CN2514145Y

CN2514145Y - Two-stage water-sealed vacuum pump

Info

Publication number: CN2514145Y
Application number: CN 01271206
Authority: CN
Inventors: 刘丁贵
Original assignee: Sunny King Machinery Co Ltd
Current assignee: Sunny King Machinery Co Ltd
Priority date: 2001-11-06
Filing date: 2001-11-06
Publication date: 2002-10-02
Anticipated expiration: 2011-11-06

Abstract

The utility model relates to a two-stage water seal type vacuum pump. Adjacent first and second rotational chambers are arranged in a shell, air inlets and air outlets are respectively arranged in the two rotational chambers, a driving shaft is eccentrically arranged between the two rotational chambers, vane wheels are respectively mounted on the corresponding driving shaft in the two rotational chambers, and a connecting pipe at the air outlet of the first rotational chamber is communicated with the air inlet of the second rotational chamber. A compartment plate compartments the first and the second rotational chambers which are arranged in the shell, so the volume is smaller, and the installation, the transportation and the use of the whole vaccum pump are more convenient; because the length of the driving shaft can be moderately shortened, the transmission efficiency is increased, and the deformation or the fatigue of the driving shaft can be avoided.

Description

The two-stage water seal type vacuum pump

Technical field

The utility model relates to a kind of vacuum pump, relates to a kind of two-stage water seal type vacuum pump specifically.

Background technique

Two-stage water seal type vacuum pump (TWO-STAGE VACUUM PUMP) development so far widely all trades and professions use, it mainly is that the rounded rotating room of a section (ROTOR CHAMBER) is set in casing, and off-centre wears assembling one line shaft in the rotating room, and be provided with impeller (ROTOR) in described line shaft with blade, in the rotating room, inject an amount of water (or the liquid that is suitable for) in addition, simultaneously suction port (INLET PORT) and air outlet (DISCHARGE PORT) are located at the ectocentral appropriate location of casing respectively, when line shaft drives the blade rotation as shown in Figure 4, line shaft 74 drives blade 740 and does the clockwise direction rotation, owing to making the water 72 in the rotating room 70, centrifugal action abuts on the wall of rotating room 70, and because line shaft 74 is to adopt eccentric the setting, so compressing of ccontaining water 72 in the space of 740 ccontaining air of each blade can be along with the rotation of line shaft 74 and rotating room 70 and changing, the suction port 76 and air outlet 78 that the appropriate location is provided with of arranging in pairs or groups again, can be successfully with air by suction port 76 suction, and after overcompression, discharge by air outlet 78, in Fig. 4, whole circulation has been divided into three phases, phase I is charging stage 7A, withdraw from laterally by the space of 740 in each blade at described stage water, and air is sucked in the space of 740 in each blade by suction port 76, in second stage is compression stage 7B, can clamp-on in the space of 740 in each blade at described stage water, and general's air compression wherein, phase III then is exhaust phase 7C, water can be filled with the space of 740 in each blade gradually in the described stage, and the air in the described space is discharged by air outlet 78, reach the effect that vacuumizes thus.

Aforesaid water seal vacuum pump is in order to improve the efficient that it vacuumizes, so develop the design that two-stage type, it promptly as shown in Figure 3, it comprises a main case 80 and a secondary casing 90, in main case 80, form a rotating room 82, one line shaft, 89 off-centre are arranged in the described rotating room 82, and the line shaft 89 in described rotating room 82 is provided with an impeller 88, be provided with suction port 84 and air outlet 86 in the rotating room 82 in casing 80 nearly centre again, described suction port 84 is conducted with suction tude 840, and air outlet 86 then is communicated to secondary casing 90 places with a connecting tube 860; Also form a rotating room 92 in the secondary casing 90, aforesaid line shaft 89 is arranged in described secondary casing 90 rotating rooms 92 by passing back off-centre in the main case 80, and the line shaft 89 in described rotating room 92 is provided with an impeller 98, be provided with suction port 94 and air outlet 96 in the rotating room 92 in casing 90 nearly centre again, described suction port 94 is conducted with aforementioned connecting tube 860, and air outlet 96 is then discharged air extraneous via a steam outlet pipe 960.

Desired practicability effect when aforesaid existing two-stage water seal type vacuum pump can reach design in the use really, but in practical operation, still exist some disappearances to need to improve:

Its main case 80 and secondary casing 90 generally with respectively independently mode be provided with, also be that they just are mounted to one when assembling, therefore be offset aligning easily of two axis holes, and can have influence on the assembling and the use of line shaft 89, line shaft 89 uses easily generation destruction of back.

2. its main case 80 is provided with secondary casing 90 is independent respectively, make its line shaft 89 must adopt long length specification, though can will need the less secondary casing 90 of power to be placed in the far-end of line shaft 89 in the general design, it all has adverse influence to the transmission of power and the load of line shaft 89.

3. because its main case 80 and the independent respectively setting of secondary casing 90, so it quite bothers when carrying and assembling, especially therebetween the assembling of line shaft 89 and connecting tube 860 more need test the experience and the technology of assembler, also is that described assembling process may have influence on the effect of in the future using.

