class pipeline horn mouth 95，Backing line horn mouth 94 and rear class pipeline horn mouth 95 are detained respectively and are covered on corresponding backing line 91 port and rear class pipeline 92 port and be fixed by clamp nut 13，To guarantee the sealing of junction.It is respectively provided with an elastic exhaust valve plate 14 on auxiliary exhaust mouth 6 and outer corresponding prime stator 36 end face of rear class air vent 8 and on rear class stator 37 end face, one end of elastic exhaust valve plate 14 is fixed by screws on prime stator 36 and the rear class stator 37 of correspondence, other end concora crush is on corresponding auxiliary exhaust mouth 6 and rear class air vent 8, and elastic exhaust valve plate 14 infiltrates under the oil level of fuel tank 4.
When starting vacuum system 9 is bled, automatic control system is closed the second valve 11, is opened the first valve 12 simultaneously, backing pump pump chamber 32 passes through rear class suction nozzle 7 air-breathing simultaneously by support air inlet 15, rear class pump pump chamber 33, i.e. form two single-stage pumps in parallel, now backing pump pump chamber 32 is increased by auxiliary exhaust mouth 6 aerofluxus, the speed of exhaust；When the vacuum of vacuum system 9 reaches setting value (final vacuum of single-stage pump), automatic control system automatically switches the first valve 12 and the second valve 11, i.e. open the second valve 11, close the first valve 12, now backing pump pump chamber 32 is vented to rear class pump pump chamber 33 by pre-stage air inlet mouth 5, backing pump pump chamber 32 and rear class pump pump chamber 33 two-stage pump in series, and then make the vacuum of vacuum system 9 improve the final vacuum to two-stage pump further.
Specific embodiment described herein is only the design explanation for example to the present invention.Described specific embodiment can be made various amendment or supplements or use similar mode to substitute by those skilled in the art, but without departing from the spirit of the present invention or surmount scope defined in appended claims.
Claims (3)
- null1. a Double-stage rotary vane vacuum pump with single-stage function，Including support (1) and the motor (2) of being located at support (1) side，The opposite side of support (1) is provided with the twin-stage pump housing (3) and fuel tank (4)，Fuel tank (4) is located at the twin-stage pump housing (3) outward，The twin-stage pump housing (3) includes again backing pump pump chamber (32) and rear class pump pump chamber (33)，Backing pump rotor (34) it is provided with in backing pump pump chamber (32)，Rear class pump rotor (35) it is provided with in rear class pump pump chamber (33)，One end of backing pump rotor (34) is connected with rear class pump rotor (35) in extending to rear class pump pump chamber (33)，The other end of backing pump rotor (34) extends to the twin-stage pump housing (3) and outward and is connected with the output shaft of motor (2) through support (1)，And on support (1), it is communicated with the support air inlet (15) in backing pump pump chamber (32)，It is characterized in that: on the described twin-stage pump housing (3), be communicated with the pre-stage air inlet mouth (5) in backing pump pump chamber (32) and auxiliary exhaust mouth (6)，And it is communicated in rear class suction nozzle (7) and the rear class air vent (8) of rear class pump pump chamber (33)，Pre-stage air inlet mouth (5)、Rear class suction nozzle (7) and support air inlet (15) are connected in parallel in vacuum system (10) by pipeline，And be provided with on the pipeline that pre-stage air inlet mouth (5) is corresponding and can block the second valve (11) that backing pump pump chamber (32) turns on vacuum system (10)，The pipeline that rear class suction nozzle (7) is corresponding is provided with and can block the first valve (12) that rear class pump pump chamber (33) turns on vacuum system (9)；Described pipeline includes the backing line (91) docked with pre-stage air inlet mouth (5), the rear class pipeline (92) docked with rear class suction nozzle (7) and the twin-stage pipeline (96) docked with support air inlet (15), the other end of rear class pipeline (92) connects in vacuum system (10), the other end of twin-stage pipeline (96) connects on rear class pipeline (92), the other end of backing line (91) is connected on rear class pipeline (92) by intermediate duct (93), second valve (11) is located in intermediate duct (93), first valve (12) is located on rear class pipeline (92) corresponding between twin-stage pipeline (96) interface with rear class suction nozzle (7)；Described pre-stage air inlet mouth (5), auxiliary exhaust mouth (6), rear class suction nozzle (7) and rear class air vent (8) are located on the end face of the twin-stage pump housing (3), the twin-stage pump housing (3) surface that auxiliary exhaust mouth (6) is corresponding with rear class air vent (8) outside is respectively equipped with elastic exhaust valve plate (14), one end of elastic exhaust valve plate (14) is fixed on the twin-stage pump housing (3), other end concora crush is on corresponding auxiliary exhaust mouth (6) and rear class air vent (8), and elastic exhaust valve plate (14) infiltrates under the oil level of fuel tank (4)；Described first valve (12) and the second valve (11) are electromagnetic valve, and electromagnetic valve electrically connect automatic control system.