By above explanation as can be known, existing this type of two-stage water seal type vacuum pump is obviously use up perfect on structural arrangements and the necessity that is improved is arranged; The utility model people is because the disappearance of existing product, is go up the not enough improvement of locating to be studied at its design, and be to have developed the utility model that has more progressive and practicability.

The model utility content

Main purpose of the present utility model is to provide a kind of whole two-stage water seal type vacuum pump that is provided with, and it can eliminate the adverse effect of the load of the transmission of power and line shaft and assembling is easy and convenient in carrying.

For achieving the above object, two-stage water seal type vacuum pump of the present utility model, be characterized in, in casing, be provided with first rotating room and second rotating room that are close to mutually, in described first rotating room, be provided with suction port and air outlet, in described second rotating room, be provided with suction port and air outlet, simultaneously off-centre runs through a line shaft is set between described two rotating rooms, and be assembled with first impeller on the described line shaft in first rotating room, be assembled with second impeller on the described line shaft in second rotating room, between the suction port of the air outlet of first rotating room and second rotating room, be connected in addition a connecting tube is set.

Adopt such scheme can provide a volume smaller and more exquisite and use water seal type vacuum pump more easily, and can eliminate easily and convenient in carrying the adverse effect of the load of the transmission of power and line shaft and assembling.Owing to first rotating room and second rotating room are arranged in the casing, make whole installation, transportation and use all more convenient; Transmission efficiency be can improve because the length appropriateness of line shaft is shortened and the distortion or the fatigue of line shaft avoided; In addition, the utility model significantly dwindles whole volume, and the user can be provided better selection.

Understand the purpose of this utility model, characteristics and advantage for clearer, preferred embodiment of the present utility model is elaborated below in conjunction with accompanying drawing.

Description of drawings

Fig. 1 is the pipeline configuration schematic diagram in the casing of the present utility model outside;

Fig. 2 is the cross-sectional view of the utility model one preferred embodiment;

Fig. 3 is existing two-stage water seal type vacuum pump cross-sectional view;

Fig. 4 is the action principle generalized section of water seal type vacuum pump.

Embodiment

See also shown in Figure 1, this figure is the pipeline configuration schematic diagram in the casing of the present utility model outside, wherein can see the utility model outside is the casing 10 of an integrity, be provided with the suction tude 17 that is communicated with suction port in casing 10 1 sides, side is provided with the steam outlet pipe 19 that is communicated with the air outlet in addition, and is assembled with a connecting tube 18 in casing 10 1 sides.

The utility model preferred embodiment cross-sectional view that cooperates Fig. 2, the utility model is to be provided with first rotating room 12 that is close to mutually in casing 10 as shown in the figure, second rotating room 14, in described first, two

rotating rooms

12,14 with a space bar 100 separately, and on described space bar 100, add seal arrangement 102, in described first rotating room 12, be provided with suction port 120 and air outlet 122, in described second rotating room 14, be provided with suction port 140 and air outlet 142, simultaneously in described two rotating

rooms

12,14 off-centre run through a line shaft 16 are set, and be assembled with first impeller 162 on the described line shaft 16 in first rotating room 12, be assembled with second impeller 164 on the described line shaft 16 in second rotating room 14, sentence suction port 140 places that a connecting tube 18 (being shown among Fig. 1) is communicated to second rotating room 14 in the air outlet 122 of first rotating room 12, whereby can be long-pending smaller and more exquisite and use water seal type vacuum pump more easily for one.

In Fig. 2, can see in suction port 120 outer ends of first rotating room 12 and extend a suction tude 17, it can be in order to connect external air pipe (not shown), extend a steam outlet pipe 19 in 14 outer ends, second rotating room, and can derive in order to the gas of will discharge in second rotating room 14.

Because technology and principle that water seal type vacuum pump is used belong to prior art, so do not add to give unnecessary details at this, be in eccentric position but in figure, can see the position that the utility model line shaft 16 wears with respect to first rotating room 12 that is close to mutually and second rotating room 14, so can allow first rotating room 12 of the present utility model and second rotating room 14 bring into play due pressurized gas effect.

By above explanation as can be known, the utility model is arranged on first rotating room 12 and second rotating room 14 in the casing 10, and with a space bar 100 separately, allows whole installation, transportation and use all more convenient therebetween; According to design of the present utility model, can allow the length appropriateness of line shaft 16 shorten, and can improve transmission efficiency again, also can avoid the distortion or the fatigue of line shaft 16; In addition, the utility model significantly dwindles whole volume, and the user can be provided a better selection.

Claims

1. two-stage water seal type vacuum pump, it is characterized in that, in casing, be provided with first rotating room and second rotating room that are close to mutually, in described first rotating room, be provided with suction port and air outlet, in described second rotating room, be provided with suction port and air outlet, simultaneously off-centre runs through a line shaft is set between described two rotating rooms, and be assembled with first impeller on the described line shaft in first rotating room, be assembled with second impeller on the described line shaft in second rotating room, between the suction port of the air outlet of first rotating room and second rotating room, be connected in addition a connecting tube is set.

2. two-stage water seal type vacuum pump as claimed in claim 1 is characterized in that, is provided with a space bar between first rotating room and second rotating room.

3. two-stage water seal type vacuum pump as claimed in claim 2 is characterized in that, adds seal arrangement on described space bar.