- The Double-stage rotary vane vacuum pump with single-stage function the most according to claim 1, it is characterized in that: backing line (91) port docked with described pre-stage air inlet mouth (5) stretches out and forms backing line horn mouth (94), rear class pipeline (92) port docked with rear class suction nozzle (7) stretches out and forms rear class pipeline horn mouth (95), and backing line horn mouth (94) and rear class pipeline horn mouth (95) are detained respectively to cover on and be fixed on corresponding backing line (91) port and rear class pipeline (92) port and respectively by clamp nut (13).
- The Double-stage rotary vane vacuum pump with single-stage function the most according to claim 1 and 2, it is characterized in that: the described twin-stage pump housing (3) includes prime stator (36), rear class stator (37) and the rear end cap (38) being coaxially disposed, one end of prime stator (36) is fixed on support (1), the other end encloses backing pump pump chamber (32) jointly with one end of rear class stator (37), and the other end of rear class stator (37) and rear end cap (38) enclose rear class pump pump chamber (33) jointly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310362954.2A CN103410735B (en) | 2013-08-20 | 2013-08-20 | There is the Double-stage rotary vane vacuum pump of single-stage function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310362954.2A CN103410735B (en) | 2013-08-20 | 2013-08-20 | There is the Double-stage rotary vane vacuum pump of single-stage function |
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| Publication Number | Publication Date |
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| CN103410735A CN103410735A (en) | 2013-11-27 |
| CN103410735B true CN103410735B (en) | 2016-09-21 |
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| CN201310362954.2A Active CN103410735B (en) | 2013-08-20 | 2013-08-20 | There is the Double-stage rotary vane vacuum pump of single-stage function |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108533494B (en) * | 2018-06-19 | 2024-02-20 | 浙江维朋制冷设备有限公司 | Vacuum pump |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3837764A (en) * | 1972-05-11 | 1974-09-24 | Robinair Mfg Corp | Multi-stage rotary vacuum pump with separate oil reservoir |
| JPS61123777A (en) * | 1984-11-16 | 1986-06-11 | Hitachi Ltd | Vacuum pump |
| DE4243793A1 (en) * | 1992-12-23 | 1994-06-30 | Zwetko Zwetkow | Stage lubrication for multistage vacuum pumps |
| CN2509423Y (en) * | 2001-11-16 | 2002-09-04 | 倪岩友 | Steel & plastic composite pipeline connecting element |
| CN2695684Y (en) * | 2004-03-16 | 2005-04-27 | 庄乾云 | Unit contraction rotary-vane vacuum pump |
| CN201141485Y (en) * | 2007-12-07 | 2008-10-29 | 荆州恒隆汽车零部件制造有限公司 | High pressure oil pipe line structure of direction converter |
| CN201487425U (en) * | 2008-09-23 | 2010-05-26 | 徐盛根 | High and middle pressure gas liquid pipeline |
| CN202756248U (en) * | 2012-06-18 | 2013-02-27 | 浙江飞越机电有限公司 | Secondary oil return preventing structure of rotary-vane vacuum pump |
| CN102889213B (en) * | 2012-09-28 | 2015-06-24 | 浙江飞越机电有限公司 | External oil cooling structure of rotary-vane vacuum pump |
| CN203420889U (en) * | 2013-08-20 | 2014-02-05 | 浙江飞越机电有限公司 | Double-stage rotary-vane vacuum pump with single-stage function |
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- 2013-08-20 CN CN201310362954.2A patent/CN103410735B/en active Active
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